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2024-04-12s390/qdio: handle deferred cc1Peter Oberparleiter1-5/+23
A deferred condition code 1 response indicates that I/O was not started and should be retried. The current QDIO implementation handles a cc1 response as I/O error, resulting in a failed QDIO setup. This can happen for example when a path verification request arrives at the same time as QDIO setup I/O is started. Fix this by retrying the QDIO setup I/O when a cc1 response is received. Note that since commit 2297791c92d0 ("s390/cio: dont unregister subchannel from child-drivers") commit 5ef1dc40ffa6 ("s390/cio: fix invalid -EBUSY on ccw_device_start") deferred cc1 responses are much more likely to occur. See the commit message of the latter for more background information. Fixes: 2297791c92d0 ("s390/cio: dont unregister subchannel from child-drivers") Reviewed-by: Alexandra Winter <[email protected]> Signed-off-by: Peter Oberparleiter <[email protected]> Signed-off-by: Alexander Gordeev <[email protected]>
2024-04-12selftests: timers: Fix abs() warning in posix_timers testJohn Stultz1-1/+1
Building with clang results in the following warning: posix_timers.c:69:6: warning: absolute value function 'abs' given an argument of type 'long long' but has parameter of type 'int' which may cause truncation of value [-Wabsolute-value] if (abs(diff - DELAY * USECS_PER_SEC) > USECS_PER_SEC / 2) { ^ So switch to using llabs() instead. Fixes: 0bc4b0cf1570 ("selftests: add basic posix timers selftests") Signed-off-by: John Stultz <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Cc: [email protected] Link: https://lore.kernel.org/r/[email protected]
2024-04-12selftests: kselftest: Mark functions that unconditionally call exit() as ↵Nathan Chancellor1-6/+9
__noreturn After commit 6d029c25b71f ("selftests/timers/posix_timers: Reimplement check_timer_distribution()"), clang warns: tools/testing/selftests/timers/../kselftest.h:398:6: warning: variable 'major' is used uninitialized whenever '||' condition is true [-Wsometimes-uninitialized] 398 | if (uname(&info) || sscanf(info.release, "%u.%u.", &major, &minor) != 2) | ^~~~~~~~~~~~ tools/testing/selftests/timers/../kselftest.h:401:9: note: uninitialized use occurs here 401 | return major > min_major || (major == min_major && minor >= min_minor); | ^~~~~ tools/testing/selftests/timers/../kselftest.h:398:6: note: remove the '||' if its condition is always false 398 | if (uname(&info) || sscanf(info.release, "%u.%u.", &major, &minor) != 2) | ^~~~~~~~~~~~~~~ tools/testing/selftests/timers/../kselftest.h:395:20: note: initialize the variable 'major' to silence this warning 395 | unsigned int major, minor; | ^ | = 0 This is a false positive because if uname() fails, ksft_exit_fail_msg() will be called, which unconditionally calls exit(), a noreturn function. However, clang does not know that ksft_exit_fail_msg() will call exit() at the point in the pipeline that the warning is emitted because inlining has not occurred, so it assumes control flow will resume normally after ksft_exit_fail_msg() is called. Make it clear to clang that all of the functions that call exit() unconditionally in kselftest.h are noreturn transitively by marking them explicitly with '__attribute__((__noreturn__))', which clears up the warning above and any future warnings that may appear for the same reason. Fixes: 6d029c25b71f ("selftests/timers/posix_timers: Reimplement check_timer_distribution()") Reported-by: John Stultz <[email protected]> Signed-off-by: Nathan Chancellor <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Acked-by: Shuah Khan <[email protected]> Cc: [email protected] Link: https://lore.kernel.org/r/20240411-mark-kselftest-exit-funcs-noreturn-v1-1-b027c948f586@kernel.org Closes: https://lore.kernel.org/all/[email protected]/
2024-04-12selftests: timers: Fix posix_timers ksft_print_msg() warningJohn Stultz1-1/+1
After commit 6d029c25b71f ("selftests/timers/posix_timers: Reimplement check_timer_distribution()") the following warning occurs when building with an older gcc: posix_timers.c:250:2: warning: format not a string literal and no format arguments [-Wformat-security] 250 | ksft_print_msg(errmsg); | ^~~~~~~~~~~~~~ Fix this up by changing it to ksft_print_msg("%s", errmsg) Fixes: 6d029c25b71f ("selftests/timers/posix_timers: Reimplement check_timer_distribution()") Signed-off-by: John Stultz <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Acked-by: Justin Stitt <[email protected]> Acked-by: Shuah Khan <[email protected]> Cc: [email protected] Link: https://lore.kernel.org/r/[email protected]
2024-04-12Merge tag 'nf-24-04-11' of ↵David S. Miller10-25/+91
git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf netfilter pull request 24-04-11 Pablo Neira Ayuso says: ==================== Netfilter fixes for net The following patchset contains Netfilter fixes for net: Patches #1 and #2 add missing rcu read side lock when iterating over expression and object type list which could race with module removal. Patch #3 prevents promisc packet from visiting the bridge/input hook to amend a recent fix to address conntrack confirmation race in br_netfilter and nf_conntrack_bridge. Patch #4 adds and uses iterate decorator type to fetch the current pipapo set backend datastructure view when netlink dumps the set elements. Patch #5 fixes removal of duplicate elements in the pipapo set backend. Patch #6 flowtable validates pppoe header before accessing it. Patch #7 fixes flowtable datapath for pppoe packets, otherwise lookup fails and pppoe packets follow classic path. ==================== Signed-off-by: David S. Miller <[email protected]>
