| #
67f8bc84 |
| 01-Sep-2026 |
Maxime Ripard <mripard@kernel.org> |
Merge drm/drm-fixes into drm-misc-fixes
Let's start the 7.3 drm-misc-fixes cycle.
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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Revision tags: v7.3-rc1 |
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| #
7bb6284a |
| 25-Aug-2026 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm updates from Paolo Bonzini: "ARM64:
- Add support for 'slot' based PMU events, paired with new UAPI that compels
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm updates from Paolo Bonzini: "ARM64:
- Add support for 'slot' based PMU events, paired with new UAPI that compels the user to select a specific PMU implementation
- Lazy save/restore of vCPU state for pKVM, along with various fixes and cleanups to the management of vCPU state between the untrusted host and pKVM hypervisor
- Disable traps of EL1 registers for nested hypervisors when FEAT_NV2p1 is present, guaranteeing that EL2-specific register bits are stateful in the EL1 counterpart
- Leverage FEAT_NV3 to avoid unnecessary ERET/TLBI traps when the scope of those instructions remains 'in host' (i.e. L1 kernel/userspace)
- Pile of fixes for the management of the VNCR pseudo-TLB, such as under-invalidations and races with concurrent TLBIs on other vCPUs
- Consolidate the non-protected and pKVM view of ICH_VTR_EL2 to a runtime-patched constant, allowing the same data to be shared with pKVM prior to dropping host privileges
- Considerable pile of LLM-assisted fixes around the shop but mostly in the VGIC, our in-kernel generator of bugs (and sometimes interrupts)
LoongArch:
- Advertise already-supported capabilities
- Some bug fixes about timer and MMIO
- Some hardening about interrupt injection
- Replace kvm_err() with kvm_pr_unimpl()
- Add FPU/LSX/LASX test cases for selftests
RISC-V:
- Svadu/Zicfiss/Zicfilp FWFT support for Guest
- Use try_cmpxchg for IMSIC MRIF RMW
- More arch-specific tracepoints in KVM RISC-V
- Eager page splitting when enabling dirty logging
- Optimize hfence request handling for SMP Guests
- Improve dirty log clearing by skipping zero bits in mask
- Guard HFENCE range loops against overflow
- CPU PM notifiers in KVM RISC-V for non-retentive idle states
- Fix kernel-mode vector context save/restore for Guest
s390:
- Fixes for vfio-ap
- Fixes for the gmap rework
- Fixes for vsie
- AI triggered fixes all over
- diag9c tracing
- code move preparation for the additional arm64 support
- enable CONTEXT_ANALYSIS
x86:
- Perform spring cleaning on x86.{c,h} and asm/kvm_host.h, by adding regs.c (the kvm_cache_regs.h => regs.h is already applied) and msrs.{c,h}, and moving relevant code out of x86.c
- Split kvm_mmu in three parts, respectively to describe the format of page tables, walking the guest page tables and building the page tables. Always use the same page table walker kvm->arch.gva_walk as the entry point to convert a guest's virtual address, where the previous code used two different kvm_mmu structs depending on whether the walk included nested EPT/NPT or not. Make page fault vmexits reuse the permission checking machinery that is used for guest page faults. This is both a cleanup and a baby step towards supporting XS/XU memory permissions
- Document some of the "fun" gotchas with the APIC base when creating IRQCHIPs on x86
- Remove a defunct masterclock update from kvm_xen_shared_info_init(). It could result in incorrect kvmclock due to triggering an unnecessary switch to/from masterclock mode
- Skip Xen runstate time updates if time has effectively gone backwards, so that the guest doesn't report 100% steal time for a very, very long time
- Drop KVM's runtime updates of the Xen PV timing CPUID leaf, as KVM was updating the wrong sub-leaf, and upstream KVM will soon provide all the information needed by userspace to populate the CPUID field itself
