Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm updates from Paolo Bonzini:
 "ARM:

   - Clean up vCPU targets, always returning generic v8 as the preferred
     target

   - Trap forwarding infrastructure for nested virtualization (used for
     traps that are taken from an L2 guest and are needed by the L1
     hypervisor)

   - FEAT_TLBIRANGE support to only invalidate specific ranges of
     addresses when collapsing a table PTE to a block PTE. This avoids
     that the guest refills the TLBs again for addresses that aren't
     covered by the table PTE.

   - Fix vPMU issues related to handling of PMUver.

   - Don't unnecessary align non-stack allocations in the EL2 VA space

   - Drop HCR_VIRT_EXCP_MASK, which was never used...

   - Don't use smp_processor_id() in kvm_arch_vcpu_load(), but the cpu
     parameter instead

   - Drop redundant call to kvm_set_pfn_accessed() in user_mem_abort()

   - Remove prototypes without implementations

  RISC-V:

   - Zba, Zbs, Zicntr, Zicsr, Zifencei, and Zihpm support for guest

   - Added ONE_REG interface for SATP mode

   - Added ONE_REG interface to enable/disable multiple ISA extensions

   - Improved error codes returned by ONE_REG interfaces

   - Added KVM_GET_REG_LIST ioctl() implementation for KVM RISC-V

   - Added get-reg-list selftest for KVM RISC-V

  s390:

   - PV crypto passthrough enablement (Tony, Steffen, Viktor, Janosch)

     Allows a PV guest to use crypto cards. Card access is governed by
     the firmware and once a crypto queue is "bound" to a PV VM every
     other entity (PV or not) looses access until it is not bound
     anymore. Enablement is done via flags when creating the PV VM.

   - Guest debug fixes (Ilya)

  x86:

   - Clean up KVM's handling of Intel architectural events

   - Intel bugfixes

   - Add support for SEV-ES DebugSwap, allowing SEV-ES guests to use
     debug registers and generate/handle #DBs

   - Clean up LBR virtualization code

   - Fix a bug where KVM fails to set the target pCPU during an IRTE
     update

   - Fix fatal bugs in SEV-ES intrahost migration

   - Fix a bug where the recent (architecturally correct) change to
     reinject #BP and skip INT3 broke SEV guests (can't decode INT3 to
     skip it)

   - Retry APIC map recalculation if a vCPU is added/enabled

   - Overhaul emergency reboot code to bring SVM up to par with VMX, tie
     the "emergency disabling" behavior to KVM actually being loaded,
     and move all of the logic within KVM

   - Fix user triggerable WARNs in SVM where KVM incorrectly assumes the
     TSC ratio MSR cannot diverge from the default when TSC scaling is
     disabled up related code

   - Add a framework to allow "caching" feature flags so that KVM can
     check if the guest can use a feature without needing to search
     guest CPUID

   - Rip out the ancient MMU_DEBUG crud and replace the useful bits with
     CONFIG_KVM_PROVE_MMU

   - Fix KVM's handling of !visible guest roots to avoid premature
     triple fault injection

   - Overhaul KVM's page-track APIs, and KVMGT's usage, to reduce the
     API surface that is needed by external users (currently only
     KVMGT), and fix a variety of issues in the process

  Generic:

   - Wrap kvm_{gfn,hva}_range.pte in a union to allow mmu_notifier
     events to pass action specific data without needing to constantly
     update the main handlers.

   - Drop unused function declarations

  Selftests:

   - Add testcases to x86's sync_regs_test for detecting KVM TOCTOU bugs

   - Add support for printf() in guest code and covert all guest asserts
     to use printf-based reporting

   - Clean up the PMU event filter test and add new testcases

   - Include x86 selftests in the KVM x86 MAINTAINERS entry"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (279 commits)
  KVM: x86/mmu: Include mmu.h in spte.h
  KVM: x86/mmu: Use dummy root, backed by zero page, for !visible guest roots
  KVM: x86/mmu: Disallow guest from using !visible slots for page tables
  KVM: x86/mmu: Harden TDP MMU iteration against root w/o shadow page
  KVM: x86/mmu: Harden new PGD against roots without shadow pages
  KVM: x86/mmu: Add helper to convert root hpa to shadow page
  drm/i915/gvt: Drop final dependencies on KVM internal details
  KVM: x86/mmu: Handle KVM bookkeeping in page-track APIs, not callers
  KVM: x86/mmu: Drop @slot param from exported/external page-track APIs
  KVM: x86/mmu: Bug the VM if write-tracking is used but not enabled
  KVM: x86/mmu: Assert that correct locks are held for page write-tracking
  KVM: x86/mmu: Rename page-track APIs to reflect the new reality
  KVM: x86/mmu: Drop infrastructure for multiple page-track modes
  KVM: x86/mmu: Use page-track notifiers iff there are external users
  KVM: x86/mmu: Move KVM-only page-track declarations to internal header
  KVM: x86: Remove the unused page-track hook track_flush_slot()
  drm/i915/gvt: switch from ->track_flush_slot() to ->track_remove_region()
  KVM: x86: Add a new page-track hook to handle memslot deletion
  drm/i915/gvt: Don't bother removing write-protection on to-be-deleted slot
  KVM: x86: Reject memslot MOVE operations if KVMGT is attached
  ...

