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It would be tempting to turn the 'pause' state into a flag.
However, this cannot easily be done as it is updated out of context,
while all the flags expect to only be updated from the vcpu thread.
Turning it into a flag would require to make all flag updates
atomic, which isn't necessary desireable.
Document this, and take this opportunity to move the field next
to the flag sets, filling a hole in the vcpu structure.
Reviewed-by: Fuad Tabba <[email protected]>
Reviewed-by: Reiji Watanabe <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
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Now that we can detect flags overflowing their container, reduce
the size of all flag set members in the vcpu struct, turning them
into 8bit quantities.
Even with the FP state enum occupying 32bit, the whole of the state
that was represented by flags is smaller by one byte. Profit!
Reviewed-by: Fuad Tabba <[email protected]>
Reviewed-by: Reiji Watanabe <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
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Flags are great, but flags can also be dangerous: it is easy
to encode a flag that is bigger than its container (unless the
container is a u64), and it is easy to construct a flag value
that doesn't fit in the mask that is associated with it.
Add a couple of build-time sanity checks that ensure we catch
these two cases.
Reviewed-by: Fuad Tabba <[email protected]>
Reviewed-by: Reiji Watanabe <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
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We really don't want PENDING_EXCEPTION and INCREMENT_PC to ever be
set at the same time, as they are mutually exclusive. Add checks
that will generate a warning should this ever happen.
Reviewed-by: Fuad Tabba <[email protected]>
Reviewed-by: Reiji Watanabe <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
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The aptly named boolean 'sysregs_loaded_on_cpu' tracks whether
some of the vcpu system registers are resident on the physical
CPU when running in VHE mode.
This is obviously a flag in hidding, so let's convert it to
a state flag, since this is solely a host concern (the hypervisor
itself always knows which state we're in).
Reviewed-by: Fuad Tabba <[email protected]>
Reviewed-by: Reiji Watanabe <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
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Horray, we have now sorted all the preexisting flags, and the
'flags' field is now unused. Get rid of it while nobody is
looking.
Reviewed-by: Fuad Tabba <[email protected]>
Reviewed-by: Reiji Watanabe <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
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The host kernel uses the WFIT flag to remember that a vcpu has used
this instruction and wake it up as required. Move it to the state
set, as nothing in the hypervisor uses this information.
Reviewed-by: Fuad Tabba <[email protected]>
Reviewed-by: Reiji Watanabe <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
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The ON_UNSUPPORTED_CPU flag is only there to track the sad fact
that we have ended-up on a CPU where we cannot really run.
Since this is only for the host kernel's use, move it to the state
set.
Reviewed-by: Fuad Tabba <[email protected]>
Reviewed-by: Reiji Watanabe <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
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The two HOST_{SVE,SME}_ENABLED are only used for the host kernel
to track its own state across a vcpu run so that it can be fully
restored.
Move these flags to the so called state set.
Reviewed-by: Fuad Tabba <[email protected]>
Reviewed-by: Reiji Watanabe <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
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The three debug flags (which deal with the debug registers, SPE and
TRBE) all are input flags to the hypervisor code.
Move them into the input set and convert them to the new accessors.
Reviewed-by: Fuad Tabba <[email protected]>
Reviewed-by: Reiji Watanabe <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
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The PC update flags (which also deal with exception injection)
is one of the most complicated use of the flag we have. Make it
more fool prof by:
- moving it over to the new accessors and assign it to the
input flag set
- turn the combination of generic ELx flags with another flag
indicating the target EL itself into an explicit set of
flags for each EL and vector combination
- add a new accessor to pend the exception
This is otherwise a pretty straightformward conversion.
Reviewed-by: Fuad Tabba <[email protected]>
Reviewed-by: Reiji Watanabe <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
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The KVM_ARM64_{GUEST_HAS_SVE,VCPU_SVE_FINALIZED,GUEST_HAS_PTRAUTH}
flags are purely configuration flags. Once set, they are never cleared,
but evaluated all over the code base.
Move these three flags into the configuration set in one go, using
the new accessors, and take this opportunity to drop the KVM_ARM64_
prefix which doesn't provide any help.