- Fix a bug where KVM would walk a newly created rmap without holding the rmap lock (or mmu_lock) during aging
- Fix a bug where aging TDP MMU SPTEs could clobber FROZEN SPTEs
- Fix a variety of #DB priority bugs
- Fix a class of races related to enabling Hyper-V emulation on a vCPU after the vCPU is visible to the rest of KVM
- Use static calls for nested virtualization ops
- Move more KVM-internal code out of x86's kvm_host.h
- Enumerate support for a variety of Zhaoxin instructions that don't require explicit virtualization
- Fix missing EFER validation bugs, including in the KVM_SET_SREGS* path
- Harden kvm_vcpu_map() against double-mapping and thus leaking references
- Misc fixes and cleanups, e.g. for largely benign syzkaller splats
x86 (Intel):
- Zero a vCPU's entry in VMX's Posted Interrupt Descriptor table used for IPI virtualization when the vCPU is freed, to fix a use-after-free where hardware will write to a freed vCPU's PID
- Service local TLB flushes on a failed nested VM-Enter to fix a bug where KVM could miss a TLB on a future, successful VM-Enter with the same L2 VPID
- Cap the maximum value shoved into the VMX Preemption Timer to workaround an erratum that affects all existing Intel CPUs that support CPUID 0x15
- Fix VPID virtualization bugs where KVM would fail to flush hardware TLBs
- Harden the TDX "populate" ioctls against bad input, and to prepare for supporting in-place private<=>shared conversion
x86 (AMD):
- Forcefully invalidate SNP VMSA pages if their backing guest_memfd page is zapped/invalidated, e.g. due to a PUNCH_HOLE in response to a Page-State Change request
- Remove a dying VM from the GA Log notifier list before the VM is actually destroyed, to fix a potential use-after-free
- While FOLL_WRITE was needed in the past to trigger CoW unsharing, nowadays FOLL_LONGTERM does that already even without FOLL_WRITE, and in fact, get_user_pages() actually disallows FOLL_WRITE together with FOLL_LONGTERM. So don't pass FOLL_WRITE when registering encrypted memory regions, i.e. when pinning SEV/SEV-ES guest memory, to fix a regression with file-backed memory introduced by KVM's (correct) usage of long-term pins
(This was reviewed by mm maintainers; for more information, see commit ee1a586dd1fa "KVM: SEV: Drop FOLL_WRITE for encrypted region registration")
- Allocate full pages for SEV/SEV-ES {DE,EN}CRYPT ops on SNP-enabled hosts to fix a data corruption issue due to the PSP driver assigning to-be-written pages to firmware (as required by the SNP specs)
- Unconditionally intercept ICBEP so that KVM generates the correct guest RIP when handling an ICEBP-induced TASK_SWITCH #VMEXIT
- Harden the SNP "populate" ioctls against bad input, and to prepare for supporting in-place private<=>shared conversion
Generic:
- Remove kvm_debugfs_dir if kvm_init() fails after creating KVM's debugfs
- Add a per-VM bitmap to track which vCPU IDs have been "claimed" but for which the vCPU isn't yet online, and use the bitmap to reject duplicate IDs before calling into arch code. This allows arch code to consume vcpu_id without having to worry about cross-vCPU clobbering (at least s390 and x86 have had related bugs)
- Rework the so called "prepare" and "invalidate" guest_memfd hooks to prepare for in-place private<=>shared conversion, and clean up a few warts along the way
Selftests:
- Automatically allocate a full page for L2 guest stacks on x86 instead of requiring test-specific L1 guest code to carve out a portion of the L1 stack for L2 usage, and to ensure the L2 stack also adheres to the x86-64 calling convention ABI
- Add a selftest to verify {Guest,Host}-Only behavior in x86's mediated PMU
- Clean up nested SVM's handling of GPRs on L2<=>L1 transitions, reuse the functionality for nested VMX, and drop the ucall hack that was fudging around the lack of GPR switching on nVMX
- Add a stress test to verify KVM doesn't clobber/drop #PF state, e.g. CR2, across save/restore, including when L2 is active