2024-04-12iommu/amd: Change log message severityVasant Hegde1-2/+2
Use consistent log severity (pr_warn) to log all messages in SNP enable path. Suggested-by: Tom Lendacky <[email protected]> Signed-off-by: Vasant Hegde <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Joerg Roedel <[email protected]>
2024-04-12iommu/vt-d: Fix WARN_ON in iommu probe pathLu Baolu1-4/+7
Commit 1a75cc710b95 ("iommu/vt-d: Use rbtree to track iommu probed devices") adds all devices probed by the iommu driver in a rbtree indexed by the source ID of each device. It assumes that each device has a unique source ID. This assumption is incorrect and the VT-d spec doesn't state this requirement either. The reason for using a rbtree to track devices is to look up the device with PCI bus and devfunc in the paths of handling ATS invalidation time out error and the PRI I/O page faults. Both are PCI ATS feature related. Only track the devices that have PCI ATS capabilities in the rbtree to avoid unnecessary WARN_ON in the iommu probe path. Otherwise, on some platforms below kernel splat will be displayed and the iommu probe results in failure. WARNING: CPU: 3 PID: 166 at drivers/iommu/intel/iommu.c:158 intel_iommu_probe_device+0x319/0xd90 Call Trace: <TASK> ? __warn+0x7e/0x180 ? intel_iommu_probe_device+0x319/0xd90 ? report_bug+0x1f8/0x200 ? handle_bug+0x3c/0x70 ? exc_invalid_op+0x18/0x70 ? asm_exc_invalid_op+0x1a/0x20 ? intel_iommu_probe_device+0x319/0xd90 ? debug_mutex_init+0x37/0x50 __iommu_probe_device+0xf2/0x4f0 iommu_probe_device+0x22/0x70 iommu_bus_notifier+0x1e/0x40 notifier_call_chain+0x46/0x150 blocking_notifier_call_chain+0x42/0x60 bus_notify+0x2f/0x50 device_add+0x5ed/0x7e0 platform_device_add+0xf5/0x240 mfd_add_devices+0x3f9/0x500 ? preempt_count_add+0x4c/0xa0 ? up_write+0xa2/0x1b0 ? __debugfs_create_file+0xe3/0x150 intel_lpss_probe+0x49f/0x5b0 ? pci_conf1_write+0xa3/0xf0 intel_lpss_pci_probe+0xcf/0x110 [intel_lpss_pci] pci_device_probe+0x95/0x120 really_probe+0xd9/0x370 ? __pfx___driver_attach+0x10/0x10 __driver_probe_device+0x73/0x150 driver_probe_device+0x19/0xa0 __driver_attach+0xb6/0x180 ? __pfx___driver_attach+0x10/0x10 bus_for_each_dev+0x77/0xd0 bus_add_driver+0x114/0x210 driver_register+0x5b/0x110 ? __pfx_intel_lpss_pci_driver_init+0x10/0x10 [intel_lpss_pci] do_one_initcall+0x57/0x2b0 ? kmalloc_trace+0x21e/0x280 ? do_init_module+0x1e/0x210 do_init_module+0x5f/0x210 load_module+0x1d37/0x1fc0 ? init_module_from_file+0x86/0xd0 init_module_from_file+0x86/0xd0 idempotent_init_module+0x17c/0x230 __x64_sys_finit_module+0x56/0xb0 do_syscall_64+0x6e/0x140 entry_SYSCALL_64_after_hwframe+0x71/0x79 Fixes: 1a75cc710b95 ("iommu/vt-d: Use rbtree to track iommu probed devices") Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/10689 Signed-off-by: Lu Baolu <[email protected]> Link: https://lore.kernel.org/r/[email protected] Reviewed-by: Kevin Tian <[email protected]> Signed-off-by: Joerg Roedel <[email protected]>
2024-04-12iommu/vt-d: Allocate local memory for page request queueJacob Pan1-1/+1
The page request queue is per IOMMU, its allocation should be made NUMA-aware for performance reasons. Fixes: a222a7f0bb6c ("iommu/vt-d: Implement page request handling") Signed-off-by: Jacob Pan <[email protected]> Reviewed-by: Kevin Tian <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Lu Baolu <[email protected]> Signed-off-by: Joerg Roedel <[email protected]>
2024-04-12iommu/vt-d: Fix wrong use of pasid configXuchun Shang1-1/+1
The commit "iommu/vt-d: Add IOMMU perfmon support" introduce IOMMU PMU feature, but use the wrong config when set pasid filter. Fixes: 7232ab8b89e9 ("iommu/vt-d: Add IOMMU perfmon support") Signed-off-by: Xuchun Shang <[email protected]> Reviewed-by: Kan Liang <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Lu Baolu <[email protected]> Signed-off-by: Joerg Roedel <[email protected]>
2024-04-12x86/cpu/amd: Move TOPOEXT enablement into the topology parserThomas Gleixner2-15/+21
The topology rework missed that early_init_amd() tries to re-enable the Topology Extensions when the BIOS disabled them. The new parser is invoked before early_init_amd() so the re-enable attempt happens too late. Move it into the AMD specific topology parser code where it belongs. Fixes: f7fb3b2dd92c ("x86/cpu: Provide an AMD/HYGON specific topology parser") Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Ingo Molnar <[email protected]> Link: https://lore.kernel.org/r/878r1j260l.ffs@tglx
2024-04-12x86/cpu/amd: Make the NODEID_MSR union actually workThomas Gleixner1-3/+3
A system with NODEID_MSR was reported to crash during early boot without any output. The reason is that the union which is used for accessing the bitfields in the MSR is written wrongly and the resulting executable code accesses the wrong part of the MSR data. As a consequence a later division by that value results in 0 and that result is used for another division as divisor, which obviously does not work well. The magic world of C, unions and bitfields: union { u64 bita : 3, bitb : 3; u64 all; } x; x.all = foo(); a = x.bita; b = x.bitb; results in the effective executable code of: a = b = x.bita; because bita and bitb are treated as union members and therefore both end up at bit offset 0. Wrapping the bitfield into an anonymous struct: union { struct { u64 bita : 3, bitb : 3; }; u64 all; } x; works like expected. Rework the NODEID_MSR union in exactly that way to cure the problem. Fixes: f7fb3b2dd92c ("x86/cpu: Provide an AMD/HYGON specific topology parser") Reported-by: "kernelci.org bot" <[email protected]> Reported-by: Laura Nao <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Tested-by: Laura Nao <[email protected]> Link: https://lore.kernel.org/r/[email protected] Closes: https://lore.kernel.org/all/[email protected]/