Reviewed-by: Fuad Tabba <[email protected]>
Reviewed-by: Reiji Watanabe <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
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It so appears that each of the vcpu flags is really belonging to
one of three categories:
- a configuration flag, set once and for all
- an input flag generated by the kernel for the hypervisor to use
- a state flag that is only for the kernel's own bookkeeping
As we are going to split all the existing flags into these three
sets, introduce all three in one go.
No functional change other than a bit of bloat...
Reviewed-by: Fuad Tabba <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
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Careful analysis of the vcpu flags show that this is a mix of
configuration, communication between the host and the hypervisor,
as well as anciliary state that has no consistency. It'd be a lot
better if we could split these flags into consistent categories.
However, even if we split these flags apart, we want to make sure
that each flag can only be applied to its own set, and not across
sets.
To achieve this, use a preprocessor hack so that each flag is always
associated with:
- the set that contains it,
- a mask that describe all the bits that contain it (for a simple
flag, this is the same thing as the flag itself, but we will
eventually have values that cover multiple bits at once).
Each flag is thus a triplet that is not directly usable as a value,
but used by three helpers that allow the flag to be set, cleared,
and fetched. By mandating the use of such helper, we can easily
enforce that a flag can only be used with the set it belongs to.
Finally, one last helper "unpacks" the raw value from the triplet
that represents a flag, which is useful for multi-bit values that
need to be enumerated (in a switch statement, for example).
Further patches will start making use of this infrastructure.
Signed-off-by: Marc Zyngier <[email protected]>
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The KVM FP code uses a pair of flags to denote three states:
- FP_ENABLED set: the guest owns the FP state
- FP_HOST set: the host owns the FP state
- FP_ENABLED and FP_HOST clear: nobody owns the FP state at all
and both flags set is an illegal state, which nothing ever checks
for...
As it turns out, this isn't really a good match for flags, and
we'd be better off if this was a simpler tristate, each state
having a name that actually reflect the state:
- FP_STATE_FREE
- FP_STATE_HOST_OWNED
- FP_STATE_GUEST_OWNED
Kill the two flags, and move over to an enum encoding these
three states. This results in less confusing code, and less risk of
ending up in the uncharted territory of a 4th state if we forget
to clear one of the two flags.
Signed-off-by: Marc Zyngier <[email protected]>
Reviewed-by: Mark Brown <[email protected]>
Reviewed-by: Reiji Watanabe <[email protected]>
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The vcpu KVM_ARM64_FP_FOREIGN_FPSTATE flag tracks the thread's own
TIF_FOREIGN_FPSTATE so that we can evaluate just before running
the vcpu whether it the FP regs contain something that is owned
by the vcpu or not by updating the rest of the FP flags.
We do this in the hypervisor code in order to make sure we're
in a context where we are not interruptible. But we already
have a hook in the run loop to generate this flag. We may as
well update the FP flags directly and save the pointless flag
tracking.
Whilst we're at it, rename update_fp_enabled() to guest_owns_fp_regs()
to indicate what the leftover of this helper actually do.
Signed-off-by: Marc Zyngier <[email protected]>
Reviewed-by: Reiji Watanabe <[email protected]>
Reviewed-by: Mark Brown <[email protected]>
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On each vcpu load, we set the KVM_ARM64_HOST_SME_ENABLED
flag if SME is enabled for EL0 on the host. This is used to
restore the correct state on vpcu put.
However, it appears that nothing ever clears this flag. Once
set, it will stick until the vcpu is destroyed, which has the
potential to spuriously enable SME for userspace. As it turns
out, this is due to the SME code being more or less copied from
SVE, and inheriting the same shortcomings.
We never saw the issue because nothing uses SME, and the amount
of testing is probably still pretty low.
Fixes: 861262ab8627 ("KVM: arm64: Handle SME host state when running guests")
Signed-off-by: Marc Zyngier <[email protected]>
Reviwed-by: Mark Brown <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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On each vcpu load, we set the KVM_ARM64_HOST_SVE_ENABLED
flag if SVE is enabled for EL0 on the host. This is used to restore
the correct state on vpcu put.