- Add a test to verify KVM_CREATE_VM accepts exactly what is reported by KVM_CAP_VM_TYPES
- Misc selftests fixes and cleanups
- Fix several issues with seeding the pRNG, and rework the pRNG APIs to that the pRNG can be sanely used in host code, not just guest code
- Add an IRQ test to validate virtual IRQ deliverty for IRQs wired up via KVM_IRQFD + KVM_SET_GSI_ROUTING, with optional support for triggering IRQs via writes to an assigned VFIO device
- Add syscall wrappers to assert success on a variety of pthreads and CPU affinity APIs
- Set vCPU pthread affinity as early as possible to reduce contention issues that were surfaced by PREEMPT_LAZY, which result in runtimes of over a minute on large hosts, versus the expected ~5 seconds
- Rework the PMU counters test to run each testcase using a single VM with many vCPUs for each sub-testcase, instead of using a unique VM for each sub-testcase. This cuts the runtime by ~20x
Miscellaneous:
- MAINTAINERS updates for vfio-ap, guest_memfd, kvm-x86. Mostly representing the status quo more accurately, but also... welcome David Hildenbrand as guest_memfd reviewer!"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (413 commits) KVM: arm64: Validate GICv5 timer PPIs before claiming ownership KVM: arm64: vgic: Reject out-of-range GICv5 PPI IDs KVM: arm64: vgic: Prevent speculative SPI array underflow KVM: arm64: vgic: Free gic_kvm_info on initialization failure KVM: arm64: Avoid mismatched accesses to 'struct kvm_nvhe_init_params' s390/vfio-ap: Fix NULL deref in status_show() during queue probe s390/vfio-ap: Fix hot-unplug skipped when last AP adapter or domain removed s390/vfio-ap: fix potential use of uninitialized apm_filtered bitmap s390/vfio-ap: Fix control domain removal in vfio_ap_mdev_cfg_remove s390/vfio-ap: Fix required lock not held during update of ap_matrix_mdev object s390/vfio-ap: Fix missing lock required to access list of ap_matrix_mdev objects s390/vfio-ap: Fix dereference matrix_mdev->kvm without checking for NULL s390/vfio-ap: Fix stale do_remove flag across iterations in vfio_ap_mdev_cfg_remove RISC-V: KVM: fix vcpu vector context handling for kernel-mode vector riscv: vector: allow non-preemptible kernel-mode vector with IRQs off riscv: vector: refactor riscv_v_start_kernel_context KVM: s390: gmap: Make prefix handling optional KVM: s390: gmap: Make CMMA optional KVM: s390: gmap: Make storage keys optional KVM: s390: Prepare gmap for a second KVM implementation ...
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1526a27e |
| 18-Aug-2026 |
Paolo Bonzini <pbonzini@redhat.com> |
Merge tag 'kvm-s390-next-7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD
KVM: s390: Features and Fixes for 7.3
- merged kvms390/master to pick up additional fixes th
Merge tag 'kvm-s390-next-7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD
KVM: s390: Features and Fixes for 7.3
- merged kvms390/master to pick up additional fixes that came too late for 7.2 - Fixes for vfio-ap - Fixes for the gmap rework - Fixes for vsie - AI triggered fixes all over - diag9c tracing - code move preparation for the additional arm64 support - enable CONTEXT_ANALYSIS - update to vfio maintainer file location
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Revision tags: v7.2, v7.2-rc7, v7.2-rc6, v7.2-rc5, v7.2-rc4, v7.2-rc3, v7.2-rc2 |
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1b09c13c |
| 02-Jul-2026 |
Steffen Eiden <seiden@linux.ibm.com> |
KVM: s390: Move s390 kvm code into a subdirectory
Move all the code required to run s390 KVM guests on s390 to a s390 subdirectory. Move gmap related code into a gmap directory to later share gmap c
KVM: s390: Move s390 kvm code into a subdirectory
Move all the code required to run s390 KVM guests on s390 to a s390 subdirectory. Move gmap related code into a gmap directory to later share gmap code between KVM implementations.
Update S390 VFIO-PCI MAINTAINERS filepath.
No functional change.