2024-04-12x86/cpu/amd: Make the CPUID 0x80000008 parser correctThomas Gleixner1-6/+18
CPUID 0x80000008 ECX.cpu_nthreads describes the number of threads in the package. The parser uses this value to initialize the SMT domain level. That's wrong because cpu_nthreads does not describe the number of threads per physical core. So this needs to set the CORE domain level and let the later parsers set the SMT shift if available. Preset the SMT domain level with the assumption of one thread per core, which is correct ifrt here are no other CPUID leafs to parse, and propagate cpu_nthreads and the core level APIC bitwidth into the CORE domain. Fixes: f7fb3b2dd92c ("x86/cpu: Provide an AMD/HYGON specific topology parser") Reported-by: "kernelci.org bot" <[email protected]> Reported-by: Laura Nao <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Tested-by: Laura Nao <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2024-04-12x86/bugs: Replace CONFIG_SPECTRE_BHI_{ON,OFF} with CONFIG_MITIGATION_SPECTRE_BHIJosh Poimboeuf2-15/+4
For consistency with the other CONFIG_MITIGATION_* options, replace the CONFIG_SPECTRE_BHI_{ON,OFF} options with a single CONFIG_MITIGATION_SPECTRE_BHI option. [ mingo: Fix ] Signed-off-by: Josh Poimboeuf <[email protected]> Signed-off-by: Ingo Molnar <[email protected]> Cc: Sean Christopherson <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Nikolay Borisov <[email protected]> Link: https://lore.kernel.org/r/3833812ea63e7fdbe36bf8b932e63f70d18e2a2a.1712813475.git.jpoimboe@kernel.org
2024-04-12x86/bugs: Remove CONFIG_BHI_MITIGATION_AUTO and spectre_bhi=autoJosh Poimboeuf4-21/+1
Unlike most other mitigations' "auto" options, spectre_bhi=auto only mitigates newer systems, which is confusing and not particularly useful. Remove it. Signed-off-by: Josh Poimboeuf <[email protected]> Signed-off-by: Ingo Molnar <[email protected]> Reviewed-by: Nikolay Borisov <[email protected]> Cc: Sean Christopherson <[email protected]> Cc: Linus Torvalds <[email protected]> Link: https://lore.kernel.org/r/412e9dc87971b622bbbaf64740ebc1f140bff343.1712813475.git.jpoimboe@kernel.org
2024-04-12iommu: mtk: fix module autoloadingKrzysztof Kozlowski2-0/+2
Add MODULE_DEVICE_TABLE(), so modules could be properly autoloaded based on the alias from of_device_id table. Signed-off-by: Krzysztof Kozlowski <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Joerg Roedel <[email protected]>
2024-04-12iommu/amd: Do not enable SNP when V2 page table is enabledVasant Hegde1-10/+11
DTE[Mode]=0 is not supported when SNP is enabled in the host. That means to support SNP, IOMMU must be configured with V1 page table (See IOMMU spec [1] for the details). If user passes kernel command line to configure IOMMU domains with v2 page table (amd_iommu=pgtbl_v2) then disable SNP as the user asked by not forcing the page table to v1. [1] https://www.amd.com/content/dam/amd/en/documents/processor-tech-docs/specifications/48882_IOMMU.pdf Cc: Ashish Kalra <[email protected]> Cc: Michael Roth <[email protected]> Cc: Tom Lendacky <[email protected]> Signed-off-by: Vasant Hegde <[email protected]> Reviewed-by: Tom Lendacky <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Joerg Roedel <[email protected]>
2024-04-12iommu/amd: Fix possible irq lock inversion dependency issueVasant Hegde1-4/+7
LOCKDEP detector reported below warning: ---------------------------------------- [ 23.796949] ======================================================== [ 23.796950] WARNING: possible irq lock inversion dependency detected [ 23.796952] 6.8.0fix+ #811 Not tainted [ 23.796954] -------------------------------------------------------- [ 23.796954] kworker/0:1/8 just changed the state of lock: [ 23.796956] ff365325e084a9b8 (&domain->lock){..-.}-{3:3}, at: amd_iommu_flush_iotlb_all+0x1f/0x50 [ 23.796969] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 23.796970] (pd_bitmap_lock){+.+.}-{3:3} [ 23.796972] and interrupts could create inverse lock ordering between them. [ 23.796973] other info that might help us debug this: [ 23.796974] Chain exists of: &domain->lock --> &dev_data->lock --> pd_bitmap_lock [ 23.796980] Possible interrupt unsafe locking scenario: [ 23.796981] CPU0 CPU1 [ 23.796982] ---- ---- [ 23.796983] lock(pd_bitmap_lock); [ 23.796985] local_irq_disable(); [ 23.796985] lock(&domain->lock); [ 23.796988] lock(&dev_data->lock); [ 23.796990] <Interrupt> [ 23.796991] lock(&domain->lock); Fix this issue by disabling interrupt when acquiring pd_bitmap_lock. Note that this is temporary fix. We have a plan to replace custom bitmap allocator with IDA allocator. Fixes: 87a6f1f22c97 ("iommu/amd: Introduce per-device domain ID to fix potential TLB aliasing issue") Reviewed-by: Suravee Suthikulpanit <[email protected]> Signed-off-by: Vasant Hegde <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Joerg Roedel <[email protected]>
2024-04-12selftests/powerpc/papr-vpd: Fix missing variable initializationNathan Lynch1-1/+1
The "close handle without consuming VPD" testcase has inconsistent results because it fails to initialize the location code object it passes to ioctl() to create a VPD handle. Initialize the location code to the empty string as intended. Signed-off-by: Nathan Lynch <[email protected]> Fixes: 9118c5d32bdd ("powerpc/selftests: Add test for papr-vpd") Reported-by: Geetika Moolchandani <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://msgid.link/[email protected]
