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- add (initial) R535 implementation of SEC2, needed for boot
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- (temporarily) disable if GSP-RM detected, will be added later
- provide empty class list for non-GSP paths
- split tu102 from gm107, it will provide host classes later
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- (temporarily) disable if GSP-RM detected, will be added later
- provide empty class list for non-GSP paths
- split tu102- from gm107, they will provide host classes later
- fixup HW engine instance masks
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- (temporarily) disable if GSP-RM detected, will be added later
- make init() optional
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- (temporarily) disable if GSP-RM detected, will be added later
- add dtor() so GSP-RM paths can cleanup properly
- add alternate engine context mapping interface for RM engines
- add alternate chid interfaces to handle RM USERD oddities
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- (temporarily) disable if GSP-RM detected, will be added later
- pass "suspend" flag down to chipset-specific DISP code
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- (temporarily) disable if GSP-RM detected, will be added later
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- add R535 implementation of VFN, minus interrupt table
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- disable TOP completely when GSP-RM detected
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- disable THERM completely when GSP-RM detected
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- disable PRIVRING completely when GSP-RM detected
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- disable PMU completely when GSP-RM detected
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- (temporarily) disable if GSP-RM detected, will be added later
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- disable MC completely when GSP-RM detected
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- disable LTC completely when GSP-RM detected
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- move suspend/resume paths to HW-specific code
- allow (future) RM paths to be based on nv50_instmem
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- disable I2C completely when GSP-RM detected
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- disable GPIO completely when GSP-RM detected
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- disable FUSE completely when GSP-RM detected
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- add (initial) R535 implementation of FB, need VRAM size etc for boot
- expose a way to "wrap" vram at a specific address/size as a standard
nvkm_memory allocation, which will be used to write PTEs etc for RM-
defined memory regions
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- disable FAULT completely when GSP-RM detected
- SVM support will be disabled when running on RM because of this
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- add R535 implementation of DEVINIT, we need some of this for boot
- add display disable fuse for ga100-
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- disable BUS completely when GSP-RM detected
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- (temporarily) disable if GSP-RM detected, will be added later
- move BAR2 teardown from dtor(), it doesn't belong there
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- disable ACR completely when GSP-RM detected
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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- move TOP after GSP, so we can disable TOP if GSP is in use
- provide plumbing to support falcon-only and GSP-RM paths
- provide a method for subdevs to detect GSP-RM paths
- split tu102/tu116/ga100 paths from gv100, which can't support GSP-RM
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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RM (and GH100) support 8 NVJPG instances.
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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RM (and GH100) support 8 NVDEC instances.
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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This was cargo-culted from traces of RM when the code was written, but
we probably shouldn't be touching NV_PFB regs while GSP-RM is running.
From traces, it looks like NVIDIA dropped this sometime between 510.54
and 515.48.07, so I guess we can too.
Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 core updates from Thomas Gleixner:
- Limit the hardcoded topology quirk for Hygon CPUs to those which have
a model ID less than 4.
The newer models have the topology CPUID leaf 0xB correctly
implemented and are not affected.
- Make SMT control more robust against enumeration failures
SMT control was added to allow controlling SMT at boottime or
runtime. The primary purpose was to provide a simple mechanism to
disable SMT in the light of speculation attack vectors.
It turned out that the code is sensible to enumeration failures and
worked only by chance for XEN/PV. XEN/PV has no real APIC enumeration
which means the primary thread mask is not set up correctly. By
chance a XEN/PV boot ends up with smp_num_siblings == 2, which makes
the hotplug control stay at its default value "enabled". So the mask
is never evaluated.
The ongoing rework of the topology evaluation caused XEN/PV to end up
with smp_num_siblings == 1, which sets the SMT control to "not
supported" and the empty primary thread mask causes the hotplug core
to deny the bringup of the APS.
Make the decision logic more robust and take 'not supported' and 'not
implemented' into account for the decision whether a CPU should be
booted or not.
- Fake primary thread mask for XEN/PV
Pretend that all XEN/PV vCPUs are primary threads, which makes the
usage of the primary thread mask valid on XEN/PV. That is consistent
with because all of the topology information on XEN/PV is fake or
even non-existent.
- Encapsulate topology information in cpuinfo_x86
Move the randomly scattered topology data into a separate data
structure for readability and as a preparatory step for the topology
evaluation overhaul.
- Consolidate APIC ID data type to u32
It's fixed width hardware data and not randomly u16, int, unsigned
long or whatever developers decided to use.
- Cure the abuse of cpuinfo for persisting logical IDs.
Per CPU cpuinfo is used to persist the logical package and die IDs.
That's really not the right place simply because cpuinfo is subject
to be reinitialized when a CPU goes through an offline/online cycle.
Use separate per CPU data for the persisting to enable the further
topology management rework. It will be removed once the new topology
management is in place.
- Provide a debug interface for inspecting topology information
Useful in general and extremly helpful for validating the topology
management rework in terms of correctness or "bug" compatibility.
* tag 'x86-core-2023-10-29-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
x86/apic, x86/hyperv: Use u32 in hv_snp_boot_ap() too
x86/cpu: Provide debug interface
x86/cpu/topology: Cure the abuse of cpuinfo for persisting logical ids
x86/apic: Use u32 for wakeup_secondary_cpu[_64]()
x86/apic: Use u32 for [gs]et_apic_id()
x86/apic: Use u32 for phys_pkg_id()
x86/apic: Use u32 for cpu_present_to_apicid()
x86/apic: Use u32 for check_apicid_used()
x86/apic: Use u32 for APIC IDs in global data
x86/apic: Use BAD_APICID consistently
x86/cpu: Move cpu_l[l2]c_id into topology info
x86/cpu: Move logical package and die IDs into topology info
x86/cpu: Remove pointless evaluation of x86_coreid_bits
x86/cpu: Move cu_id into topology info
x86/cpu: Move cpu_core_id into topology info
hwmon: (fam15h_power) Use topology_core_id()
scsi: lpfc: Use topology_core_id()
x86/cpu: Move cpu_die_id into topology info
x86/cpu: Move phys_proc_id into topology info
x86/cpu: Encapsulate topology information in cpuinfo_x86
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
"Updates for time, timekeeping and timers:
Core:
- Avoid superfluous deactivation of the tick in the low resolution
tick NOHZ interrupt handler as the deactivation is handled already
in the idle loop and on interrupt exit.