However, it appears that nothing ever clears this flag. Once
set, it will stick until the vcpu is destroyed, which has the
potential to spuriously enable SVE for userspace.
We probably never saw the issue because no VMM uses SVE, but
that's still pretty bad. Unconditionally clearing the flag
on vcpu load addresses the issue.
Fixes: 8383741ab2e7 ("KVM: arm64: Get rid of host SVE tracking/saving")
Signed-off-by: Marc Zyngier <[email protected]>
Cc: [email protected]
Reviewed-by: Mark Brown <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull file descriptor fix from Al Viro:
"Fix for breakage in #work.fd this window"
* tag 'pull-work.fd-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
fix the breakage in close_fd_get_file() calling conventions change
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull mm hotfixes from Andrew Morton:
"Fixups for various recently-added and longer-term issues and a few
minor tweaks:
- fixes for material merged during this merge window
- cc:stable fixes for more longstanding issues
- minor mailmap and MAINTAINERS updates"
* tag 'mm-hotfixes-stable-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
mm/oom_kill.c: fix vm_oom_kill_table[] ifdeffery
x86/kexec: fix memory leak of elf header buffer
mm/memremap: fix missing call to untrack_pfn() in pagemap_range()
mm: page_isolation: use compound_nr() correctly in isolate_single_pageblock()
mm: hugetlb_vmemmap: fix CONFIG_HUGETLB_PAGE_FREE_VMEMMAP_DEFAULT_ON
MAINTAINERS: add maintainer information for z3fold
mailmap: update Josh Poimboeuf's email
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull delay-accounting update from Andrew Morton:
"A single featurette for delay accounting.
Delayed a bit because, unusually, it had dependencies on both the
mm-stable and mm-nonmm-stable queues"
* tag 'mm-nonmm-stable-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
delayacct: track delays from write-protect copy
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The bluetooth code uses our bitmap infrastructure for the two bits (!)
of connection setup flags, and in the process causes odd problems when
it converts between a bitmap and just the regular values of said bits.
It's completely pointless to do things like bitmap_to_arr32() to convert
a bitmap into a u32. It shoudln't have been a bitmap in the first
place. The reason to use bitmaps is if you have arbitrary number of
bits you want to manage (not two!), or if you rely on the atomicity
guarantees of the bitmap setting and clearing.
The code could use an "atomic_t" and use "atomic_or/andnot()" to set and
clear the bit values, but considering that it then copies the bitmaps
around with "bitmap_to_arr32()" and friends, there clearly cannot be a
lot of atomicity requirements.
So just use a regular integer.
In the process, this avoids the warnings about erroneous use of
bitmap_from_u64() which were triggered on 32-bit architectures when
conversion from a u64 would access two words (and, surprise, surprise,
only one word is needed - and indeed overkill - for a 2-bit bitmap).
That was always problematic, but the compiler seems to notice it and
warn about the invalid pattern only after commit 0a97953fd221 ("lib: add
bitmap_{from,to}_arr64") changed the exact implementation details of
'bitmap_from_u64()', as reported by Sudip Mukherjee and Stephen Rothwell.
Fixes: fe92ee6425a2 ("Bluetooth: hci_core: Rework hci_conn_params flags")
Link: https://lore.kernel.org/all/YpyJ9qTNHJzz0FHY@debian/
Link: https://lore.kernel.org/all/[email protected]/
Link: https://lore.kernel.org/all/[email protected]/
Reported-by: Stephen Rothwell <[email protected]>
Reported-by: Sudip Mukherjee <[email protected]>
Reviewed-by: Yury Norov <[email protected]>
Cc: Luiz Augusto von Dentz <[email protected]>
Cc: Marcel Holtmann <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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It used to grab an extra reference to struct file rather than
just transferring to caller the one it had removed from descriptor
table. New variant doesn't, and callers need to be adjusted.
