- 05 Oct, 2024 11 commits
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Kent Overstreet authored
We want to check for this early so it can be reattached if necessary in check_unreachable_inodes(); better than letting it be deleted and having the children reattached, losing their filenames. Signed-off-by:Kent Overstreet <kent.overstreet@linux.dev>
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Kent Overstreet authored
link count works differently in bcachefs - it's only nonzero for files with multiple hardlinks, which means we can also avoid checking it except for files that are known to have hardlinks. That means we need a few different checks instead; in particular, we don't want fsck to delet a file that has a dirent pointing to it. Signed-off-by: -
Kent Overstreet authored
It's legal for regular files to have missing backpointers (due to hardlinks), and fsck should automatically add them, but for directories this is an error that should be flagged. Signed-off-by: -
Kent Overstreet authored
The fragmentation_lru field hasn't been needed since we reworked the LRU btrees to use the btree write buffer; previously it was used to resolve collisions, but the revised LRU btree uses the backpointer (the bucket) as part of the key. It should have been deleted at the time of the LRU rework; since it wasn't, that left places for bugs to hide, in check/repair. This fixes LRU fsck on a filesystem image helpfully provided by a user who disappeared before I could get his name for the reported-by. Signed-off-by: -
Kent Overstreet authored
check_lru_key() wasn't using write buffer updates for deleting bad lru entries - dating from before the lru btree used the btree write buffer. And when possibly flushing the btree write buffer (to make sure we're seeing a real inconsistency), we need to be using the modern bch2_btree_write_buffer_maybe_flush(). Signed-off-by: -
Kent Overstreet authored
Errors are getting marked as AUTOFIX once they've been (re)-tested and audited. Signed-off-by: -
Kent Overstreet authored
Signed-off-by: -
Kent Overstreet authored
Newly generated keys, in the transaction commit path or write path, should not be AUTOFIX; those indicate bugs that we need to fail fast for. Fixes: 5612daaf ("bcachefs: Fix fsck warnings from bkey validation") Signed-off-by:
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Kent Overstreet authored
Signed-off-by: -
Kent Overstreet authored
Ensure a copy of the lost+found inode exists in the snapshot that we're reattaching, so that we don't trigger warnings in lookup_inode_for_snapshot() later. Signed-off-by: -
Kent Overstreet authored
This fixes two different bugs: - Looser locking with the rhashtable means we need to recheck if the inode is still hashed after prepare_to_wait(), and add a corresponding wakeup after removing from the hash table. - da18ecbf ("fs: add i_state helpers") changed the bit waitqueues used for inodes, and bcachefs wasn't updated and thus broke; this updates bcachefs to the new helper. Fixes: 112d21fd ("bcachefs: switch to rhashtable for vfs inodes hash") Signed-off-by:
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- 03 Oct, 2024 3 commits
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Kent Overstreet authored
We only are applying JSET_ENTRY_TYPE_write_buffer_keys, revert path was missed. Fixes: a3581ca3 ("bcachefs: Fix BCH_TRANS_COMMIT_skip_accounting_apply") Signed-off-by:
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Kent Overstreet authored
Signed-off-by: -
Kent Overstreet authored
we're returning an error code now, not a bool Reported-by:
Dan Carpenter <dan.carpenter@linaro.org> Signed-off-by:
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- 01 Oct, 2024 1 commit
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Kent Overstreet authored
Signed-off-by:
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- 30 Sep, 2024 1 commit
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Guenter Roeck authored
Builds on big endian systems fail as follows. fs/bcachefs/bkey.h: In function 'bch2_bkey_format_add_key': fs/bcachefs/bkey.h:557:41: error: 'const struct bkey' has no member named 'bversion' The original commit only renamed the variable for little endian builds. Rename it for big endian builds as well to fix the problem. Fixes: cf49f8a8 ("bcachefs: rename version -> bversion") Cc: Kent Overstreet <kent.overstreet@linux.dev> Signed-off-by:
Guenter Roeck <linux@roeck-us.net> Signed-off-by:
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- 29 Sep, 2024 12 commits
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Linus Torvalds authored
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Linus Torvalds authored
The cpu_emergency_register_virt_callback() function is used unconditionally by the x86 kvm code, but it is declared (and defined) conditionally: #if IS_ENABLED(CONFIG_KVM_INTEL) || IS_ENABLED(CONFIG_KVM_AMD) void cpu_emergency_register_virt_callback(cpu_emergency_virt_cb *callback); ... leading to a build error when neither KVM_INTEL nor KVM_AMD support is enabled: arch/x86/kvm/x86.c: In function ‘kvm_arch_enable_virtualization’: arch/x86/kvm/x86.c:12517:9: error: implicit declaration of function ‘cpu_emergency_register_virt_callback’ [-Wimplicit-function-declaration] 12517 | cpu_emergency_register_virt_callback(kvm_x86_ops.emergency_disable_virtualization_cpu); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/x86/kvm/x86.c: In function ‘kvm_arch_disable_virtualization’: arch/x86/kvm/x86.c:12522:9: error: implicit declaration of function ‘cpu_emergency_unregister_virt_callback’ [-Wimplicit-function-declaration] 12522 | cpu_emergency_unregister_virt_callback(kvm_x86_ops.emergency_disable_virtualization_cpu); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Fix the build by defining empty helper functions the same way the old cpu_emergency_disable_virtualization() function was dealt with for the same situation. Maybe we could instead have made the call sites conditional, since the callers (kvm_arch_{en,dis}able_virtualization()) have an empty weak fallback. I'll leave that to the kvm people to argue about, this at least gets the build going for that particular config. Fixes: 590b09b1 ("KVM: x86: Register "emergency disable" callbacks when virt is enabled") Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Sean Christopherson <seanjc@google.com> Cc: Kai Huang <kai.huang@intel.com> Cc: Chao Gao <chao.gao@intel.com> Cc: Farrah Chen <farrah.chen@intel.com> Signed-off-by:Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailboxLinus Torvalds authored
Pull mailbox updates from Jassi Brar: - fix kconfig dependencies (mhu-v3, omap2+) - use devie name instead of genereic imx_mu_chan as interrupt name (imx) - enable sa8255p and qcs8300 ipc controllers (qcom) - Fix timeout during suspend mode (bcm2835) - convert to use use of_property_match_string (mailbox) - enable mt8188 (mediatek) - use devm_clk_get_enabled helpers (spreadtrum) - fix device-id typo (rockchip) * tag 'mailbox-v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox: mailbox, remoteproc: omap2+: fix compile testing dt-bindings: mailbox: qcom-ipcc: Document QCS8300 IPCC dt-bindings: mailbox: qcom-ipcc: document the support for SA8255p dt-bindings: mailbox: mtk,adsp-mbox: Add compatible for MT8188 mailbox: Use of_property_match_string() instead of open-coding mailbox: bcm2835: Fix timeout during suspend mode mailbox: sprd: Use devm_clk_get_enabled() helpers mailbox: rockchip: fix a typo in module autoloading mailbox: imx: use device name in interrupt name mailbox: ARM_MHU_V3 should depend on ARM64
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Linus Torvalds authored
Merge tag 'i2c-for-6.12-rc1-additional_fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c fixes from Wolfram Sang: - fix DesignWare driver ENABLE-ABORT sequence, ensuring ABORT can always be sent when needed - check for PCLK in the SynQuacer controller as an optional clock, allowing ACPI to directly provide the clock rate - KEBA driver Kconfig dependency fix - fix XIIC driver power suspend sequence * tag 'i2c-for-6.12-rc1-additional_fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: xiic: Fix pm_runtime_set_suspended() with runtime pm enabled i2c: keba: I2C_KEBA should depend on KEBA_CP500 i2c: synquacer: Deal with optional PCLK correctly i2c: designware: fix controller is holding SCL low while ENABLE bit is disabled