2024-04-11bcachefs: Don't use bch2_btree_node_lock_write_nofail() in btree split pathKent Overstreet1-15/+26
It turns out - btree splits happen with the rest of the transaction still locked, to avoid unnecessary restarts, which means using nofail doesn't work here - we can deadlock. Fortunately, we now have the ability to return errors here. Signed-off-by: Kent Overstreet <[email protected]>
2024-04-12amdkfd: use calloc instead of kzalloc to avoid integer overflowDave Airlie1-2/+2
This uses calloc instead of doing the multiplication which might overflow. Cc: [email protected] Signed-off-by: Dave Airlie <[email protected]>
2024-04-12Merge tag 'drm-msm-next-2024-04-11' of ↵Dave Airlie9-20/+63
https://gitlab.freedesktop.org/drm/msm into drm-fixes Fixes for v6.9 Display: - Fixes for PM refcount leak when DP goes to disconnected state and also when link training fails. This is also one of the issues found with the pm runtime series - Add missing newlines to prints in msm_fb and msm_kms - Change permissions of some dpu debugfs entries which write to const data from catalog to read-only to avoid protection faults - Fix the interface table for the catalog of X1E80100. This is an important fix to bringup DP for X1E80100. - Logging fix to print the callback symbol in the invalid IRQ message case rather than printing when its known to be NULL. - Bindings fix to add DP node as child of mdss for mdss node - Minor typo fix in DP driver API which handles port status change GPU: - fix CHRASHDUMP_READ() - fix HHB (highest bank bit) for a619 to fix UBWC corruption Signed-off-by: Dave Airlie <[email protected]> From: Rob Clark <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/CAF6AEGvFwRUcHGWva7oDeydq1PTiZMduuykCD2MWaFrT4iMGZA@mail.gmail.com
2024-04-11Merge tag 'cxl-fixes-6.9-rc4' of ↵Linus Torvalds8-145/+164
git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl Pull cxl fixes from Dave Jiang: - Fix index of Clear Event Record handles in cxl_clear_event_record() - Fix use before init of map->reg_type in cxl_decode_regblock() - Fix initialization of mbox_cmd.size_out in cxl_mem_get_records_log() - Fix CXL path access_coordinate computation: - Remove unneded check of iter in loop - Fix of retrieving of access_coordinate in PCI topology walk - Fix of incorrect region access_coordinate data calculation - Consolidate of access_coordinates attached to downstream port context - Add check to validate access_coordinate validity to prevent incorrect data being exposed via sysfs * tag 'cxl-fixes-6.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: cxl: Add checks to access_coordinate calculation to fail missing data cxl: Consolidate dport access_coordinate ->hb_coord and ->sw_coord into ->coord cxl: Fix incorrect region perf data calculation cxl: Fix retrieving of access_coordinates in PCIe path cxl: Remove checking of iter in cxl_endpoint_get_perf_coordinates() cxl/core: Fix initialization of mbox_cmd.size_out in get event cxl/core/regs: Fix usage of map->reg_type in cxl_decode_regblock() before assigned cxl/mem: Fix for the index of Clear Event Record Handle
2024-04-11fs/9p: drop inodes immediately on non-.L tooJoakim Sindholt1-0/+1
Signed-off-by: Joakim Sindholt <[email protected]> Signed-off-by: Eric Van Hensbergen <[email protected]>
2024-04-11fs/9p: Revert "fs/9p: fix dups even in uncached mode"Eric Van Hensbergen1-0/+16
This reverts commit be57855f505003c5cafff40338d5d0f23b00ba4d. It caused a regression involving duplicate inode numbers in some tester trees. The bad behavior seems to be dependent on inode reuse policy in underlying file system, so it did not trigger in my test setup. Signed-off-by: Eric Van Hensbergen <[email protected]>
2024-04-11Merge tag 'hyperv-fixes-signed-20240411' of ↵Linus Torvalds11-149/+307
git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux Pull hyperv fixes from Wei Liu: - Some cosmetic changes (Erni Sri Satya Vennela, Li Zhijian) - Introduce hv_numa_node_to_pxm_info() (Nuno Das Neves) - Fix KVP daemon to handle IPv4 and IPv6 combination for keyfile format (Shradha Gupta) - Avoid freeing decrypted memory in a confidential VM (Rick Edgecombe and Michael Kelley) * tag 'hyperv-fixes-signed-20240411' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: Drivers: hv: vmbus: Don't free ring buffers that couldn't be re-encrypted uio_hv_generic: Don't free decrypted memory hv_netvsc: Don't free decrypted memory Drivers: hv: vmbus: Track decrypted status in vmbus_gpadl Drivers: hv: vmbus: Leak pages if set_memory_encrypted() fails hv/hv_kvp_daemon: Handle IPv4 and Ipv6 combination for keyfile format hv: vmbus: Convert sprintf() family to sysfs_emit() family mshyperv: Introduce hv_numa_node_to_pxm_info() x86/hyperv: Cosmetic changes for hv_apic.c
2024-04-11ring-buffer: Only update pages_touched when a new page is touchedSteven Rostedt (Google)1-3/+3