Reported-and-tested-by: [email protected]
Fixes: 6319194ec57b ("Unify the primitives for file descriptor closing")
Signed-off-by: Al Viro <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 SGX fix from Thomas Gleixner:
"A single fix for x86/SGX to prevent that memory which is allocated for
an SGX enclave is accounted to the wrong memory control group"
* tag 'x86-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/sgx: Set active memcg prior to shmem allocation
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mm cleanup from Thomas Gleixner:
"Use PAGE_ALIGNED() instead of open coding it in the x86/mm code"
* tag 'x86-mm-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm: Use PAGE_ALIGNED(x) instead of IS_ALIGNED(x, PAGE_SIZE)
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 microcode updates from Thomas Gleixner:
- Disable late microcode loading by default. Unless the HW people get
their act together and provide a required minimum version in the
microcode header for making a halfways informed decision its just
lottery and broken.
- Warn and taint the kernel when microcode is loaded late
- Remove the old unused microcode loader interface
- Remove a redundant perf callback from the microcode loader
* tag 'x86-microcode-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/microcode: Remove unnecessary perf callback
x86/microcode: Taint and warn on late loading
x86/microcode: Default-disable late loading
x86/microcode: Rip out the OLD_INTERFACE
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cleanups from Thomas Gleixner:
"A set of small x86 cleanups:
- Remove unused headers in the IDT code
- Kconfig indendation and comment fixes
- Fix all 'the the' typos in one go instead of waiting for bots to
fix one at a time"
* tag 'x86-cleanups-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86: Fix all occurences of the "the the" typo
x86/idt: Remove unused headers
x86/Kconfig: Fix indentation of arch/x86/Kconfig.debug
x86/Kconfig: Fix indentation and add endif comments to arch/x86/Kconfig
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 boot update from Thomas Gleixner:
"Use strlcpy() instead of strscpy() in arch_setup()"
* tag 'x86-boot-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/setup: Use strscpy() to replace deprecated strlcpy()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull clockevent/clocksource updates from Thomas Gleixner:
- Device tree bindings for MT8186
- Tell the kernel that the RISC-V SBI timer stops in deeper power
states
- Make device tree parsing in sp804 more robust
- Dead code removal and tiny fixes here and there
- Add the missing SPDX identifiers
* tag 'timers-core-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clocksource/drivers/oxnas-rps: Fix irq_of_parse_and_map() return value
clocksource/drivers/timer-ti-dm: Remove unnecessary NULL check
clocksource/drivers/timer-sun5i: Convert to SPDX identifier
clocksource/drivers/timer-sun4i: Convert to SPDX identifier
clocksource/drivers/pistachio: Convert to SPDX identifier
clocksource/drivers/orion: Convert to SPDX identifier
clocksource/drivers/lpc32xx: Convert to SPDX identifier
clocksource/drivers/digicolor: Convert to SPDX identifier
clocksource/drivers/armada-370-xp: Convert to SPDX identifier
clocksource/drivers/mips-gic-timer: Convert to SPDX identifier
clocksource/drivers/jcore: Convert to SPDX identifier
clocksource/drivers/bcm_kona: Convert to SPDX identifier
clocksource/drivers/sp804: Avoid error on multiple instances
clocksource/drivers/riscv: Events are stopped during CPU suspend
clocksource/drivers/ixp4xx: Drop boardfile probe path
dt-bindings: timer: Add compatible for Mediatek MT8186
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fix from Thomas Gleixner:
"Fix the fallout of sysctl code move which placed the init function
wrong"
* tag 'sched-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/autogroup: Fix sysctl move
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Thomas Gleixner:
- Make the ICL event constraints match reality
- Remove a unused local variable
* tag 'perf-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/core: Remove unused local variable
perf/x86/intel: Fix event constraints for ICL
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixlet from Thomas Gleixner:
"Trivial indentation fix in Kconfig"
* tag 'perf-core-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/Kconfig: Fix indentation in the Kconfig file
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool fixes from Thomas Gleixner:
- Handle __ubsan_handle_builtin_unreachable() correctly and treat it as
noreturn
- Allow architectures to select uaccess validation
- Use the non-instrumented bit test for test_cpu_has() to prevent
escape from non-instrumentable regions
- Use arch_ prefixed atomics for JUMP_LABEL=n builds to prevent escape
from non-instrumentable regions
- Mark a few tiny inline as __always_inline to prevent GCC from
bringing them out of line and instrumenting them
- Mark the empty stub context_tracking_enabled() as always inline as
GCC brings them out of line and instruments the empty shell
- Annotate ex_handler_msr_mce() as dead end
* tag 'objtool-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/extable: Annotate ex_handler_msr_mce() as a dead end
context_tracking: Always inline empty stubs
x86: Always inline on_thread_stack() and current_top_of_stack()
jump_label,noinstr: Avoid instrumentation for JUMP_LABEL=n builds
x86/cpu: Elide KCSAN for cpu_has() and friends
objtool: Mark __ubsan_handle_builtin_unreachable() as noreturn
objtool: Add CONFIG_HAVE_UACCESS_VALIDATION
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Pull more SCSI updates from James Bottomley:
"Mostly small bug fixes plus other trivial updates.