- Update stale comments in the tick NOHZ code and rename the tick
handler functions to be self-explanatory.
- Remove an unused function in the tick NOHZ code, which was
forgotten when the last user went away.
- Handle RTC alarms which exceed the maximum alarm time of the
underlying RTC hardware gracefully.
Setting RTC alarms which exceed the maximum alarm time of the RTC
hardware failed so far and caused suspend operations to abort.
Cure this by limiting the alarm to the maximum alarm time of the
RTC hardware, which is provided by the driver. This causes early
resume wakeups, but that's way better than not suspending at all.
Drivers:
- Add a proper clocksource/event driver for the ancient Cirrus Logic
EP93xx SoC family, which is one of the last non device-tree
holdouts in arch/arm.
- The usual boring device tree bindings updates and small fixes and
enhancements all over the place"
* tag 'timers-core-2023-10-29-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clocksource: ep93xx: Add driver for Cirrus Logic EP93xx
dt-bindings: timers: Add Cirrus EP93xx
clocksource/drivers/timer-atmel-tcb: Fix initialization on SAM9 hardware
clocksource/timer-riscv: ACPI: Add timer_cannot_wakeup_cpu
clocksource/drivers/sun5i: Remove surplus dev_err() when using platform_get_irq()
drivers/clocksource/timer-ti-dm: Don't call clk_get_rate() in stop function
clocksource/drivers/timer-imx-gpt: Fix potential memory leak
dt-bindings: timer: renesas,rz-mtu3: Document RZ/{G2UL,Five} SoCs
dt-bindings: timer: renesas,rz-mtu3: Improve documentation
dt-bindings: timer: renesas,rz-mtu3: Fix overflow/underflow interrupt names
alarmtimer: Use maximum alarm time for suspend
rtc: Add API function to return alarm time bound by hardware limit
tick/nohz: Update comments some more
tick/nohz: Remove unused tick_nohz_idle_stop_tick_protected()
tick/nohz: Don't shutdown the lowres tick from itself
tick/nohz: Update obsolete comments
tick/nohz: Rename the tick handlers to more self-explanatory names
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq updates from Thomas Gleixner:
"Core:
- Exclude managed interrupts in the calculation of interrupts which
are targeted to a CPU which is about to be offlined to ensure that
there are enough free vectors on the still online CPUs to migrate
them over.
Managed interrupts do not need to be accounted because they are
either shut down on offline or migrated to an already reserved and
guaranteed slot on a still online CPU in the interrupts affinity
mask.
Including managed interrupts is overaccounting and can result in
needlessly aborting hibernation on large server machines.
- The usual set of small improvements
Drivers:
- Make the generic interrupt chip implementation handle interrupt
domains correctly and initialize the name pointers correctly
- Add interrupt affinity setting support to the Renesas RZG2L chip
driver.
- Prevent registering syscore operations multiple times in the SiFive
PLIC chip driver.
- Update device tree handling in the NXP Layerscape MSI chip driver"
* tag 'irq-core-2023-10-29-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/sifive-plic: Fix syscore registration for multi-socket systems
irqchip/ls-scfg-msi: Use device_get_match_data()
genirq/generic_chip: Make irq_remove_generic_chip() irqdomain aware
genirq/matrix: Exclude managed interrupts in irq_matrix_allocated()
PCI/MSI: Provide stubs for IMS functions
irqchip/renesas-rzg2l: Enhance driver to support interrupt affinity setting
genirq/generic-chip: Fix the irq_chip name for /proc/interrupts
irqdomain: Annotate struct irq_domain with __counted_by
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https://gitlab.freedesktop.org/agd5f/linux into drm-next
amd-drm-next-6.7-2023-10-27:
amdgpu:
- RAS fixes
- Seamless boot fixes
- NBIO 7.7 fix
- SMU 14.0 fixes
- GC 11.5 fixes
- DML2 fixes
- ASPM fixes
- VPE fixes
- Misc code cleanups
- SRIOV fixes
- Add some missing copyright notices
- DCN 3.5 fixes
- FAMS fixes
- Backlight fix
- S/G display fix
- fdinfo cleanups
- EXT_COHERENT fixes for APU and NUMA systems
amdkfd:
- Misc fixes
- Misc code cleanups
- SVM fixes
Signed-off-by: Dave Airlie <[email protected]>
From: Alex Deucher <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mm handling updates from Ingo Molnar:
- Add new NX-stack self-test
- Improve NUMA partial-CFMWS handling
- Fix #VC handler bugs resulting in SEV-SNP boot failures
- Drop the 4MB memory size restriction on minimal NUMA nodes
- Reorganize headers a bit, in preparation to header dependency
reduction efforts
- Misc cleanups & fixes
* tag 'x86-mm-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm: Drop the 4 MB restriction on minimal NUMA node memory size
selftests/x86/lam: Zero out buffer for readlink()
x86/sev: Drop unneeded #include
x86/sev: Move sev_setup_arch() to mem_encrypt.c
x86/tdx: Replace deprecated strncpy() with strtomem_pad()
selftests/x86/mm: Add new test that userspace stack is in fact NX
x86/sev: Make boot_ghcb_page[] static
x86/boot: Move x86_cache_alignment initialization to correct spot
x86/sev-es: Set x86_virt_bits to the correct value straight away, instead of a two-phase approach
x86/sev-es: Allow copy_from_kernel_nofault() in earlier boot
x86_64: Show CR4.PSE on auxiliaries like on BSP
x86/iommu/docs: Update AMD IOMMU specification document URL
x86/sev/docs: Update document URL in amd-memory-encryption.rst
x86/mm: Move arch_memory_failure() and arch_is_platform_page() definitions from <asm/processor.h> to <asm/pgtable.h>
ACPI/NUMA: Apply SRAT proximity domain to entire CFMWS window
x86/numa: Introduce numa_fill_memblks()
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git://anongit.freedesktop.org/drm/drm-misc into drm-next
drm-misc-next for v6.7-rc1:
drm-misc-next-2023-10-19 + following:
UAPI Changes:
Cross-subsystem Changes:
- Convert fbdev drivers to use fbdev i/o mem helpers.