The "buffer_percent" logic that is used by the ring buffer splice code to only wake up the tasks when there's no data after the buffer is filled to the percentage of the "buffer_percent" file is dependent on three variables that determine the amount of data that is in the ring buffer: 1) pages_read - incremented whenever a new sub-buffer is consumed 2) pages_lost - incremented every time a writer overwrites a sub-buffer 3) pages_touched - incremented when a write goes to a new sub-buffer The percentage is the calculation of: (pages_touched - (pages_lost + pages_read)) / nr_pages Basically, the amount of data is the total number of sub-bufs that have been touched, minus the number of sub-bufs lost and sub-bufs consumed. This is divided by the total count to give the buffer percentage. When the percentage is greater than the value in the "buffer_percent" file, it wakes up splice readers waiting for that amount. It was observed that over time, the amount read from the splice was constantly decreasing the longer the trace was running. That is, if one asked for 60%, it would read over 60% when it first starts tracing, but then it would be woken up at under 60% and would slowly decrease the amount of data read after being woken up, where the amount becomes much less than the buffer percent. This was due to an accounting of the pages_touched incrementation. This value is incremented whenever a writer transfers to a new sub-buffer. But the place where it was incremented was incorrect. If a writer overflowed the current sub-buffer it would go to the next one. If it gets preempted by an interrupt at that time, and the interrupt performs a trace, it too will end up going to the next sub-buffer. But only one should increment the counter. Unfortunately, that was not the case. Change the cmpxchg() that does the real switch of the tail-page into a try_cmpxchg(), and on success, perform the increment of pages_touched. This will only increment the counter once for when the writer moves to a new sub-buffer, and not when there's a race and is incremented for when a writer and its preempting writer both move to the same new sub-buffer. Link: https://lore.kernel.org/linux-trace-kernel/[email protected] Cc: [email protected] Cc: Mathieu Desnoyers <[email protected]> Fixes: 2c2b0a78b3739 ("ring-buffer: Add percentage of ring buffer full to wake up reader") Acked-by: Masami Hiramatsu (Google) <[email protected]> Signed-off-by: Steven Rostedt (Google) <[email protected]>
2024-04-11tracing: hide unused ftrace_event_id_fopsArnd Bergmann1-0/+4
When CONFIG_PERF_EVENTS, a 'make W=1' build produces a warning about the unused ftrace_event_id_fops variable: kernel/trace/trace_events.c:2155:37: error: 'ftrace_event_id_fops' defined but not used [-Werror=unused-const-variable=] 2155 | static const struct file_operations ftrace_event_id_fops = { Hide this in the same #ifdef as the reference to it. Link: https://lore.kernel.org/linux-trace-kernel/[email protected] Cc: Masami Hiramatsu <[email protected]> Cc: Oleg Nesterov <[email protected]> Cc: Mathieu Desnoyers <[email protected]> Cc: Zheng Yejian <[email protected]> Cc: Kees Cook <[email protected]> Cc: Ajay Kaher <[email protected]> Cc: Jinjie Ruan <[email protected]> Cc: Clément Léger <[email protected]> Cc: Dan Carpenter <[email protected]> Cc: "Tzvetomir Stoyanov (VMware)" <[email protected]> Fixes: 620a30e97feb ("tracing: Don't pass file_operations array to event_create_dir()") Signed-off-by: Arnd Bergmann <[email protected]> Signed-off-by: Steven Rostedt (Google) <[email protected]>
2024-04-11tracing: Fix FTRACE_RECORD_RECURSION_SIZE Kconfig entryPrasad Pandit1-1/+1
Fix FTRACE_RECORD_RECURSION_SIZE entry, replace tab with a space character. It helps Kconfig parsers to read file without error. Link: https://lore.kernel.org/linux-trace-kernel/[email protected] Cc: Masami Hiramatsu <[email protected]> Cc: Mathieu Desnoyers <[email protected]> Fixes: 773c16705058 ("ftrace: Add recording of functions that caused recursion") Signed-off-by: Prasad Pandit <[email protected]> Reviewed-by: Randy Dunlap <[email protected]> Signed-off-by: Steven Rostedt (Google) <[email protected]>
2024-04-11eventfs: Fix kernel-doc comments to functionsYang Li1-4/+10
This commit fix kernel-doc style comments with complete parameter descriptions for the lookup_file(),lookup_dir_entry() and lookup_file_dentry(). Link: https://lore.kernel.org/linux-trace-kernel/[email protected] Signed-off-by: Yang Li <[email protected]> Signed-off-by: Steven Rostedt (Google) <[email protected]>
2024-04-11smb3: fix broken reconnect when password changing on the server by allowing ↵Steve French6-0/+44
password rotation There are various use cases that are becoming more common in which password changes are scheduled on a server(s) periodically but the clients connected to this server need to stay connected (even in the face of brief network reconnects) due to mounts which can not be easily unmounted and mounted at will, and servers that do password rotation do not always have the ability to tell the clients exactly when to the new password will be effective, so add support for an alt password ("password2=") on mount (and also remount) so that we can anticipate the upcoming change to the server without risking breaking existing mounts. An alternative would have been to use the kernel keyring for this but the processes doing the reconnect do not have access to the keyring but do have access to the ses structure. Reviewed-by: Bharath SM <[email protected]> Signed-off-by: Steve French <[email protected]>
2024-04-11smb: client: instantiate when creating SFU filesPaulo Alcantara1-39/+55