The major change of note is moving ufs out of scsi and a minor update
to lpfc vmid handling"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (24 commits)
scsi: qla2xxx: Remove unused 'ql_dm_tgt_ex_pct' parameter
scsi: qla2xxx: Remove setting of 'req' and 'rsp' parameters
scsi: mpi3mr: Fix kernel-doc
scsi: lpfc: Add support for ATTO Fibre Channel devices
scsi: core: Return BLK_STS_TRANSPORT for ALUA transitioning
scsi: sd_zbc: Prevent zone information memory leak
scsi: sd: Fix potential NULL pointer dereference
scsi: mpi3mr: Rework mrioc->bsg_device model to fix warnings
scsi: myrb: Fix up null pointer access on myrb_cleanup()
scsi: core: Unexport scsi_bus_type
scsi: sd: Don't call blk_cleanup_disk() in sd_probe()
scsi: ufs: ufshcd: Delete unnecessary NULL check
scsi: isci: Fix typo in comment
scsi: pmcraid: Fix typo in comment
scsi: smartpqi: Fix typo in comment
scsi: qedf: Fix typo in comment
scsi: esas2r: Fix typo in comment
scsi: storvsc: Fix typo in comment
scsi: ufs: Split the drivers/scsi/ufs directory
scsi: qla1280: Remove redundant variable
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux
Pull hardware timestamping subsystem from Thierry Reding:
"This contains the new HTE (hardware timestamping engine) subsystem
that has been in the works for a couple of months now.
The infrastructure provided allows for drivers to register as hardware
timestamp providers, while consumers will be able to request events
that they are interested in (such as GPIOs and IRQs) to be timestamped
by the hardware providers.
Note that this currently supports only one provider, but there seems
to be enough interest in this functionality and we expect to see more
drivers added once this is merged"
[ Linus Walleij mentions the Intel PMC in the Elkhart and Tiger Lake
platforms as another future timestamp provider ]
* tag 'hte/for-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
dt-bindings: timestamp: Correct id path
dt-bindings: Renamed hte directory to timestamp
hte: Uninitialized variable in hte_ts_get()
hte: Fix off by one in hte_push_ts_ns()
hte: Fix possible use-after-free in tegra_hte_test_remove()
hte: Remove unused including <linux/version.h>
MAINTAINERS: Add HTE Subsystem
hte: Add Tegra HTE test driver
tools: gpio: Add new hardware clock type
gpiolib: cdev: Add hardware timestamp clock type
gpio: tegra186: Add HTE support
gpiolib: Add HTE support
dt-bindings: Add HTE bindings
hte: Add Tegra194 HTE kernel provider
drivers: Add hardware timestamp engine (HTE) subsystem
Documentation: Add HTE subsystem guide
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git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull more Kbuild updates from Masahiro Yamada:
- Fix build regressions for parisc, csky, nios2, openrisc
- Simplify module builds for CONFIG_LTO_CLANG and CONFIG_X86_KERNEL_IBT
- Remove arch/parisc/nm, which was presumably a workaround for old
tools
- Check the odd combination of EXPORT_SYMBOL and 'static' precisely
- Make external module builds robust against "too long argument error"
- Support j, k keys for moving the cursor in nconfig
* tag 'kbuild-v5.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (25 commits)
kbuild: Allow to select bash in a modified environment
scripts: kconfig: nconf: make nconfig accept jk keybindings
modpost: use fnmatch() to simplify match()
modpost: simplify mod->name allocation
kbuild: factor out the common objtool arguments
kbuild: move vmlinux.o link to scripts/Makefile.vmlinux_o
kbuild: clean .tmp_* pattern by make clean
kbuild: remove redundant cleanups in scripts/link-vmlinux.sh
kbuild: rebuild multi-object modules when objtool is updated
kbuild: add cmd_and_savecmd macro
kbuild: make *.mod rule robust against too long argument error
