linux/arch/x86/kvm
Linus Torvalds bf82d38c91 x86:
* Fixes for Xen emulation.  While nobody should be enabling it in
   the kernel (the only public users of the feature are the selftests),
   the bug effectively allows userspace to read arbitrary memory.
 
 * Correctness fixes for nested hypervisors that do not intercept INIT
   or SHUTDOWN on AMD; the subsequent CPU reset can cause a use-after-free
   when it disables virtualization extensions.  While downgrading the panic
   to a WARN is quite easy, the full fix is a bit more laborious; there
   are also tests.  This is the bulk of the pull request.
 
 * Fix race condition due to incorrect mmu_lock use around
   make_mmu_pages_available().
 
 Generic:
 
 * Obey changes to the kvm.halt_poll_ns module parameter in VMs
   not using KVM_CAP_HALT_POLL, restoring behavior from before
   the introduction of the capability
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "x86:

   - Fixes for Xen emulation. While nobody should be enabling it in the
     kernel (the only public users of the feature are the selftests),
     the bug effectively allows userspace to read arbitrary memory.

   - Correctness fixes for nested hypervisors that do not intercept INIT
     or SHUTDOWN on AMD; the subsequent CPU reset can cause a
     use-after-free when it disables virtualization extensions. While
     downgrading the panic to a WARN is quite easy, the full fix is a
     bit more laborious; there are also tests. This is the bulk of the
     pull request.

   - Fix race condition due to incorrect mmu_lock use around
     make_mmu_pages_available().

  Generic:

   - Obey changes to the kvm.halt_poll_ns module parameter in VMs not
     using KVM_CAP_HALT_POLL, restoring behavior from before the
     introduction of the capability"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: Update gfn_to_pfn_cache khva when it moves within the same page
  KVM: x86/xen: Only do in-kernel acceleration of hypercalls for guest CPL0
  KVM: x86/xen: Validate port number in SCHEDOP_poll
  KVM: x86/mmu: Fix race condition in direct_page_fault
  KVM: x86: remove exit_int_info warning in svm_handle_exit
  KVM: selftests: add svm part to triple_fault_test
  KVM: x86: allow L1 to not intercept triple fault
  kvm: selftests: add svm nested shutdown test
  KVM: selftests: move idt_entry to header
  KVM: x86: forcibly leave nested mode on vCPU reset
  KVM: x86: add kvm_leave_nested
  KVM: x86: nSVM: harden svm_free_nested against freeing vmcb02 while still in use
  KVM: x86: nSVM: leave nested mode on vCPU free
  KVM: Obey kvm.halt_poll_ns in VMs not using KVM_CAP_HALT_POLL
  KVM: Avoid re-reading kvm->max_halt_poll_ns during halt-polling
  KVM: Cap vcpu->halt_poll_ns before halting rather than after
2022-11-27 09:08:40 -08:00
..
mmu KVM: x86/mmu: Fix race condition in direct_page_fault 2022-11-23 18:50:08 -05:00
svm x86: 2022-11-27 09:08:40 -08:00
vmx KVM: x86: allow L1 to not intercept triple fault 2022-11-17 11:39:59 -05:00
.gitignore KVM: x86: use a separate asm-offsets.c file 2022-11-09 12:10:17 -05:00
cpuid.c KVM: x86: Fix a typo about the usage of kvcalloc() 2022-11-03 09:39:29 -04:00
cpuid.h KVM: x86: Add dedicated helper to get CPUID entry with significant index 2022-07-14 11:38:32 -04:00
debugfs.c KVM: x86: Reduce refcount if single_open() fails in kvm_mmu_rmaps_stat_open() 2022-10-27 04:41:54 -04:00
emulate.c KVM: x86: smm: number of GPRs in the SMRAM image depends on the image format 2022-10-28 06:10:30 -04:00
fpu.h KVM: x86: Move FPU register accessors into fpu.h 2021-06-17 13:09:24 -04:00
hyperv.c KVM: nVMX: Support PERF_GLOBAL_CTRL with enlightened VMCS 2022-09-26 12:02:47 -04:00
hyperv.h KVM: x86: Report error when setting CPUID if Hyper-V allocation fails 2022-09-26 12:02:39 -04:00
i8254.c KVM: x86: PIT: Preserve state of speaker port data bit 2022-06-08 13:06:20 -04:00
i8254.h KVM: x86: PIT: Preserve state of speaker port data bit 2022-06-08 13:06:20 -04:00
i8259.c KVM: x86/i8259: Remove a dead store of irq in a conditional block 2022-04-02 05:41:19 -04:00
ioapic.c KVM: x86/ioapic: Remove unused "addr" and "length" of ioapic_read_indirect() 2022-02-10 13:47:13 -05:00
ioapic.h x86/kvm: remove unused ack_notifier callbacks 2021-11-18 07:05:57 -05:00
irq_comm.c KVM: x86/xen: Make kvm_xen_set_evtchn() reusable from other places 2022-04-02 05:41:14 -04:00
irq.c KVM: x86/xen: handle PV timers oneshot mode 2022-04-02 05:41:16 -04:00
irq.h x86/kvm: remove unused ack_notifier callbacks 2021-11-18 07:05:57 -05:00
Kconfig KVM: x86: Select CONFIG_HAVE_KVM_DIRTY_RING_ACQ_REL 2022-09-29 10:23:08 +01:00
kvm_cache_regs.h KVM: X86: Remove kvm_register_clear_available() 2021-12-08 04:25:03 -05:00
kvm_emulate.h KVM: x86: Bug the VM if the emulator accesses a non-existent GPR 2022-06-10 10:01:33 -04:00
kvm_onhyperv.c KVM: x86: Uninline and export hv_track_root_tdp() 2022-02-10 13:47:19 -05:00
kvm_onhyperv.h KVM: x86: Uninline and export hv_track_root_tdp() 2022-02-10 13:47:19 -05:00
kvm-asm-offsets.c KVM: SVM: move MSR_IA32_SPEC_CTRL save/restore to assembly 2022-11-09 12:25:53 -05:00
lapic.c KVM: x86: Don't snapshot pending INIT/SIPI prior to checking nested events 2022-09-26 12:37:20 -04:00
lapic.h KVM: x86: Rename kvm_apic_has_events() to make it INIT/SIPI specific 2022-09-26 12:37:18 -04:00
Makefile KVM: SVM: replace regs argument of __svm_vcpu_run() with vcpu_svm 2022-11-09 12:16:34 -05:00
mmu.h KVM: SVM: Disable SEV-ES support if MMIO caching is disable 2022-08-10 15:08:25 -04:00
mtrr.c
pmu.c KVM: x86/pmu: Limit the maximum number of supported Intel GP counters 2022-11-09 12:26:53 -05:00
pmu.h Revert "KVM: x86: always allow host-initiated writes to PMU MSRs" 2022-06-20 11:49:46 -04:00
reverse_cpuid.h
trace.h KVM: x86: Print guest pgd in kvm_nested_vmenter() 2022-09-26 12:02:33 -04:00
tss.h
x86.c x86: 2022-11-27 09:08:40 -08:00
x86.h KVM: x86: Rename and expose helper to detect if INIT/SIPI are allowed 2022-09-26 12:37:18 -04:00
xen.c KVM: x86/xen: Only do in-kernel acceleration of hypercalls for guest CPL0 2022-11-23 18:58:45 -05:00
xen.h KVM: x86: do not set st->preempted when going back to user space 2022-06-08 04:21:06 -04:00