In cifs_sfu_make_node(), on success, instantiate rather than leave it with dentry unhashed negative to support callers that expect mknod(2) to always instantiate. This fixes the following test case: mount.cifs //srv/share /mnt -o ...,sfu mkfifo /mnt/fifo ./xfstests/ltp/growfiles -b -W test -e 1 -u -i 0 -L 30 /mnt/fifo ... BUG: unable to handle page fault for address: 000000034cec4e58 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 1 PREEMPT SMP PTI CPU: 0 PID: 138098 Comm: growfiles Kdump: loaded Not tainted 5.14.0-436.3987_1240945149.el9.x86_64 #1 Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011 RIP: 0010:_raw_callee_save__kvm_vcpu_is_preempted+0x0/0x20 Code: e8 15 d9 61 00 e9 63 ff ff ff 41 bd ea ff ff ff e9 58 ff ff ff e8 d0 71 c0 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <48> 8b 04 fd 60 2b c1 99 80 b8 90 50 03 00 00 0f 95 c0 c3 cc cc cc RSP: 0018:ffffb6a143cf7cf8 EFLAGS: 00010206 RAX: ffff8a9bc30fb038 RBX: ffff8a9bc666a200 RCX: ffff8a9cc0260000 RDX: 00000000736f622e RSI: ffff8a9bc30fb038 RDI: 000000007665645f RBP: ffffb6a143cf7d70 R08: 0000000000001000 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000000 R12: ffff8a9bc666a200 R13: 0000559a302a12b0 R14: 0000000000001000 R15: 0000000000000000 FS: 00007fbed1dbb740(0000) GS:ffff8a9cf0000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000034cec4e58 CR3: 0000000128ec6006 CR4: 0000000000770ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 PKRU: 55555554 Call Trace: <TASK> ? show_trace_log_lvl+0x1c4/0x2df ? show_trace_log_lvl+0x1c4/0x2df ? __mutex_lock.constprop.0+0x5f7/0x6a0 ? __die_body.cold+0x8/0xd ? page_fault_oops+0x134/0x170 ? exc_page_fault+0x62/0x150 ? asm_exc_page_fault+0x22/0x30 ? _pfx_raw_callee_save__kvm_vcpu_is_preempted+0x10/0x10 __mutex_lock.constprop.0+0x5f7/0x6a0 ? __mod_memcg_lruvec_state+0x84/0xd0 pipe_write+0x47/0x650 ? do_anonymous_page+0x258/0x410 ? inode_security+0x22/0x60 ? selinux_file_permission+0x108/0x150 vfs_write+0x2cb/0x410 ksys_write+0x5f/0xe0 do_syscall_64+0x5c/0xf0 ? syscall_exit_to_user_mode+0x22/0x40 ? do_syscall_64+0x6b/0xf0 ? sched_clock_cpu+0x9/0xc0 ? exc_page_fault+0x62/0x150 entry_SYSCALL_64_after_hwframe+0x6e/0x76 Cc: [email protected] Fixes: 72bc63f5e23a ("smb3: fix creating FIFOs when mounting with "sfu" mount option") Suggested-by: Al Viro <[email protected]> Signed-off-by: Paulo Alcantara (Red Hat) <[email protected]> Signed-off-by: Steve French <[email protected]>
2024-04-11smb3: fix Open files on server counter going negativeSteve French1-2/+2
We were decrementing the count of open files on server twice for the case where we were closing cached directories. Fixes: 8e843bf38f7b ("cifs: return a single-use cfid if we did not get a lease") Cc: [email protected] Acked-by: Bharath SM <[email protected]> Signed-off-by: Steve French <[email protected]>
2024-04-11MAINTAINERS: remove myself as a Reviewer for CephJeff Layton1-2/+0
It has been a couple of years since I stepped down as CephFS maintainer. I'm not involved in any meaningful way with the project these days, so while I'm happy to help review the occasional patch, I don't need to be cc'ed on all of them. Signed-off-by: Jeff Layton <[email protected]> Signed-off-by: Ilya Dryomov <[email protected]>
2024-04-11ceph: switch to use cap_delay_lock for the unlink delay listXiubo Li3-9/+7
The same list item will be used in both cap_delay_list and cap_unlink_delay_list, so it's buggy to use two different locks to protect them. Cc: [email protected] Fixes: dbc347ef7f0c ("ceph: add ceph_cap_unlink_work to fire check_caps() immediately") Link: https://lists.ceph.io/hyperkitty/list/[email protected]/thread/AODC76VXRAMXKLFDCTK4TKFDDPWUSCN5 Reported-by: Marc Ruhmann <[email protected]> Signed-off-by: Xiubo Li <[email protected]> Reviewed-by: Ilya Dryomov <[email protected]> Tested-by: Marc Ruhmann <[email protected]> Signed-off-by: Ilya Dryomov <[email protected]>
2024-04-11KVM: Drop unused @may_block param from gfn_to_pfn_cache_invalidate_start()Sean Christopherson3-7/+4
Remove gfn_to_pfn_cache_invalidate_start()'s unused @may_block parameter, which was leftover from KVM's abandoned (for now) attempt to support guest usage of gfn_to_pfn caches. Fixes: a4bff3df5147 ("KVM: pfncache: remove KVM_GUEST_USES_PFN usage") Reported-by: Like Xu <[email protected]> Cc: Paul Durrant <[email protected]> Cc: David Woodhouse <[email protected]> Reviewed-by: Paul Durrant <[email protected]> Reviewed-by: David Woodhouse <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2024-04-11KVM: selftests: Add coverage of EPT-disabled to vmx_dirty_log_testDavid Matlack1-14/+46
Extend vmx_dirty_log_test to include accesses made by L2 when EPT is disabled. This commit adds explicit coverage of a bug caught by syzkaller, where the TDP MMU would clear D-bits instead of write-protecting SPTEs being used to map an L2, which only happens when L1 does not enable EPT, causing writes made by L2 to not be reflected in the dirty log when PML is enabled: $ ./vmx_dirty_log_test Nested EPT: disabled ==== Test Assertion Failure ==== x86_64/vmx_dirty_log_test.c:151: test_bit(0, bmap) pid=72052 tid=72052 errno=4 - Interrupted system call (stack trace empty) Page 0 incorrectly reported clean Opportunistically replace the volatile casts with {READ,WRITE}_ONCE(). Link: https://lore.kernel.org/kvm/[email protected]/ Signed-off-by: David Matlack <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2024-04-11KVM: x86/mmu: Fix and clarify comments about clearing D-bit vs. write-protectingDavid Matlack1-10/+6
Drop the "If AD bits are enabled/disabled" verbiage from the comments above kvm_tdp_mmu_clear_dirty_{slot,pt_masked}() since TDP MMU SPTEs may need to be write-protected even when A/D bits are enabled. i.e. These comments aren't technically correct. No functional change intended. Signed-off-by: David Matlack <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2024-04-11KVM: x86/mmu: Remove function comments above clear_dirty_{gfn_range,pt_masked}()David Matlack1-14/+0