Core Changes:
- Use cross-references for macros in docs.
- Make drm_client_buffer_addb use addfb2.
- Add NV20 and NV30 YUV formats.
- Documentation updates for create_dumb ioctl.
- CI fixes.
- Allow variable number of run-queues in scheduler.
Driver Changes:
- Rename drm/ast constants.
- Make ili9882t its own driver.
- Assorted fixes in ivpu, vc4, bridge/synopsis, amdgpu.
- Add planar formats to rockchip.
Signed-off-by: Dave Airlie <[email protected]>
From: Maarten Lankhorst <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 boot updates from Ingo Molnar:
- Rework PE header generation, primarily to generate a modern, 4k
aligned kernel image view with narrower W^X permissions.
- Further refine init-lifetime annotations
- Misc cleanups & fixes
* tag 'x86-boot-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
x86/boot: efistub: Assign global boot_params variable
x86/boot: Rename conflicting 'boot_params' pointer to 'boot_params_ptr'
x86/head/64: Move the __head definition to <asm/init.h>
x86/head/64: Add missing __head annotation to startup_64_load_idt()
x86/head/64: Mark 'startup_gdt[]' and 'startup_gdt_descr' as __initdata
x86/boot: Harmonize the style of array-type parameter for fixup_pointer() calls
x86/boot: Fix incorrect startup_gdt_descr.size
x86/boot: Compile boot code with -std=gnu11 too
x86/boot: Increase section and file alignment to 4k/512
x86/boot: Split off PE/COFF .data section
x86/boot: Drop PE/COFF .reloc section
x86/boot: Construct PE/COFF .text section from assembler
x86/boot: Derive file size from _edata symbol
x86/boot: Define setup size in linker script
x86/boot: Set EFI handover offset directly in header asm
x86/boot: Grab kernel_info offset from zoffset header directly
x86/boot: Drop references to startup_64
x86/boot: Drop redundant code setting the root device
x86/boot: Omit compression buffer from PE/COFF image memory footprint
x86/boot: Remove the 'bugger off' message
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"Fair scheduler (SCHED_OTHER) improvements:
- Remove the old and now unused SIS_PROP code & option
- Scan cluster before LLC in the wake-up path
- Use candidate prev/recent_used CPU if scanning failed for cluster
wakeup
NUMA scheduling improvements:
- Improve the VMA access-PID code to better skip/scan VMAs
- Extend tracing to cover VMA-skipping decisions
- Improve/fix the recently introduced sched_numa_find_nth_cpu() code
- Generalize numa_map_to_online_node()
Energy scheduling improvements:
- Remove the EM_MAX_COMPLEXITY limit
- Add tracepoints to track energy computation
- Make the behavior of the 'sched_energy_aware' sysctl more
consistent
- Consolidate and clean up access to a CPU's max compute capacity
- Fix uclamp code corner cases
RT scheduling improvements:
- Drive dl_rq->overloaded with dl_rq->pushable_dl_tasks updates
- Drive the ->rto_mask with rt_rq->pushable_tasks updates
Scheduler scalability improvements:
- Rate-limit updates to tg->load_avg
- On x86 disable IBRS when CPU is offline to improve single-threaded
performance
- Micro-optimize in_task() and in_interrupt()
- Micro-optimize the PSI code
- Avoid updating PSI triggers and ->rtpoll_total when there are no
state changes
Core scheduler infrastructure improvements:
- Use saved_state to reduce some spurious freezer wakeups
- Bring in a handful of fast-headers improvements to scheduler
headers
- Make the scheduler UAPI headers more widely usable by user-space
- Simplify the control flow of scheduler syscalls by using lock
guards
- Fix sched_setaffinity() vs. CPU hotplug race
Scheduler debuggability improvements:
- Disallow writing invalid values to sched_rt_period_us
- Fix a race in the rq-clock debugging code triggering warnings
- Fix a warning in the bandwidth distribution code
- Micro-optimize in_atomic_preempt_off() checks
- Enforce that the tasklist_lock is held in for_each_thread()
- Print the TGID in sched_show_task()
- Remove the /proc/sys/kernel/sched_child_runs_first sysctl
... and misc cleanups & fixes"
* tag 'sched-core-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (82 commits)
sched/fair: Remove SIS_PROP
sched/fair: Use candidate prev/recent_used CPU if scanning failed for cluster wakeup
sched/fair: Scan cluster before scanning LLC in wake-up path
sched: Add cpus_share_resources API
sched/core: Fix RQCF_ACT_SKIP leak
sched/fair: Remove unused 'curr' argument from pick_next_entity()
sched/nohz: Update comments about NEWILB_KICK
sched/fair: Remove duplicate #include
sched/psi: Update poll => rtpoll in relevant comments
sched: Make PELT acronym definition searchable
sched: Fix stop_one_cpu_nowait() vs hotplug
sched/psi: Bail out early from irq time accounting
sched/topology: Rename 'DIE' domain to 'PKG'
sched/psi: Delete the 'update_total' function parameter from update_triggers()
sched/psi: Avoid updating PSI triggers and ->rtpoll_total when there are no state changes
sched/headers: Remove comment referring to rq::cpu_load, since this has been removed
sched/numa: Complete scanning of inactive VMAs when there is no alternative
sched/numa: Complete scanning of partial VMAs regardless of PID activity
sched/numa: Move up the access pid reset logic
sched/numa: Trace decisions related to skipping VMAs
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Info Molnar:
"Futex improvements:
- Add the 'futex2' syscall ABI, which is an attempt to get away from
the multiplex syscall and adds a little room for extentions, while
lifting some limitations.