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
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64e9b554 |
| 03-Aug-2026 |
Steffen Eiden <seiden@linux.ibm.com> |
KVM: s390: Rename kvm-s390.{c,h} to s390.{c,h}
Rename kvm-s390.c to s390.c and kvm-s390.h to s390.h for consistency with the new directory structure. Update all include statements and simplify Makef
KVM: s390: Rename kvm-s390.{c,h} to s390.{c,h}
Rename kvm-s390.c to s390.c and kvm-s390.h to s390.h for consistency with the new directory structure. Update all include statements and simplify Makefile ccflags from explicit paths to -I$(src).
No functional change.
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
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Revision tags: v7.2-rc1, v7.1, v7.1-rc7, v7.1-rc6, v7.1-rc5 |
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5c8cbca2 |
| 21-May-2026 |
Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> |
Merge branch '20260507-ubwc-rework-v4-4-c19593d20c1d@oss.qualcomm.com' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into HEAD
Merge the branch with the soc/qcom changes, required fo
Merge branch '20260507-ubwc-rework-v4-4-c19593d20c1d@oss.qualcomm.com' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into HEAD
Merge the branch with the soc/qcom changes, required for the next UBWC patches.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
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Revision tags: v7.1-rc4 |
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8edf8b09 |
| 12-May-2026 |
Joonas Lahtinen <joonas.lahtinen@linux.intel.com> |
Merge drm/drm-next into drm-intel-gt-next
Backmerging to pull in commit 5401b9adebc9 ("i915: don't use a vma that didn't match the context VM") to revert it.
Signed-off-by: Joonas Lahtinen <joonas.
Merge drm/drm-next into drm-intel-gt-next
Backmerging to pull in commit 5401b9adebc9 ("i915: don't use a vma that didn't match the context VM") to revert it.
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
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Revision tags: v7.1-rc3, v7.1-rc2, v7.1-rc1, v7.0 |
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1655f689 |
| 12-Apr-2026 |
Thomas Gleixner <tglx@kernel.org> |
Merge tag 'timers-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/daniel.lezcano/linux into timers/clocksource
- Added the DT bindings for the compatible string 'fsl,imx25-epit' (Fr
Merge tag 'timers-v7.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/daniel.lezcano/linux into timers/clocksource
- Added the DT bindings for the compatible string 'fsl,imx25-epit' (Frank Li)
- Made the rttm_cs variable static for the rtl otto timer driver (Krzysztof Kozlowski)
- Fixed error return code handling in the sun5i timer driver (Chen Ni)
- Made the timer-of and the mmio code compatible with modules (Daniel Lezcano)
Link: https://lore.kernel.org/151feae1-39ba-4abd-a9f9-9bff377a2cd8@oss.qualcomm.com
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f4b369c6 |
| 20-Apr-2026 |
Dmitry Torokhov <dmitry.torokhov@gmail.com> |
Merge branch 'next' into for-linus
Prepare input updates for 7.1 merge window.
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Revision tags: v7.0-rc7, v7.0-rc6, v7.0-rc5, v7.0-rc4 |
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0421ccdf |
| 12-Mar-2026 |
Dmitry Torokhov <dmitry.torokhov@gmail.com> |
Merge tag 'v7.0-rc3' into next
Sync up with the mainline to brig up the latest changes, specifically changes to ALPS driver.
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3e9e952b |
| 20-Apr-2026 |
Petr Mladek <pmladek@suse.com> |
Merge branch 'for-7.1-printf-kunit-build' into for-linus
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42d3b66d |
| 12-Mar-2026 |
Matthew Brost <matthew.brost@intel.com> |
Merge drm/drm-next into drm-xe-next
Backmerging to bring in 7.00-rc3. Important ahead GPU SVM merging THP support.
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
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Revision tags: v7.0-rc3, v7.0-rc2 |
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f09812b8 |
| 25-Feb-2026 |
Jani Nikula <jani.nikula@intel.com> |
Merge drm/drm-next into drm-intel-next
Sync with v7.0-rc1 which contains a few treewide changes affecting i915.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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8b85987d |
| 23-Feb-2026 |
Maxime Ripard <mripard@kernel.org> |
Merge drm/drm-next into drm-misc-next
Let's merge 7.0-rc1 to start the new drm-misc-next window
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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c17ee635 |
| 23-Feb-2026 |
Maxime Ripard <mripard@kernel.org> |
Merge drm/drm-fixes into drm-misc-fixes
7.0-rc1 was just released, let's merge it to kick the new release cycle.