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git://git.infradead.org/users/hch/dma-mappingLinus Torvalds authored
Pull dma-mapping fix from Christoph Hellwig: - handle chained SGLs in the new tracing code (Christoph Hellwig) * tag 'dma-mapping-6.12-2024-09-29' of git://git.infradead.org/users/hch/dma-mapping: dma-mapping: fix DMA API tracing for chained scatterlists
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds authored
Pull more SCSI updates from James Bottomley: "These are mostly minor updates. There are two drivers (lpfc and mpi3mr) which missed the initial pull and a core change to retry a start/stop unit which affect suspend/resume" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (32 commits) scsi: lpfc: Update lpfc version to 14.4.0.5 scsi: lpfc: Support loopback tests with VMID enabled scsi: lpfc: Revise TRACE_EVENT log flag severities from KERN_ERR to KERN_WARNING scsi: lpfc: Ensure DA_ID handling completion before deleting an NPIV instance scsi: lpfc: Fix kref imbalance on fabric ndlps from dev_loss_tmo handler scsi: lpfc: Restrict support for 32 byte CDBs to specific HBAs scsi: lpfc: Update phba link state conditional before sending CMF_SYNC_WQE scsi: lpfc: Add ELS_RSP cmd to the list of WQEs to flush in lpfc_els_flush_cmd() scsi: mpi3mr: Update driver version to 8.12.0.0.50 scsi: mpi3mr: Improve wait logic while controller transitions to READY state scsi: mpi3mr: Update MPI Headers to revision 34 scsi: mpi3mr: Use firmware-provided timestamp update interval scsi: mpi3mr: Enhance the Enable Controller retry logic scsi: sd: Fix off-by-one error in sd_read_block_characteristics() scsi: pm8001: Do not overwrite PCI queue mapping scsi: scsi_debug: Remove a useless memset() scsi: pmcraid: Convert comma to semicolon scsi: sd: Retry START STOP UNIT commands scsi: mpi3mr: A performance fix scsi: ufs: qcom: Update MODE_MAX cfg_bw value ...
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git://evilpiepirate.org/bcachefsLinus Torvalds authored
Pull more bcachefs updates from Kent Overstreet: "Assorted minor syzbot fixes, and for bigger stuff: Fix two disk accounting rewrite bugs: - Disk accounting keys use the version field of bkey so that journal replay can tell which updates have been applied to the btree. This is set in the transaction commit path, after we've gotten our journal reservation (and our time ordering), but the BCH_TRANS_COMMIT_skip_accounting_apply flag that journal replay uses was incorrectly skipping this for new updates generated prior to journal replay. This fixes the underlying cause of an assertion pop in disk_accounting_read. - A couple of fixes for disk accounting + device removal. Checking if acocunting replicas entries were marked in the superblock was being done at the wrong point, when deltas in the journal could still zero them out, and then additionally we'd try to add a missing replicas entry to the superblock without checking if it referred to an invalid (removed) device. A whole slew of repair fixes: - fix infinite loop in propagate_key_to_snapshot_leaves(), this fixes an infinite loop when repairing a filesystem with many snapshots - fix incorrect transaction restart handling leading to occasional "fsck counted ..." warnings - fix warning in __bch2_fsck_err() for bkey fsck errors - check_inode() in fsck now correctly checks if the filesystem was clean - there shouldn't be pending logged ops if the fs was clean, we now check for this - remove_backpointer() doesn't remove a dirent that doesn't actually point to the inode - many more fsck errors are AUTOFIX" * tag 'bcachefs-2024-09-28' of git://evilpiepirate.org/bcachefs: (35 commits) bcachefs: check_subvol_path() now prints subvol root inode bcachefs: remove_backpointer() now checks if dirent points to inode bcachefs: dirent_points_to_inode() now warns on mismatch bcachefs: Fix lost wake up bcachefs: Check for logged ops when clean bcachefs: BCH_FS_clean_recovery bcachefs: Convert disk accounting BUG_ON() to WARN_ON() bcachefs: Fix BCH_TRANS_COMMIT_skip_accounting_apply bcachefs: Check for accounting keys with bversion=0 bcachefs: rename version -> bversion bcachefs: Don't delete unlinked inodes before logged op resume bcachefs: Fix BCH_SB_ERRS() so we can reorder bcachefs: Fix fsck warnings