- Fix futex PI recursive rt_mutex waiter state bug
- Fix inter-process shared futexes on no-MMU systems
- Use folios instead of pages
Micro-optimizations of locking primitives:
- Improve arch_spin_value_unlocked() on asm-generic ticket spinlock
architectures, to improve lockref code generation
- Improve the x86-32 lockref_get_not_zero() main loop by adding
build-time CMPXCHG8B support detection for the relevant lockref
code, and by better interfacing the CMPXCHG8B assembly code with
the compiler
- Introduce arch_sync_try_cmpxchg() on x86 to improve
sync_try_cmpxchg() code generation. Convert some sync_cmpxchg()
users to sync_try_cmpxchg().
- Micro-optimize rcuref_put_slowpath()
Locking debuggability improvements:
- Improve CONFIG_DEBUG_RT_MUTEXES=y to have a fast-path as well
- Enforce atomicity of sched_submit_work(), which is de-facto atomic
but was un-enforced previously.
- Extend <linux/cleanup.h>'s no_free_ptr() with __must_check
semantics
- Fix ww_mutex self-tests
- Clean up const-propagation in <linux/seqlock.h> and simplify the
API-instantiation macros a bit
RT locking improvements:
- Provide the rt_mutex_*_schedule() primitives/helpers and use them
in the rtmutex code to avoid recursion vs. rtlock on the PI state.
- Add nested blocking lockdep asserts to rt_mutex_lock(),
rtlock_lock() and rwbase_read_lock()
.. plus misc fixes & cleanups"
* tag 'locking-core-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (39 commits)
futex: Don't include process MM in futex key on no-MMU
locking/seqlock: Fix grammar in comment
alpha: Fix up new futex syscall numbers
locking/seqlock: Propagate 'const' pointers within read-only methods, remove forced type casts
locking/lockdep: Fix string sizing bug that triggers a format-truncation compiler-warning
locking/seqlock: Change __seqprop() to return the function pointer
locking/seqlock: Simplify SEQCOUNT_LOCKNAME()
locking/atomics: Use atomic_try_cmpxchg_release() to micro-optimize rcuref_put_slowpath()
locking/atomic, xen: Use sync_try_cmpxchg() instead of sync_cmpxchg()
locking/atomic/x86: Introduce arch_sync_try_cmpxchg()
locking/atomic: Add generic support for sync_try_cmpxchg() and its fallback
locking/seqlock: Fix typo in comment
futex/requeue: Remove unnecessary ‘NULL’ initialization from futex_proxy_trylock_atomic()
locking/local, arch: Rewrite local_add_unless() as a static inline function
locking/debug: Fix debugfs API return value checks to use IS_ERR()
locking/ww_mutex/test: Make sure we bail out instead of livelock
locking/ww_mutex/test: Fix potential workqueue corruption
locking/ww_mutex/test: Use prng instead of rng to avoid hangs at bootup
futex: Add sys_futex_requeue()
futex: Add flags2 argument to futex_requeue()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull EDAC updates from Borislav Petkov:
- A new EDAC driver for Xilinx's Versal integrated memory controller
* tag 'edac_updates_for_v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
EDAC/versal: Add a Xilinx Versal memory controller driver
dt-bindings: memory-controllers: Add support for Xilinx Versal EDAC for DDRMC
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* clk-cleanup:
clk: si521xx: Increase stack based print buffer size in probe
clk: Use device_get_match_data()
clk: cdce925: Extend match support for OF tables
clk: si570: Simplify probe
clk: si5351: Simplify probe
clk: rs9: Use i2c_get_match_data() instead of device_get_match_data()
clk: clk-si544: Simplify probe() and is_valid_frequency()
clk: si521xx: Use i2c_get_match_data() instead of device_get_match_data()
clk: npcm7xx: Fix incorrect kfree
clk: at91: remove unnecessary conditions
clk: ti: fix double free in of_ti_divider_clk_setup()
clk: keystone: pll: fix a couple NULL vs IS_ERR() checks
clk: ralink: mtmips: quiet unused variable warning
clk: gate: fix comment typo and grammar
clk: asm9620: Remove 'hw' local variable that isn't checked
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'clk-frac-divider' into clk-next
- Make clk kunit tests work with lockdep
- Fix clk gate kunit test for big-endian
- Convert more than a handful of clk drivers to use regmap maple tree
- Consider the CLK_FRAC_DIVIDER_ZERO_BASED in fractional divider clk
implementation
* clk-renesas: (23 commits)
clk: renesas: r9a08g045: Add clock and reset support for SDHI1 and SDHI2
clk: renesas: rzg2l: Use %x format specifier to print CLK_ON_R()
clk: renesas: Add minimal boot support for RZ/G3S SoC
clk: renesas: rzg2l: Add divider clock for RZ/G3S
clk: renesas: rzg2l: Refactor SD mux driver
clk: renesas: rzg2l: Remove CPG_SDHI_DSEL from generic header
clk: renesas: rzg2l: Add struct clk_hw_data
clk: renesas: rzg2l: Add support for RZ/G3S PLL
clk: renesas: rzg2l: Remove critical area
clk: renesas: rzg2l: Fix computation formula
clk: renesas: rzg2l: Trust value returned by hardware
clk: renesas: rzg2l: Lock around writes to mux register
clk: renesas: rzg2l: Wait for status bit of SD mux before continuing
clk: renesas: rcar-gen3: Extend SDnH divider table
dt-bindings: clock: renesas,rzg2l-cpg: Document RZ/G3S SoC
clk: renesas: r8a7795: Constify r8a7795_*_clks
clk: renesas: r9a06g032: Name anonymous structs
clk: renesas: r9a06g032: Fix kerneldoc warning
clk: renesas: rzg2l: Use u32 for flag and mux_flags
clk: renesas: rzg2l: Use FIELD_GET() for PLL register fields
...