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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Revision tags: v7.0-rc1 |
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cb557386 |
| 13-Feb-2026 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM updates from Paolo Bonzini: "Loongarch:
- Add more CPUCFG mask bits
- Improve feature detection
- Add lazy lo
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM updates from Paolo Bonzini: "Loongarch:
- Add more CPUCFG mask bits
- Improve feature detection
- Add lazy load support for FPU and binary translation (LBT) register state
- Fix return value for memory reads from and writes to in-kernel devices
- Add support for detecting preemption from within a guest
- Add KVM steal time test case to tools/selftests
ARM:
- Add support for FEAT_IDST, allowing ID registers that are not implemented to be reported as a normal trap rather than as an UNDEF exception
- Add sanitisation of the VTCR_EL2 register, fixing a number of UXN/PXN/XN bugs in the process
- Full handling of RESx bits, instead of only RES0, and resulting in SCTLR_EL2 being added to the list of sanitised registers
- More pKVM fixes for features that are not supposed to be exposed to guests
- Make sure that MTE being disabled on the pKVM host doesn't give it the ability to attack the hypervisor
- Allow pKVM's host stage-2 mappings to use the Force Write Back version of the memory attributes by using the "pass-through' encoding
- Fix trapping of ICC_DIR_EL1 on GICv5 hosts emulating GICv3 for the guest
- Preliminary work for guest GICv5 support
- A bunch of debugfs fixes, removing pointless custom iterators stored in guest data structures
- A small set of FPSIMD cleanups
- Selftest fixes addressing the incorrect alignment of page allocation
- Other assorted low-impact fixes and spelling fixes
RISC-V:
- Fixes for issues discoverd by KVM API fuzzing in kvm_riscv_aia_imsic_has_attr(), kvm_riscv_aia_imsic_rw_attr(), and kvm_riscv_vcpu_aia_imsic_update()
- Allow Zalasr, Zilsd and Zclsd extensions for Guest/VM
- Transparent huge page support for hypervisor page tables
- Adjust the number of available guest irq files based on MMIO register sizes found in the device tree or the ACPI tables
- Add RISC-V specific paging modes to KVM selftests
- Detect paging mode at runtime for selftests
s390:
- Performance improvement for vSIE (aka nested virtualization)
- Completely new memory management. s390 was a special snowflake that enlisted help from the architecture's page table management to build hypervisor page tables, in particular enabling sharing the last level of page tables. This however was a lot of code (~3K lines) in order to support KVM, and also blocked several features. The biggest advantages is that the page size of userspace is completely independent of the page size used by the guest: userspace can mix normal pages, THPs and hugetlbfs as it sees fit, and in fact transparent hugepages were not possible before. It's also now possible to have nested guests and guests with huge pages running on the same host
- Maintainership change for s390 vfio-pci
- Small quality of life improvement for protected guests
x86:
- Add support for giving the guest full ownership of PMU hardware (contexted switched around the fastpath run loop) and allowing direct access to data MSRs and PMCs (restricted by the vPMU model).
KVM still intercepts access to control registers, e.g. to enforce event filtering and to prevent the guest from profiling sensitive host state. This is more accurate, since it has no risk of contention and thus dropped events, and also has significantly less overhead.
For more information, see the commit message for merge commit bf2c3138ae36 ("Merge tag 'kvm-x86-pmu-6.20' ...")