from bkey validation bcachefs: Move transaction commit path validation to as late as possible bcachefs: Fix disk accounting attempting to mark invalid replicas entry bcachefs: Fix unlocked access to c->disk_sb.sb in bch2_replicas_entry_validate() bcachefs: Fix accounting read + device removal bcachefs: bch_accounting_mode bcachefs: fix transaction restart handling in check_extents(), check_dirents() bcachefs: kill inode_walker_entry.seen_this_pos ... -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Ingo Molnar: "Fix TDX MMIO #VE fault handling, and add two new Intel model numbers for 'Pantherlake' and 'Diamond Rapids'" * tag 'x86-urgent-2024-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpu: Add two Intel CPU model numbers x86/tdx: Fix "in-kernel MMIO" check
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull locking updates from Ingo Molnar: "lockdep: - Fix potential deadlock between lockdep and RCU (Zhiguo Niu) - Use str_plural() to address Coccinelle warning (Thorsten Blum) - Add debuggability enhancement (Luis Claudio R. Goncalves) static keys & calls: - Fix static_key_slow_dec() yet again (Peter Zijlstra) - Handle module init failure correctly in static_call_del_module() (Thomas Gleixner) - Replace pointless WARN_ON() in static_call_module_notify() (Thomas Gleixner) <linux/cleanup.h>: - Add usage and style documentation (Dan Williams) rwsems: - Move is_rwsem_reader_owned() and rwsem_owner() under CONFIG_DEBUG_RWSEMS (Waiman Long) atomic ops, x86: - Redeclare x86_32 arch_atomic64_{add,sub}() as void (Uros Bizjak) - Introduce the read64_nonatomic macro to x86_32 with cx8 (Uros Bizjak)" Signed-off-by:Ingo Molnar <mingo@kernel.org> * tag 'locking-urgent-2024-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: locking/rwsem: Move is_rwsem_reader_owned() and rwsem_owner() under CONFIG_DEBUG_RWSEMS jump_label: Fix static_key_slow_dec() yet again static_call: Replace pointless WARN_ON() in static_call_module_notify() static_call: Handle module init failure correctly in static_call_del_module() locking/lockdep: Simplify character output in seq_line() lockdep: fix deadlock issue between lockdep and rcu lockdep: Use str_plural() to fix Coccinelle warning cleanup: Add usage and style documentation lockdep: suggest the fix for "lockdep bfs error:-1" on print_bfs_bug locking/atomic/x86: Redeclare x86_32 arch_atomic64_{add,sub}() as void locking/atomic/x86: Introduce the read64_nonatomic macro to x86_32 with cx8
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git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linuxLinus Torvalds authored
Pull coccinelle updates from Julia Lawall: "Extend string_choices.cocci to use more available helpers Ten patches from Hongbo Li extending string_choices.cocci with the complete set of functions offered by include/linux/string_choices.h. One patch from myself reducing the number of redundant cases that are checked by Coccinelle, giving a small performance improvement" * tag 'cocci-for-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux: Reduce Coccinelle choices in string_choices.cocci coccinelle: Remove unnecessary parentheses for only one possible change. coccinelle: Add rules to find str_yes_no() replacements coccinelle: Add rules to find str_on_off() replacements coccinelle: Add rules to find str_write_read() replacements coccinelle: Add rules to find str_read_write() replacements coccinelle: Add rules to find str_enable{d}_disable{d}() replacements coccinelle: Add rules to find str_lo{w}_hi{gh}() replacements coccinelle: Add rules to find str_hi{gh}_lo{w}() replacements coccinelle: Add rules to find str_false_true() replacements coccinelle: Add rules to find str_true_false() replacements
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Linus Torvalds authored
Merge tag 'linux_kselftest-next-6.12-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kselftest fix from Shuah Khan: "One urgent fix to vDSO as automated testing is failing due to this bug" * tag 'linux_kselftest-next-6.12-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests: vDSO: align stack for O2-optimized memcpy
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Ingo Molnar authored
Merge all pending locking commits into a single branch. Signed-off-by:
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- 28 Sep, 2024 12 commits
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Julia Lawall authored
The isomorphism neg_if_exp negates the test of a ?: conditional, making it unnecessary to have an explicit case for a negated test with the branches inverted. At the same time, we can disable neg_if_exp in cases where a different API function may be more suitable for a negated test. Finally, in the non-patch cases, E matches an expression with parentheses around it, so there is no need to mention () explicitly in the pattern. The () are still needed in the patch cases, because we want to drop them, if they are present. Signed-off-by:Julia Lawall <Julia.Lawall@inria.fr>
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Hongbo Li authored
The parentheses are only needed if there is a disjunction, ie a set of possible changes. If there is only one pattern, we can remove these parentheses. Just like the format: - x + y not: ( - x + y ) Signed-off-by:
Hongbo Li <lihongbo22@huawei.com> Signed-off-by:
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Hongbo Li authored
As other rules done, we add rules for str_yes_no() to check the relative opportunities. Signed-off-by:
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Hongbo Li authored
As other rules done, we add rules for str_on_off() to check the relative opportunities. Signed-off-by:
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Hongbo Li authored
As other rules done, we add rules for str_write_read() to check the relative opportunities. Signed-off-by:
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Hongbo Li authored
As other rules done, we add rules for str_read_write() to check the relative opportunities. Signed-off-by:
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Hongbo Li authored
As other rules done, we add rules for str_enable{d}_ disable{d}() to check the relative opportunities. Signed-off-by: -
Hongbo Li authored
As other rules done, we add rules for str_lo{w}_hi{gh}() to check the relative opportunities. Signed-off-by: -
Hongbo Li authored
As other rules done, we add rules for str_hi{gh}_lo{w}() to check the relative opportunities. Signed-off-by: -
Hongbo Li authored
As done with str_true_false(), add checks for str_false_true() opportunities. A simple test can find over 9 cases currently exist in the tree. Signed-off-by:
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Hongbo Li authored
After str_true_false() has been introduced in the tree, we can add rules for finding places where str_true_false() can be used. A simple test can find over 10 locations. Signed-off-by:
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull x86 kvm updates from Paolo Bonzini: "x86: - KVM currently invalidates the entirety of the page tables, not just those for the memslot being touched, when a memslot is moved or deleted. This does not traditionally have particularly noticeable overhead, but Intel's TDX will require the guest to re-accept private pages if they are dropped from the secure EPT, which is a non starter. Actually, the only reason why this is not already being done is a bug which was never fully investigated and caused VM instability with assigned GeForce GPUs, so allow userspace to opt into the new behavior. - Advertise AVX10.1 to userspace (effectively prep work for the "real" AVX10 functionality that is on the horizon) - Rework common MSR handling code to suppress errors on userspace accesses to unsupported-but-advertised MSRs This will allow removing (almost?) all of KVM's exemptions for userspace access to MSRs that shouldn't exist based on the vCPU model (the actual cleanup is non-trivial future work) - Rework KVM's handling of x2APIC ICR, again, because AMD (x2AVIC) splits the 64-bit value into the legacy ICR and ICR2 storage, whereas Intel (APICv) stores the entire 64-bit value at the ICR offset - Fix a bug where KVM would fail to exit to userspace if one was triggered by a fastpath exit handler - Add fastpath handling of HLT VM-Exit to expedite re-entering the guest when there's already a pending wake event at the time of the exit - Fix a WARN caused by RSM entering a nested