* clk-kunit:
clk: Fix clk gate kunit test on big-endian CPUs
clk: Parameterize clk_leaf_mux_set_rate_parent
clk: Drive clk_leaf_mux_set_rate_parent test from clk_ops
* clk-regmap:
clk: versaclock7: Convert to use maple tree register cache
clk: versaclock5: Convert to use maple tree register cache
clk: versaclock3: Convert to use maple tree register cache
clk: versaclock3: Remove redundant _is_writeable()
clk: si570: Convert to use maple tree register cache
clk: si544: Convert to use maple tree register cache
clk: si5351: Convert to use maple tree register cache
clk: si5341: Convert to use maple tree register cache
clk: si514: Convert to use maple tree register cache
clk: cdce925: Convert to use maple tree register cache
* clk-frac-divider:
clk: fractional-divider: tests: Add test suite for edge cases
clk: fractional-divider: Improve approximation when zero based and export
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and 'clk-qcom' into clk-next
- Add consumer info to clk debugfs
- Fix various clk drivers that have clk_hw_onecell_data not at the end
of an allocation
* clk-debugfs:
clk: Allow phase adjustment from debugfs
clk: Show active consumers of clocks in debugfs
* clk-spreadtrum:
clk: sprd: Composite driver support offset config
* clk-sifive:
clk: sifive: Allow building the driver as a module
clk: analogbits: Allow building the library as a module
* clk-counted:
clk: socfpga: agilex: Add bounds-checking coverage for struct stratix10_clock_data
clk: socfpga: Fix undefined behavior bug in struct stratix10_clock_data
clk: visconti: Add bounds-checking coverage for struct visconti_pll_provider
clk: visconti: Fix undefined behavior bug in struct visconti_pll_provider
* clk-qcom: (36 commits)
clk: qcom: apss-ipq6018: add the GPLL0 clock also as clock provider
clk: qcom: ipq5332: drop the CLK_SET_RATE_PARENT flag from GPLL clocks
clk: qcom: ipq9574: drop the CLK_SET_RATE_PARENT flag from GPLL clocks
clk: qcom: ipq5018: drop the CLK_SET_RATE_PARENT flag from GPLL clocks
clk: qcom: ipq6018: drop the CLK_SET_RATE_PARENT flag from PLL clocks
clk: qcom: ipq8074: drop the CLK_SET_RATE_PARENT flag from PLL clocks
clk: qcom: gcc-ipq6018: add QUP6 I2C clock
clk: qcom: apss-ipq6018: ipq5332: add safe source switch for a53pll
clk: qcom: apss-ipq-pll: Fix 'l' value for ipq5332_pll_config
clk: qcom: apss-ipq-pll: Use stromer plus ops for stromer plus pll
clk: qcom: clk-alpha-pll: introduce stromer plus ops
clk: qcom: config IPQ_APSS_6018 should depend on QCOM_SMEM
clk: qcom: videocc-sm8550: switch to clk_lucid_ole_pll_configure
clk: qcom: gpucc-sm8550: switch to clk_lucid_ole_pll_configure
clk: qcom: Replace of_device.h with explicit includes
clk: qcom: smd-rpm: Move CPUSS_GNoC clock to interconnect
clk: qcom: cbf-msm8996: Convert to platform remove callback returning void
clk: qcom: gcc-sm8150: Fix gcc_sdcc2_apps_clk_src
clk: qcom: Add GCC driver support for SM4450
dt-bindings: clock: qcom: Add GCC clocks for SM4450
...