- Disallow changing the virtual CPU model if L2 is active, for all the same reasons KVM disallows change the model after the first KVM_RUN
- Fix a bug where KVM would incorrectly reject host accesses to PV MSRs when running with KVM_CAP_ENFORCE_PV_FEATURE_CPUID enabled, even if those were advertised as supported to userspace,
- Fix a bug with protected guest state (SEV-ES/SNP and TDX) VMs, where KVM would attempt to read CR3 configuring an async #PF entry
- Fail the build if EXPORT_SYMBOL_GPL or EXPORT_SYMBOL is used in KVM (for x86 only) to enforce usage of EXPORT_SYMBOL_FOR_KVM_INTERNAL. Only a few exports that are intended for external usage, and those are allowed explicitly
- When checking nested events after a vCPU is unblocked, ignore -EBUSY instead of WARNing. Userspace can sometimes put the vCPU into what should be an impossible state, and spurious exit to userspace on -EBUSY does not really do anything to solve the issue
- Also throw in the towel and drop the WARN on INIT/SIPI being blocked when vCPU is in Wait-For-SIPI, which also resulted in playing whack-a-mole with syzkaller stuffing architecturally impossible states into KVM
- Add support for new Intel instructions that don't require anything beyond enumerating feature flags to userspace
- Grab SRCU when reading PDPTRs in KVM_GET_SREGS2
- Add WARNs to guard against modifying KVM's CPU caps outside of the intended setup flow, as nested VMX in particular is sensitive to unexpected changes in KVM's golden configuration
- Add a quirk to allow userspace to opt-in to actually suppress EOI broadcasts when the suppression feature is enabled by the guest (currently limited to split IRQCHIP, i.e. userspace I/O APIC). Sadly, simply fixing KVM to honor Suppress EOI Broadcasts isn't an option as some userspaces have come to rely on KVM's buggy behavior (KVM advertises Supress EOI Broadcast irrespective of whether or not userspace I/O APIC supports Directed EOIs)
- Clean up KVM's handling of marking mapped vCPU pages dirty
- Drop a pile of *ancient* sanity checks hidden behind in KVM's unused ASSERT() macro, most of which could be trivially triggered by the guest and/or user, and all of which were useless
- Fold "struct dest_map" into its sole user, "struct rtc_status", to make it more obvious what the weird parameter is used for, and to allow fropping these RTC shenanigans if CONFIG_KVM_IOAPIC=n
- Bury all of ioapic.h, i8254.h and related ioctls (including KVM_CREATE_IRQCHIP) behind CONFIG_KVM_IOAPIC=y
- Add a regression test for recent APICv update fixes
- Handle "hardware APIC ISR", a.k.a. SVI, updates in kvm_apic_update_apicv() to consolidate the updates, and to co-locate SVI updates with the updates for KVM's own cache of ISR information
- Drop a dead function declaration
- Minor cleanups
x86 (Intel):
- Rework KVM's handling of VMCS updates while L2 is active to temporarily switch to vmcs01 instead of deferring the update until the next nested VM-Exit.
The deferred updates approach directly contributed to several bugs, was proving to be a maintenance burden due to the difficulty in auditing the correctness of deferred updates, and was polluting "struct nested_vmx" with a growing pile of booleans
- Fix an SGX bug where KVM would incorrectly try to handle EPCM page faults, and instead always reflect them into the guest. Since KVM doesn't shadow EPCM entries, EPCM violations cannot be due to KVM interference and can't be resolved by KVM
- Fix a bug where KVM would register its posted interrupt wakeup handler even if loading kvm-intel.ko ultimately failed
- Disallow access to vmcb12 fields that aren't fully supported, mostly to avoid weirdness and complexity for FRED and other features, where KVM wants enable VMCS shadowing for fields that conditionally exist
- Print out the "bad" offsets and values if kvm-intel.ko refuses to load (or refuses to online a CPU) due to a VMCS config mismatch
x86 (AMD):
- Drop a user-triggerable WARN on nested_svm_load_cr3() failure
- Add support for virtualizing ERAPS. Note, correct virtualization of ERAPS relies on an upcoming, publicly announced change in the APM to reduce the set of conditions where hardware (i.e. KVM) *must* flush the RAP
- Ignore nSVM intercepts for instructions that are not supported according to L1's virtual CPU model
- Add support for expedited writes to the fast MMIO bus, a la VMX's fastpath for EPT Misconfig