guest from SMM with invalid guest state, by forcing the vCPU out of guest mode prior to signalling SHUTDOWN (the SHUTDOWN hits the VM altogether, not the nested guest) - Overhaul the "unprotect and retry" logic to more precisely identify cases where retrying is actually helpful, and to harden all retry paths against putting the guest into an infinite retry loop - Add support for yielding, e.g. to honor NEED_RESCHED, when zapping rmaps in the shadow MMU - Refactor pieces of the shadow MMU related to aging SPTEs in prepartion for adding multi generation LRU support in KVM - Don't stuff the RSB after VM-Exit when RETPOLINE=y and AutoIBRS is enabled, i.e. when the CPU has already flushed the RSB - Trace the per-CPU host save area as a VMCB pointer to improve readability and cleanup the retrieval of the SEV-ES host save area - Remove unnecessary accounting of temporary nested VMCB related allocations - Set FINAL/PAGE in the page fault error code for EPT violations if and only if the GVA is valid. If the GVA is NOT valid, there is no guest-side page table walk and so stuffing paging related metadata is nonsensical - Fix a bug where KVM would incorrectly synthesize a nested VM-Exit instead of emulating posted interrupt delivery to L2 - Add a lockdep assertion to detect unsafe accesses of vmcs12 structures - Harden eVMCS loading against an impossible NULL pointer deref (really truly should be impossible) - Minor SGX fix and a cleanup - Misc cleanups Generic: - Register KVM's cpuhp and syscore callbacks when enabling virtualization in hardware, as the sole purpose of said callbacks is to disable and re-enable virtualization as needed - Enable virtualization when KVM is loaded, not right before the first VM is created Together with the previous change, this simplifies a lot the logic of the callbacks, because their very existence implies virtualization is enabled - Fix a bug that results in KVM prematurely exiting to userspace for coalesced MMIO/PIO in many cases, clean up the related code, and add a testcase - Fix a bug in kvm_clear_guest() where it would trigger a buffer overflow _if_ the gpa+len crosses a page boundary, which thankfully is guaranteed to not happen in the current code base. Add WARNs in more helpers that read/write guest memory to detect similar bugs Selftests: - Fix a goof that caused some Hyper-V tests to be skipped when run on bare metal, i.e. NOT in a VM - Add a regression test for KVM's handling of SHUTDOWN for an SEV-ES guest - Explicitly include one-off assets in .gitignore. Past Sean was completely wrong about not being able to detect missing .gitignore entries - Verify userspace single-stepping works when KVM happens to handle a VM-Exit in its fastpath - Misc cleanups" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (127 commits) Documentation: KVM: fix warning in "make htmldocs" s390: Enable KVM_S390_UCONTROL config in debug_defconfig selftests: kvm: s390: Add VM run test case KVM: SVM: let alternatives handle the cases when RSB filling is required KVM: VMX: Set PFERR_GUEST_{FINAL,PAGE}_MASK if and only if the GVA is valid KVM: x86/mmu: Use KVM_PAGES_PER_HPAGE() instead of an open coded equivalent KVM: x86/mmu: Add KVM_RMAP_MANY to replace open coded '1' and '1ul' literals KVM: x86/mmu: Fold mmu_spte_age() into kvm_rmap_age_gfn_range() KVM: x86/mmu: Morph kvm_handle_gfn_range() into an aging specific helper KVM: x86/mmu: Honor NEED_RESCHED when zapping rmaps and blocking is allowed KVM: x86/mmu: Add a helper to walk and zap rmaps for a memslot KVM: x86/mmu: Plumb a @can_yield parameter into __walk_slot_rmaps() KVM: x86/mmu: Move walk_slot_rmaps() up near for_each_slot_rmap_range() KVM: x86/mmu: WARN on MMIO cache hit when emulating write-protected gfn KVM: x86/mmu: Detect if unprotect will do anything based on invalid_list KVM: x86/mmu: Subsume kvm_mmu_unprotect_page() into the and_retry() version KVM: x86: Rename reexecute_instruction()=>kvm_unprotect_and_retry_on_failure() KVM: x86: Update retry protection fields when forcing retry on emulation failure KVM: x86: Apply retry protection to "unprotect on failure" path KVM: x86: Check EMULTYPE_WRITE_PF_TO_SP before unprotecting gfn ...
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