kbuild: make built-in.a rule robust against too long argument error
kbuild: check static EXPORT_SYMBOL* by script instead of modpost
parisc: remove arch/parisc/nm
kbuild: do not create *.prelink.o for Clang LTO or IBT
kbuild: replace $(linked-object) with CONFIG options
kbuild: do not try to parse *.cmd files for objects provided by compiler
kbuild: replace $(if A,A,B) with $(or A,B) in scripts/Makefile.modpost
modpost: squash if...else-if in find_elf_symbol2()
modpost: reuse ARRAY_SIZE() macro for section_mismatch()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs pathname updates from Al Viro:
"Several cleanups in fs/namei.c"
* tag 'pull-18-rc1-work.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
namei: cleanup double word in comment
get rid of dead code in legitimize_root()
fs/namei.c:reserve_stack(): tidy up the call of try_to_unlazy()
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull mount handling updates from Al Viro:
"Cleanups (and one fix) around struct mount handling.
The fix is usermode_driver.c one - once you've done kern_mount(), you
must kern_unmount(); simple mntput() will end up with a leak. Several
failure exits in there messed up that way... In practice you won't hit
those particular failure exits without fault injection, though"
* tag 'pull-18-rc1-work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
move mount-related externs from fs.h to mount.h
blob_to_mnt(): kern_unmount() is needed to undo kern_mount()
m->mnt_root->d_inode->i_sb is a weird way to spell m->mnt_sb...
linux/mount.h: trim includes
uninline may_mount() and don't opencode it in fspick(2)/fsopen(2)
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull file descriptor updates from Al Viro.
- Descriptor handling cleanups
* tag 'pull-18-rc1-work.fd' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
Unify the primitives for file descriptor closing
fs: remove fget_many and fput_many interface
io_uring_enter(): don't leave f.flags uninitialized
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git://git.samba.org/sfrench/cifs-2.6
Pull cifs client fixes from Steve French:
"Nine cifs/smb3 client fixes.
Includes DFS fixes, some cleanup of leagcy SMB1 code, duplicated
message cleanup and a double free and deadlock fix"
* tag '5.19-rc-smb3-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6:
cifs: fix uninitialized pointer in error case in dfs_cache_get_tgt_share
cifs: skip trailing separators of prefix paths
cifs: update internal module number
cifs: version operations for smb20 unneeded when legacy support disabled
cifs: do not build smb1ops if legacy support is disabled
cifs: fix potential deadlock in direct reclaim
cifs: when extending a file with falloc we should make files not-sparse
cifs: remove repeated debug message on cifs_put_smb_ses()
cifs: fix potential double free during failed mount
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This fixes the build error when the system has a default bash version
which is too old to support associative array variables.
The build error log as fellowing:
linux/scripts/check-local-export: line 11: declare: -A: invalid option
declare: usage: declare [-afFirtx] [-p] [name[=value] ...]
Signed-off-by: Schspa Shi <[email protected]>
Signed-off-by: Masahiro Yamada <[email protected]>
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Make nconfig accept jk keybindings for movement in addition to arrow
keys.
Signed-off-by: Isak Ellmer <[email protected]>
Signed-off-by: Masahiro Yamada <[email protected]>
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Replace the own implementation for wildcard (glob) matching with
a function call to fnmatch().
Also, change the return type to 'bool'.