Drop the comments above clear_dirty_gfn_range() and clear_dirty_pt_masked(), since each is word-for-word identical to the comment above their parent function. Leave the comment on the parent functions since they are APIs called by the KVM/x86 MMU. No functional change intended. Signed-off-by: David Matlack <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2024-04-11KVM: x86/mmu: Write-protect L2 SPTEs in TDP MMU when clearing dirty statusDavid Matlack1-5/+16
Check kvm_mmu_page_ad_need_write_protect() when deciding whether to write-protect or clear D-bits on TDP MMU SPTEs, so that the TDP MMU accounts for any role-specific reasons for disabling D-bit dirty logging. Specifically, TDP MMU SPTEs must be write-protected when the TDP MMU is being used to run an L2 (i.e. L1 has disabled EPT) and PML is enabled. KVM always disables PML when running L2, even when L1 and L2 GPAs are in the some domain, so failing to write-protect TDP MMU SPTEs will cause writes made by L2 to not be reflected in the dirty log. Reported-by: [email protected] Closes: https://syzkaller.appspot.com/bug?extid=900d58a45dcaab9e4821 Fixes: 5982a5392663 ("KVM: x86/mmu: Use kvm_ad_enabled() to determine if TDP MMU SPTEs need wrprot") Cc: [email protected] Cc: Vipin Sharma <[email protected]> Cc: Sean Christopherson <[email protected]> Signed-off-by: David Matlack <[email protected]> Link: https://lore.kernel.org/r/[email protected] [sean: massage shortlog and changelog, tweak ternary op formatting] Signed-off-by: Sean Christopherson <[email protected]>
2024-04-11KVM: x86/mmu: Precisely invalidate MMU root_role during CPUID updateSean Christopherson1-3/+3
Set kvm_mmu_page_role.invalid to mark the various MMU root_roles invalid during CPUID update in order to force a refresh, instead of zeroing out the entire role. This fixes a bug where kvm_mmu_free_roots() incorrectly thinks a root is indirect, i.e. not a TDP MMU, due to "direct" being zeroed, which in turn causes KVM to take mmu_lock for write instead of read. Note, paving over the entire role was largely unintentional, commit 7a458f0e1ba1 ("KVM: x86/mmu: remove extended bits from mmu_role, rename field") simply missed that "invalid" could be set. Fixes: 576a15de8d29 ("KVM: x86/mmu: Free TDP MMU roots while holding mmy_lock for read") Reported-by: [email protected] Closes: https://lore.kernel.org/all/[email protected] Cc: Phi Nguyen <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2024-04-11KVM: VMX: Disable LBR virtualization if the CPU doesn't support LBR callstacksSean Christopherson1-1/+9
Disable LBR virtualization if the CPU doesn't support callstacks, which were introduced in HSW (see commit e9d7f7cd97c4 ("perf/x86/intel: Add basic Haswell LBR call stack support"), as KVM unconditionally configures the perf LBR event with PERF_SAMPLE_BRANCH_CALL_STACK, i.e. LBR virtualization always fails on pre-HSW CPUs. Simply disable LBR support on such CPUs, as it has never worked, i.e. there is no risk of breaking an existing setup, and figuring out a way to performantly context switch LBRs on old CPUs is not worth the effort. Fixes: be635e34c284 ("KVM: vmx/pmu: Expose LBR_FMT in the MSR_IA32_PERF_CAPABILITIES") Cc: Mingwei Zhang <[email protected]> Cc: Jim Mattson <[email protected]> Tested-by: Mingwei Zhang <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2024-04-11perf/x86/intel: Expose existence of callback support to KVMSean Christopherson2-0/+2
Add a "has_callstack" field to the x86_pmu_lbr structure used to pass information to KVM, and set it accordingly in x86_perf_get_lbr(). KVM will use has_callstack to avoid trying to create perf LBR events with PERF_SAMPLE_BRANCH_CALL_STACK on CPUs that don't support callstacks. Reviewed-by: Mingwei Zhang <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2024-04-11KVM: VMX: Snapshot LBR capabilities during module initializationSean Christopherson3-5/+8
Snapshot VMX's LBR capabilities once during module initialization instead of calling into perf every time a vCPU reconfigures its vPMU. This will allow massaging the LBR capabilities, e.g. if the CPU doesn't support callstacks, without having to remember to update multiple locations. Opportunistically tag vmx_get_perf_capabilities() with __init, as it's only called from vmx_set_cpu_caps(). Reviewed-by: Mingwei Zhang <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Sean Christopherson <[email protected]>
2024-04-12Merge tag 'drm-xe-fixes-2024-04-11' of ↵Dave Airlie5-15/+9
https://gitlab.freedesktop.org/drm/xe/kernel into drm-fixes - Fix double display mutex initializations - Fix u32 -> u64 implicit conversions - Fix RING_CONTEXT_CONTROL not marked as masked Signed-off-by: Dave Airlie <[email protected]> From: Lucas De Marchi <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/ewvvtgcb2gonxvccws6nt6fqswoyfp4g43t5ex24vpqwtrxdzm@hgjoz5uirmxx
2024-04-12Merge tag 'drm-misc-fixes-2024-04-11' of ↵Dave Airlie17-75/+125
https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes Short summary of fixes pull: ast: - Fix soft lockup client: - Protect connector modes with mode_config mutex host1x: - Do not setup DMA for virtual addresses ivpu: - Fix deadlock in context_xa - PCI fixes - Fixes to error handling nouveau: - gsp: Fix OOB access - Fix casting panfrost: - Fix error path in MMU code qxl: - Revert "drm/qxl: simplify qxl_fence_wait" vmwgfx: - Enable DMA for SEV mappings Signed-off-by: Dave Airlie <[email protected]> From: Thomas Zimmermann <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2024-04-11Merge tag 'acpi-6.9-rc4' of ↵Linus Torvalds2-4/+7