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'clk-imx' into clk-next
- Add clock driver for TWL6032
* clk-doc:
clk: linux/clk-provider.h: fix kernel-doc warnings and typos
* clk-amlogic:
clk: meson: S4: select CONFIG_COMMON_CLK_MESON_CLKC_UTILS
clk: meson: S4: add support for Amlogic S4 SoC peripheral clock controller
clk: meson: S4: add support for Amlogic S4 SoC PLL clock driver
dt-bindings: clock: document Amlogic S4 SoC peripherals clock controller
dt-bindings: clock: document Amlogic S4 SoC PLL clock controller
* clk-mediatek:
clk: mediatek: fix double free in mtk_clk_register_pllfh()
clk: mediatek: clk-mt2701: Add check for mtk_alloc_clk_data
clk: mediatek: clk-mt7629: Add check for mtk_alloc_clk_data
clk: mediatek: clk-mt7629-eth: Add check for mtk_alloc_clk_data
clk: mediatek: clk-mt6797: Add check for mtk_alloc_clk_data
clk: mediatek: clk-mt6779: Add check for mtk_alloc_clk_data
clk: mediatek: clk-mt6765: Add check for mtk_alloc_clk_data
* clk-twl:
clk: twl: add clock driver for TWL6032
* clk-imx:
clk: imx: imx8qm/qxp: add more resources to whitelist
clk: imx: scu: ignore clks not owned by Cortex-A partition
clk: imx8: remove MLB support
clk: imx: imx8qm-rsrc: drop VPU_UART/VPUCORE
clk: imx: imx8qxp: correct the enet clocks for i.MX8DXL
clk: imx: imx8qxp: Fix elcdif_pll clock
clk: imx: imx8dxl-rsrc: keep sorted in the ascending order
clk: imx: imx6sx: Allow a different LCDIF1 clock parent
clk: imx: imx8mq: correct error handling path
clk: imx8mp: Remove non-existent IMX8MP_CLK_AUDIOMIX_PDM_ROOT
clk: imx: imx8: Simplify clk_imx_acm_detach_pm_domains()
clk: imx: imx8: Add a message in case of devm_clk_hw_register_mux_parent_data_table() error
clk: imx: imx8: Fix an error handling path in imx8_acm_clk_probe()
clk: imx: imx8: Fix an error handling path if devm_clk_hw_register_mux_parent_data_table() fails
clk: imx: imx8: Fix an error handling path in clk_imx_acm_attach_pm_domains()
clk: imx: Select MXC_CLK for CLK_IMX8QXP
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Pull initial bcachefs updates from Kent Overstreet:
"Here's the bcachefs filesystem pull request.
One new patch since last week: the exportfs constants ended up
conflicting with other filesystems that are also getting added to the
global enum, so switched to new constants picked by Amir.
The only new non fs/bcachefs/ patch is the objtool patch that adds
bcachefs functions to the list of noreturns. The patch that exports
osq_lock() has been dropped for now, per Ingo"
* tag 'bcachefs-2023-10-30' of https://evilpiepirate.org/git/bcachefs: (2781 commits)
exportfs: Change bcachefs fid_type enum to avoid conflicts
bcachefs: Refactor memcpy into direct assignment
bcachefs: Fix drop_alloc_keys()
bcachefs: snapshot_create_lock
bcachefs: Fix snapshot skiplists during snapshot deletion
bcachefs: bch2_sb_field_get() refactoring
bcachefs: KEY_TYPE_error now counts towards i_sectors
bcachefs: Fix handling of unknown bkey types
bcachefs: Switch to unsafe_memcpy() in a few places
bcachefs: Use struct_size()
bcachefs: Correctly initialize new buckets on device resize
bcachefs: Fix another smatch complaint
bcachefs: Use strsep() in split_devs()
bcachefs: Add iops fields to bch_member
bcachefs: Rename bch_sb_field_members -> bch_sb_field_members_v1
bcachefs: New superblock section members_v2
bcachefs: Add new helper to retrieve bch_member from sb
bcachefs: bucket_lock() is now a sleepable lock
bcachefs: fix crc32c checksum merge byte order problem
bcachefs: Fix bch2_inode_delete_keys()
...
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Patches in Joerg's iommu tree to convert the mock driver to use
domain_alloc_paging() that clash badly with the way the selftest changes
for nesting were structured.
Massage the selftest so that it looks closer the code after the
domain_alloc_paging() conversion to ease the merge. Change
__mock_domain_alloc_paging() into mock_domain_alloc_paging() in the same
way as the iommu tree. The merge resolution then trivially takes both and
deletes mock_domain_alloc().
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Nicolin Chen <[email protected]>
Reviewed-by: Kevin Tian <[email protected]>
Reviewed-by: Yi Liu <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
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gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs
Pull vfs inode time accessor updates from Christian Brauner:
"This finishes the conversion of all inode time fields to accessor
functions as discussed on list. Changing timestamps manually as we
used to do before is error prone. Using accessors function makes this
robust.
It does not contain the switch of the time fields to discrete 64 bit
integers to replace struct timespec and free up space in struct inode.
But after this, the switch can be trivially made and the patch should
only affect the vfs if we decide to do it"
* tag 'vfs-6.7.ctime' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs: (86 commits)
fs: rename inode i_atime and i_mtime fields
security: convert to new timestamp accessors
selinux: convert to new timestamp accessors
apparmor: convert to new timestamp accessors
sunrpc: convert to new timestamp accessors
mm: convert to new timestamp accessors
bpf: convert to new timestamp accessors
ipc: convert to new timestamp accessors
linux: convert to new timestamp accessors
zonefs: convert to new timestamp accessors
xfs: convert to new timestamp accessors
vboxsf: convert to new timestamp accessors
ufs: convert to new timestamp accessors
udf: convert to new timestamp accessors
ubifs: convert to new timestamp accessors
tracefs: convert to new timestamp accessors
sysv: convert to new timestamp accessors
squashfs: convert to new timestamp accessors
server: convert to new timestamp accessors
client: convert to new timestamp accessors
...