diff --cc Documentation/virt/kvm/api.rst
Simple merge

diff --cc MAINTAINERS
Simple merge

diff --cc arch/arm64/include/asm/sysreg.h
Simple merge

diff --cc arch/arm64/include/asm/tlbflush.h
index 55b50e1,93f4b39..b149cf9
--- 1/arch/arm64/include/asm/tlbflush.h
--- 2/arch/arm64/include/asm/tlbflush.h
+++ b/arch/arm64/include/asm/tlbflush.h
@@@ -364,58 -370,12 +427,13 @@@ static inline void __flush_tlb_range(st
        dsb(ishst);
        asid = ASID(vma->vm_mm);
  
-       /*
-        * When the CPU does not support TLB range operations, flush the TLB
-        * entries one by one at the granularity of 'stride'. If the TLB
-        * range ops are supported, then:
-        *
-        * 1. If 'pages' is odd, flush the first page through non-range
-        *    operations;
-        *
-        * 2. For remaining pages: the minimum range granularity is decided
-        *    by 'scale', so multiple range TLBI operations may be required.
-        *    Start from scale = 0, flush the corresponding number of pages
-        *    ((num+1)*2^(5*scale+1) starting from 'addr'), then increase it
-        *    until no pages left.
-        *
-        * Note that certain ranges can be represented by either num = 31 and
-        * scale or num = 0 and scale + 1. The loop below favours the latter
-        * since num is limited to 30 by the __TLBI_RANGE_NUM() macro.
-        */
-       while (pages > 0) {
-               if (!system_supports_tlb_range() ||
-                   pages % 2 == 1) {
-                       addr = __TLBI_VADDR(start, asid);
-                       if (last_level) {
-                               __tlbi_level(vale1is, addr, tlb_level);
-                               __tlbi_user_level(vale1is, addr, tlb_level);
-                       } else {
-                               __tlbi_level(vae1is, addr, tlb_level);
-                               __tlbi_user_level(vae1is, addr, tlb_level);
-                       }
-                       start += stride;
-                       pages -= stride >> PAGE_SHIFT;
-                       continue;
-               }
- 
-               num = __TLBI_RANGE_NUM(pages, scale);
-               if (num >= 0) {
-                       addr = __TLBI_VADDR_RANGE(start, asid, scale,
-                                                 num, tlb_level);
-                       if (last_level) {
-                               __tlbi(rvale1is, addr);
-                               __tlbi_user(rvale1is, addr);
-                       } else {
-                               __tlbi(rvae1is, addr);
-                               __tlbi_user(rvae1is, addr);
-                       }
-                       start += __TLBI_RANGE_PAGES(num, scale) << PAGE_SHIFT;
-                       pages -= __TLBI_RANGE_PAGES(num, scale);
-               }
-               scale++;
-       }
+       if (last_level)
+               __flush_tlb_range_op(vale1is, start, pages, stride, asid, tlb_level, true);
+       else
+               __flush_tlb_range_op(vae1is, start, pages, stride, asid, tlb_level, true);
+ 
        dsb(ish);
 +      mmu_notifier_arch_invalidate_secondary_tlbs(vma->vm_mm, start, end);
  }
  
  static inline void flush_tlb_range(struct vm_area_struct *vma,

diff --cc arch/arm64/kernel/cpufeature.c
Simple merge

diff --cc arch/s390/kvm/interrupt.c
Simple merge

diff --cc arch/s390/mm/fault.c
Simple merge

diff --cc arch/x86/include/asm/cpufeatures.h
Simple merge

diff --cc arch/x86/include/asm/kexec.h
index 3be6a98,8190469..c9f6a6c
--- 1/arch/x86/include/asm/kexec.h
--- 2/arch/x86/include/asm/kexec.h
+++ b/arch/x86/include/asm/kexec.h
@@@ -205,28 -205,8 +205,26 @@@ int arch_kimage_file_post_load_cleanup(
  #endif
  #endif
  
- typedef void crash_vmclear_fn(void);
- extern crash_vmclear_fn __rcu *crash_vmclear_loaded_vmcss;
  extern void kdump_nmi_shootdown_cpus(void);
  
 +#ifdef CONFIG_CRASH_HOTPLUG
 +void arch_crash_handle_hotplug_event(struct kimage *image);
 +#define arch_crash_handle_hotplug_event arch_crash_handle_hotplug_event
 +
 +#ifdef CONFIG_HOTPLUG_CPU
 +int arch_crash_hotplug_cpu_support(void);
 +#define crash_hotplug_cpu_support arch_crash_hotplug_cpu_support
 +#endif
 +
 +#ifdef CONFIG_MEMORY_HOTPLUG
 +int arch_crash_hotplug_memory_support(void);
 +#define crash_hotplug_memory_support arch_crash_hotplug_memory_support
 +#endif
 +
 +unsigned int arch_crash_get_elfcorehdr_size(void);
 +#define crash_get_elfcorehdr_size arch_crash_get_elfcorehdr_size
 +#endif
 +
  #endif /* __ASSEMBLY__ */
  
  #endif /* _ASM_X86_KEXEC_H */

diff --cc arch/x86/kernel/crash.c
Simple merge

diff --cc arch/x86/kvm/vmx/vmx.c
Simple merge

diff --cc drivers/gpu/drm/i915/gvt/kvmgt.c
Simple merge

diff --cc drivers/perf/arm_pmuv3.c
Simple merge

diff --cc virt/kvm/kvm_main.c
Simple merge