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI fixes from Rafael Wysocki: "These fix the handling of dependencies between devices in the ACPI device enumeration code and address a _UID matching regression from the 6.8 development cycle. Specifics: - Modify the ACPI device enumeration code to avoid counting dependencies that have been met already as unmet (Hans de Goede) - Make _UID matching take the integer value of 0 into account as appropriate (Raag Jadav)" * tag 'acpi-6.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI: bus: allow _UID matching for integer zero ACPI: scan: Do not increase dep_unmet for already met dependencies
2024-04-11Merge tag 'pm-6.9-rc4' of ↵Linus Torvalds1-0/+6
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management fix from Rafael Wysocki: "Fix the suspend-to-idle core code to guarantee that timers queued on CPUs other than the one that has first left the idle state, which should expire directly after resume, will be handled (Anna-Maria Behnsen)" * tag 'pm-6.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: PM: s2idle: Make sure CPUs will wakeup directly on resume
2024-04-11Merge tag 'net-6.9-rc4' of ↵Linus Torvalds69-356/+743
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Paolo Abeni: "Including fixes from bluetooth. Current release - new code bugs: - netfilter: complete validation of user input - mlx5: disallow SRIOV switchdev mode when in multi-PF netdev Previous releases - regressions: - core: fix u64_stats_init() for lockdep when used repeatedly in one file - ipv6: fix race condition between ipv6_get_ifaddr and ipv6_del_addr - bluetooth: fix memory leak in hci_req_sync_complete() - batman-adv: avoid infinite loop trying to resize local TT - drv: geneve: fix header validation in geneve[6]_xmit_skb - drv: bnxt_en: fix possible memory leak in bnxt_rdma_aux_device_init() - drv: mlx5: offset comp irq index in name by one - drv: ena: avoid double-free clearing stale tx_info->xdpf value - drv: pds_core: fix pdsc_check_pci_health deadlock Previous releases - always broken: - xsk: validate user input for XDP_{UMEM|COMPLETION}_FILL_RING - bluetooth: fix setsockopt not validating user input - af_unix: clear stale u->oob_skb. - nfc: llcp: fix nfc_llcp_setsockopt() unsafe copies - drv: virtio_net: fix guest hangup on invalid RSS update - drv: mlx5e: Fix mlx5e_priv_init() cleanup flow - dsa: mt7530: trap link-local frames regardless of ST Port State" * tag 'net-6.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (59 commits) net: ena: Set tx_info->xdpf value to NULL net: ena: Fix incorrect descriptor free behavior net: ena: Wrong missing IO completions check order net: ena: Fix potential sign extension issue af_unix: Fix garbage collector racing against connect() net: dsa: mt7530: trap link-local frames regardless of ST Port State Revert "s390/ism: fix receive message buffer allocation" net: sparx5: fix wrong config being used when reconfiguring PCS net/mlx5: fix possible stack overflows net/mlx5: Disallow SRIOV switchdev mode when in multi-PF netdev net/mlx5e: RSS, Block XOR hash with over 128 channels net/mlx5e: Do not produce metadata freelist entries in Tx port ts WQE xmit net/mlx5e: HTB, Fix inconsistencies with QoS SQs number net/mlx5e: Fix mlx5e_priv_init() cleanup flow net/mlx5e: RSS, Block changing channels number when RXFH is configured net/mlx5: Correctly compare pkt reformat ids net/mlx5: Properly link new fs rules into the tree net/mlx5: offset comp irq index in name by one net/mlx5: Register devlink first under devlink lock net/mlx5: E-switch, store eswitch pointer before registering devlink_param ...
2024-04-11Merge tag 'scsi-fixes' of ↵Linus Torvalds5-11/+33
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI fixes from James Bottomley: "The most important fix is the sg one because the regression it fixes (spurious warning and use after final put) is already backported to stable. The next biggest impact is the target fix for wrong credentials used to load a module because it's affecting new kernels installed on selinux based distributions. The other three fixes are an obvious off by one and SATA protocol issues" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: qla2xxx: Fix off by one in qla_edif_app_getstats() scsi: hisi_sas: Modify the deadline for ata_wait_after_reset() scsi: hisi_sas: Handle the NCQ error returned by D2H frame scsi: target: Fix SELinux error when systemd-modules loads the target module scsi: sg: Avoid race in error handling & drop bogus warn
2024-04-11Merge tag 'loongarch-fixes-6.9-1' of ↵Linus Torvalds10-17/+121
git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson Pull LoongArch fixes from Huacai Chen: - make {virt, phys, page, pfn} translation work with KFENCE for LoongArch (otherwise NVMe and virtio-blk cannot work with KFENCE enabled) - update dts files for Loongson-2K series to make devices work correctly - fix a build error * tag 'loongarch-fixes-6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: LoongArch: Include linux/sizes.h in addrspace.h to prevent build errors LoongArch: Update dts for Loongson-2K2000 to support GMAC/GNET LoongArch: Update dts for Loongson-2K2000 to support PCI-MSI LoongArch: Update dts for Loongson-2K2000 to support ISA/LPC LoongArch: Update dts for Loongson-2K1000 to support ISA/LPC LoongArch: Make virt_addr_valid()/__virt_addr_valid() work with KFENCE LoongArch: Make {virt, phys, page, pfn} translation work with KFENCE mm: Move lowmem_page_address() a little later
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