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gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs
Pull iov_iter updates from Christian Brauner:
"This contain's David's iov_iter cleanup work to convert the iov_iter
iteration macros to inline functions:
- Remove last_offset from iov_iter as it was only used by ITER_PIPE
- Add a __user tag on copy_mc_to_user()'s dst argument on x86 to
match that on powerpc and get rid of a sparse warning
- Convert iter->user_backed to user_backed_iter() in the sound PCM
driver
- Convert iter->user_backed to user_backed_iter() in a couple of
infiniband drivers
- Renumber the type enum so that the ITER_* constants match the order
in iterate_and_advance*()
- Since the preceding patch puts UBUF and IOVEC at 0 and 1, change
user_backed_iter() to just use the type value and get rid of the
extra flag
- Convert the iov_iter iteration macros to always-inline functions to
make the code easier to follow. It uses function pointers, but they
get optimised away
- Move the check for ->copy_mc to _copy_from_iter() and
copy_page_from_iter_atomic() rather than in memcpy_from_iter_mc()
where it gets repeated for every segment. Instead, we check once
and invoke a side function that can use iterate_bvec() rather than
iterate_and_advance() and supply a different step function
- Move the copy-and-csum code to net/ where it can be in proximity
with the code that uses it
- Fold memcpy_and_csum() in to its two users
- Move csum_and_copy_from_iter_full() out of line and merge in
csum_and_copy_from_iter() since the former is the only caller of
the latter
- Move hash_and_copy_to_iter() to net/ where it can be with its only
caller"
* tag 'vfs-6.7.iov_iter' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs:
iov_iter, net: Move hash_and_copy_to_iter() to net/
iov_iter, net: Merge csum_and_copy_from_iter{,_full}() together
iov_iter, net: Fold in csum_and_memcpy()
iov_iter, net: Move csum_and_copy_to/from_iter() to net/
iov_iter: Don't deal with iter->copy_mc in memcpy_from_iter_mc()
iov_iter: Convert iterate*() to inline funcs
iov_iter: Derive user-backedness from the iterator type
iov_iter: Renumber ITER_* constants
infiniband: Use user_backed_iter() to see if iterator is UBUF/IOVEC
sound: Fix snd_pcm_readv()/writev() to use iov access functions
iov_iter, x86: Be consistent about the __user tag on copy_mc_to_user()
iov_iter: Remove last_offset from iov_iter as it was for ITER_PIPE
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Pull misc vfs updates from Christian Brauner:
"This contains the usual miscellaneous features, cleanups, and fixes
for vfs and individual fses.
Features:
- Rename and export helpers that get write access to a mount. They
are used in overlayfs to get write access to the upper mount.
- Print the pretty name of the root device on boot failure. This
helps in scenarios where we would usually only print
"unknown-block(1,2)".
- Add an internal SB_I_NOUMASK flag. This is another part in the
endless POSIX ACL saga in a way.
When POSIX ACLs are enabled via SB_POSIXACL the vfs cannot strip
the umask because if the relevant inode has POSIX ACLs set it might
take the umask from there. But if the inode doesn't have any POSIX
ACLs set then we apply the umask in the filesytem itself. So we end
up with:
(1) no SB_POSIXACL -> strip umask in vfs
(2) SB_POSIXACL -> strip umask in filesystem
The umask semantics associated with SB_POSIXACL allowed filesystems
that don't even support POSIX ACLs at all to raise SB_POSIXACL
purely to avoid umask stripping. That specifically means NFS v4 and
Overlayfs. NFS v4 does it because it delegates this to the server
and Overlayfs because it needs to delegate umask stripping to the
upper filesystem, i.e., the filesystem used as the writable layer.
This went so far that SB_POSIXACL is raised eve on kernels that
don't even have POSIX ACL support at all.
Stop this blatant abuse and add SB_I_NOUMASK which is an internal
superblock flag that filesystems can raise to opt out of umask
handling. That should really only be the two mentioned above. It's
not that we want any filesystems to do this. Ideally we have all
umask handling always in the vfs.
- Make overlayfs use SB_I_NOUMASK too.
- Now that we have SB_I_NOUMASK, stop checking for SB_POSIXACL in
IS_POSIXACL() if the kernel doesn't have support for it. This is a
very old patch but it's only possible to do this now with the wider
cleanup that was done.
- Follow-up work on fake path handling from last cycle. Citing mostly
from Amir:
When overlayfs was first merged, overlayfs files of regular files
and directories, the ones that are installed in file table, had a
"fake" path, namely, f_path is the overlayfs path and f_inode is
the "real" inode on the underlying filesystem.
In v6.5, we took another small step by introducing of the
backing_file container and the file_real_path() helper. This change
allowed vfs and filesystem code to get the "real" path of an
overlayfs backing file. With this change, we were able to make
fsnotify work correctly and report events on the "real" filesystem
objects that were accessed via overlayfs.
This method works fine, but it still leaves the vfs vulnerable to
new code that is not aware of files with fake path. A recent
example is commit db1d1e8b9867 ("IMA: use vfs_getattr_nosec to get
the i_version"). This commit uses direct referencing to f_path in
IMA code that otherwise uses file_inode() and file_dentry() to
reference the filesystem objects that it is measuring.
This contains work to switch things around: instead of having
filesystem code opt-in to get the "real" path, have generic code
opt-in for the "fake" path in the few places that it is needed.
Is it far more likely that new filesystems code that does not use
the file_dentry() and file_real_path() helpers will end up causing
crashes or averting LSM/audit rules if we keep the "fake" path
exposed by default.
This change already makes file_dentry() moot, but for now we did
not change this helper just added a WARN_ON() in ovl_d_real() to
catch if we have made any wrong assumptions.
After the dust settles on this change, we can make file_dentry() a
plain accessor and we can drop the inode argument to ->d_real().
- Switch struct file to SLAB_TYPESAFE_BY_RCU. This looks like a small
change but it really isn't and I would like to see everyone on
their tippie toes for any possible bugs from this work.
Essentially we've been doing most of what SLAB_TYPESAFE_BY_RCU for
files since a very long time because of the nasty interactions
between the SCM_RIGHTS file descriptor garbage collection. So
extending it makes a lot of sense but it is a subtle change. There
are almost no places that fiddle with file rcu semantics directly
and the ones that did mess around with struct file internal under
rcu have been made to stop doing that because it really was always
dodgy.
I forgot to put in the link tag for this change and the discussion
in the commit so adding it into the merge message:
https://lore.kernel.org/r/[email protected]
Cleanups:
- Various smaller pipe cleanups including the removal of a spin lock
that was only used to protect against writes without pipe_lock()
from O_NOTIFICATION_PIPE aka watch queues. As that was never
implemented remove the additional locking from pipe_write().