Signed-off-by: Masahiro Yamada <[email protected]>
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mod->name is set to the ELF filename with the suffix ".o" stripped.
The current code calls strdup() and free() to manipulate the string,
but a simpler approach is to pass new_module() with the name length
subtracted by 2.
Also, check if the passed filename ends with ".o" before stripping it.
The current code blindly chops the suffix:
tmp[strlen(tmp) - 2] = '\0'
It will cause buffer under-run if strlen(tmp) < 2;
Signed-off-by: Masahiro Yamada <[email protected]>
Reviewed-by: Nick Desaulniers <[email protected]>
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scripts/Makefile.build and scripts/link-vmlinux.sh have similar setups
for the objtool arguments.
It was difficult to factor out them because all the vmlinux build rules
were written in a shell script. It is somewhat tedious to touch the two
files every time a new objtool option is supported.
To reduce the code duplication, move the objtool for vmlinux.o into
scripts/Makefile.vmlinux_o. Then, move the common macros to Makefile.lib
so they are shared between Makefile.build and Makefile.vmlinux_o.
Signed-off-by: Masahiro Yamada <[email protected]>
Tested-by: Sedat Dilek <[email protected]> # LLVM-14 (x86-64)
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This is a preparation for moving the objtool rule in the next commit.
Signed-off-by: Masahiro Yamada <[email protected]>
Tested-by: Sedat Dilek <[email protected]> # LLVM-14 (x86-64)
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Change the "make clean" rule to remove all the .tmp_* files.
.tmp_objdiff is the only exception, which should be removed by
"make mrproper".
Rename the record directory of objdiff, .tmp_objdiff to .objdiff to
avoid the removal by "make clean".
Signed-off-by: Masahiro Yamada <[email protected]>
Tested-by: Sedat Dilek <[email protected]> # LLVM-14 (x86-64)
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Pull bitmap updates from Yury Norov:
- bitmap: optimize bitmap_weight() usage, from me
- lib/bitmap.c make bitmap_print_bitmask_to_buf parseable, from Mauro
Carvalho Chehab
- include/linux/find: Fix documentation, from Anna-Maria Behnsen
- bitmap: fix conversion from/to fix-sized arrays, from me
- bitmap: Fix return values to be unsigned, from Kees Cook
It has been in linux-next for at least a week with no problems.
* tag 'bitmap-for-5.19-rc1' of https://github.com/norov/linux: (31 commits)
nodemask: Fix return values to be unsigned
bitmap: Fix return values to be unsigned
KVM: x86: hyper-v: replace bitmap_weight() with hweight64()
KVM: x86: hyper-v: fix type of valid_bank_mask
ia64: cleanup remove_siblinginfo()
drm/amd/pm: use bitmap_{from,to}_arr32 where appropriate
KVM: s390: replace bitmap_copy with bitmap_{from,to}_arr64 where appropriate
lib/bitmap: add test for bitmap_{from,to}_arr64
lib: add bitmap_{from,to}_arr64
lib/bitmap: extend comment for bitmap_(from,to)_arr32()
include/linux/find: Fix documentation
lib/bitmap.c make bitmap_print_bitmask_to_buf parseable
MAINTAINERS: add cpumask and nodemask files to BITMAP_API
arch/x86: replace nodes_weight with nodes_empty where appropriate
mm/vmstat: replace cpumask_weight with cpumask_empty where appropriate
clocksource: replace cpumask_weight with cpumask_empty in clocksource.c
genirq/affinity: replace cpumask_weight with cpumask_empty where appropriate
irq: mips: replace cpumask_weight with cpumask_empty where appropriate
drm/i915/pmu: replace cpumask_weight with cpumask_empty where appropriate
arch/x86: replace cpumask_weight with cpumask_empty where appropriate
...
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull more parisc architecture updates from Helge Deller:
"A fix to prevent crash at bootup if CONFIG_SCHED_MC is enabled, and
add auto-detection of primary graphics card for framebuffer driver"
* tag 'for-5.19/parisc-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc/stifb: Keep track of hardware path of graphics card
parisc/stifb: Implement fb_is_primary_device()
parisc: fix a crash with multicore scheduler
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