- Don't set GIF when clearing EFER.SVME, as GIF exists independently of SVM, and allow userspace to restore nested state with GIF=0
- Treat exit_code as an unsigned 64-bit value through all of KVM
- Add support for fetching SNP certificates from userspace
- Fix a bug where KVM would use vmcb02 instead of vmcb01 when emulating VMLOAD or VMSAVE on behalf of L2
- Misc fixes and cleanups
x86 selftests:
- Add a regression test for TPR<=>CR8 synchronization and IRQ masking
- Overhaul selftest's MMU infrastructure to genericize stage-2 MMU support, and extend x86's infrastructure to support EPT and NPT (for L2 guests)
- Extend several nested VMX tests to also cover nested SVM
- Add a selftest for nested VMLOAD/VMSAVE
- Rework the nested dirty log test, originally added as a regression test for PML where KVM logged L2 GPAs instead of L1 GPAs, to improve test coverage and to hopefully make the test easier to understand and maintain
guest_memfd:
- Remove kvm_gmem_populate()'s preparation tracking and half-baked hugepage handling. SEV/SNP was the only user of the tracking and it can do it via the RMP
- Retroactively document and enforce (for SNP) that KVM_SEV_SNP_LAUNCH_UPDATE and KVM_TDX_INIT_MEM_REGION require the source page to be 4KiB aligned, to avoid non-trivial complexity for something that no known VMM seems to be doing and to avoid an API special case for in-place conversion, which simply can't support unaligned sources
- When populating guest_memfd memory, GUP the source page in common code and pass the refcounted page to the vendor callback, instead of letting vendor code do the heavy lifting. Doing so avoids a looming deadlock bug with in-place due an AB-BA conflict betwee mmap_lock and guest_memfd's filemap invalidate lock
Generic:
- Fix a bug where KVM would ignore the vCPU's selected address space when creating a vCPU-specific mapping of guest memory. Actually this bug could not be hit even on x86, the only architecture with multiple address spaces, but it's a bug nevertheless"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (267 commits) KVM: s390: Increase permitted SE header size to 1 MiB MAINTAINERS: Replace backup for s390 vfio-pci KVM: s390: vsie: Fix race in acquire_gmap_shadow() KVM: s390: vsie: Fix race in walk_guest_tables() KVM: s390: Use guest address to mark guest page dirty irqchip/riscv-imsic: Adjust the number of available guest irq files RISC-V: KVM: Transparent huge page support RISC-V: KVM: selftests: Add Zalasr extensions to get-reg-list test RISC-V: KVM: Allow Zalasr extensions for Guest/VM KVM: riscv: selftests: Add riscv vm satp modes KVM: riscv: selftests: add Zilsd and Zclsd extension to get-reg-list test riscv: KVM: allow Zilsd and Zclsd extensions for Guest/VM RISC-V: KVM: Skip IMSIC update if vCPU IMSIC state is not initialized RISC-V: KVM: Fix null pointer dereference in kvm_riscv_aia_imsic_rw_attr() RISC-V: KVM: Fix null pointer dereference in kvm_riscv_aia_imsic_has_attr() RISC-V: KVM: Remove unnecessary 'ret' assignment KVM: s390: Add explicit padding to struct kvm_s390_keyop KVM: LoongArch: selftests: Add steal time test case LoongArch: KVM: Add paravirt vcpu_is_preempted() support in guest side LoongArch: KVM: Add paravirt preempt feature in hypervisor side ...
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b1195183 |
| 11-Feb-2026 |
Paolo Bonzini <pbonzini@redhat.com> |
Merge tag 'kvm-s390-next-7.0-1' of https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD
- gmap rewrite: completely new memory management for kvm/s390 - vSIE improvement - maintain
Merge tag 'kvm-s390-next-7.0-1' of https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD
- gmap rewrite: completely new memory management for kvm/s390 - vSIE improvement - maintainership change for s390 vfio-pci - small quality of life improvement for protected guests
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Revision tags: v6.19 |
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e38c884d |
| 04-Feb-2026 |
Claudio Imbrenda <imbrenda@linux.ibm.com> |
KVM: s390: Switch to new gmap
Switch KVM/s390 to use the new gmap code.
Remove includes to <gmap.h> and include "gmap.h" instead; fix all the existing users of the old gmap functions to use the new
KVM: s390: Switch to new gmap
Switch KVM/s390 to use the new gmap code.