- Annotate struct watch_filter with the new __counted_by attribute.
- Clarify do_unlinkat() cleanup so that it doesn't look like an extra
iput() is done that would cause issues.
- Simplify file cleanup when the file has never been opened.
- Use module helper instead of open-coding it.
- Predict error unlikely for stale retry.
- Use WRITE_ONCE() for mount expiry field instead of just commenting
that one hopes the compiler doesn't get smart.
Fixes:
- Fix readahead on block devices.
- Fix writeback when layztime is enabled and inodes whose timestamp
is the only thing that changed reside on wb->b_dirty_time. This
caused excessively large zombie memory cgroup when lazytime was
enabled as such inodes weren't handled fast enough.
- Convert BUG_ON() to WARN_ON_ONCE() in open_last_lookups()"
* tag 'vfs-6.7.misc' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs: (26 commits)
file, i915: fix file reference for mmap_singleton()
vfs: Convert BUG_ON to WARN_ON_ONCE in open_last_lookups
writeback, cgroup: switch inodes with dirty timestamps to release dying cgwbs
chardev: Simplify usage of try_module_get()
ovl: rely on SB_I_NOUMASK
fs: fix umask on NFS with CONFIG_FS_POSIX_ACL=n
fs: store real path instead of fake path in backing file f_path
fs: create helper file_user_path() for user displayed mapped file path
fs: get mnt_writers count for an open backing file's real path
vfs: stop counting on gcc not messing with mnt_expiry_mark if not asked
vfs: predict the error in retry_estale as unlikely
backing file: free directly
vfs: fix readahead(2) on block devices
io_uring: use files_lookup_fd_locked()
file: convert to SLAB_TYPESAFE_BY_RCU
vfs: shave work on failed file open
fs: simplify misleading code to remove ambiguity regarding ihold()/iput()
watch_queue: Annotate struct watch_filter with __counted_by
fs/pipe: use spinlock in pipe_read() only if there is a watch_queue
fs/pipe: remove unnecessary spinlock from pipe_write()
...
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gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs
Pull vfs superblock updates from Christian Brauner:
"This contains the work to make block device opening functions return a
struct bdev_handle instead of just a struct block_device. The same
struct bdev_handle is then also passed to block device closing
functions.
This allows us to propagate context from opening to closing a block
device without having to modify all users everytime.
Sidenote, in the future we might even want to try and have block
device opening functions return a struct file directly but that's a
series on top of this.
These are further preparatory changes to be able to count writable
opens and blocking writes to mounted block devices. That's a separate
piece of work for next cycle and for that we absolutely need the
changes to btrfs that have been quietly dropped somehow.
Originally the series contained a patch that removed the old
blkdev_*() helpers. But since this would've caused needles churn in
-next for bcachefs we ended up delaying it.
The second piece of work addresses one of the major annoyances about
the work last cycle, namely that we required dropping s_umount
whenever we used the superblock and fs_holder_ops for a block device.
The reason for that requirement had been that in some codepaths
s_umount could've been taken under disk->open_mutex (that's always
been the case, at least theoretically). For example, on surprise block
device removal or media change. And opening and closing block devices
required grabbing disk->open_mutex as well.
So we did the work and went through the block layer and fixed all
those places so that s_umount is never taken under disk->open_mutex.
This means no more brittle games where we yield and reacquire s_umount
during block device opening and closing and no more requirements where
block devices need to be closed. Filesystems don't need to care about
this.
There's a bunch of other follow-up work such as moving block device
freezing and thawing to holder operations which makes it work for all
block devices and not just the main block device just as we did for
surprise removal. But that is for next cycle.
Tested with fstests for all major fses, blktests, LTP"
* tag 'vfs-6.7.super' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs: (37 commits)
porting: update locking requirements
fs: assert that open_mutex isn't held over holder ops
block: assert that we're not holding open_mutex over blk_report_disk_dead
block: move bdev_mark_dead out of disk_check_media_change
block: WARN_ON_ONCE() when we remove active partitions
block: simplify bdev_del_partition()
fs: Avoid grabbing sb->s_umount under bdev->bd_holder_lock
jfs: fix log->bdev_handle null ptr deref in lbmStartIO
bcache: Fixup error handling in register_cache()
xfs: Convert to bdev_open_by_path()
reiserfs: Convert to bdev_open_by_dev/path()
ocfs2: Convert to use bdev_open_by_dev()
nfs/blocklayout: Convert to use bdev_open_by_dev/path()
jfs: Convert to bdev_open_by_dev()
f2fs: Convert to bdev_open_by_dev/path()
ext4: Convert to bdev_open_by_dev()
erofs: Convert to use bdev_open_by_path()
btrfs: Convert to bdev_open_by_path()
fs: Convert to bdev_open_by_dev()
mm/swap: Convert to use bdev_open_by_dev()
...
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iommufd_test_dirty()/IOMMU_TEST_OP_DIRTY sets the dirty bits in the mock
domain implementation that the userspace side validates against what it
obtains via the UAPI.
However in introducing iommufd_test_dirty() it forgot to validate page_size
being 0 leading to two possible divide-by-zero problems: one at the
beginning when calculating @max and while calculating the IOVA in the
XArray PFN tracking list.
While at it, validate the length to require non-zero value as well, as we
can't be allocating a 0-sized bitmap.
Link: https://lore.kernel.org/r/[email protected]
Reported-by: [email protected]
Closes: https://lore.kernel.org/linux-iommu/[email protected]/
Fixes: a9af47e382a4 ("iommufd/selftest: Test IOMMU_HWPT_GET_DIRTY_BITMAP")
Signed-off-by: Joao Martins <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
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