Remove includes to <gmap.h> and include "gmap.h" instead; fix all the existing users of the old gmap functions to use the new ones instead.
Fix guest storage key access functions to work with the new gmap.
Acked-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
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e907ae53 |
| 04-Feb-2026 |
Claudio Imbrenda <imbrenda@linux.ibm.com> |
KVM: s390: Add helper functions for fault handling
Add some helper functions for handling multiple guest faults at the same time.
This will be needed for VSIE, where a nested guest access also need
KVM: s390: Add helper functions for fault handling
Add some helper functions for handling multiple guest faults at the same time.
This will be needed for VSIE, where a nested guest access also needs to access all the page tables that map it.
Acked-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
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a2c17f92 |
| 04-Feb-2026 |
Claudio Imbrenda <imbrenda@linux.ibm.com> |
KVM: s390: New gmap code
New gmap (guest map) code. This new gmap code will only be used by KVM.
This will replace the existing gmap.
Acked-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Cl
KVM: s390: New gmap code
New gmap (guest map) code. This new gmap code will only be used by KVM.
This will replace the existing gmap.
Acked-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
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12f2f61a |
| 04-Feb-2026 |
Claudio Imbrenda <imbrenda@linux.ibm.com> |
KVM: s390: KVM page table management functions: allocation
Add page table management functions to be used for KVM guest (gmap) page tables.
This patch adds the boilerplate and functions for the all
KVM: s390: KVM page table management functions: allocation
Add page table management functions to be used for KVM guest (gmap) page tables.
This patch adds the boilerplate and functions for the allocation and deallocation of DAT tables.
Acked-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
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Revision tags: v6.19-rc8, v6.19-rc7, v6.19-rc6, v6.19-rc5, v6.19-rc4, v6.19-rc3, v6.19-rc2, v6.19-rc1, v6.18, v6.18-rc7, v6.18-rc6, v6.18-rc5, v6.18-rc4, v6.18-rc3, v6.18-rc2, v6.18-rc1, v6.17, v6.17-rc7 |
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f088104d |
| 16-Sep-2025 |
Joonas Lahtinen <joonas.lahtinen@linux.intel.com> |
Merge drm/drm-next into drm-intel-gt-next
Backmerge in order to get the commit:
048832a3f400 ("drm/i915: Refactor shmem_pwrite() to use kiocb and write_iter")
To drm-intel-gt-next as there are f
Merge drm/drm-next into drm-intel-gt-next
Backmerge in order to get the commit:
048832a3f400 ("drm/i915: Refactor shmem_pwrite() to use kiocb and write_iter")
To drm-intel-gt-next as there are followup fixes to be applied.
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
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Revision tags: v6.17-rc6, v6.17-rc5, v6.17-rc4, v6.17-rc3, v6.17-rc2, v6.17-rc1 |
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ab93e0dd |
| 06-Aug-2025 |
Dmitry Torokhov <dmitry.torokhov@gmail.com> |
Merge branch 'next' into for-linus
Prepare input updates for 6.17 merge window.
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a7bee4e7 |
| 04-Aug-2025 |
Dmitry Torokhov <dmitry.torokhov@gmail.com> |
Merge tag 'ib-mfd-gpio-input-pwm-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into next
Merge an immutable branch between MFD, GPIO, Input and PWM to resolve conflicts for the mer
Merge tag 'ib-mfd-gpio-input-pwm-v6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into next
Merge an immutable branch between MFD, GPIO, Input and PWM to resolve conflicts for the merge window pull request.
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Revision tags: v6.16, v6.16-rc7, v6.16-rc6, v6.16-rc5, v6.16-rc4 |
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74f1af95 |
| 29-Jun-2025 |
Rob Clark <robin.clark@oss.qualcomm.com> |
Merge remote-tracking branch 'drm/drm-next' into msm-next
Back-merge drm-next to (indirectly) get arm-smmu updates for making stall-on-fault more reliable.
Signed-off-by: Rob Clark <robin.clark@oss
Merge remote-tracking branch 'drm/drm-next' into msm-next
Back-merge drm-next to (indirectly) get arm-smmu updates for making stall-on-fault more reliable.
Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>
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