linux.git/arch/mips/kvm, branch v5.16 Linux kernel source tree KVM: MIPS: Cap KVM_CAP_NR_VCPUS by KVM_CAP_MAX_VCPUS 2021-11-18T07:12:14+00:00 Vitaly Kuznetsov vkuznets@redhat.com 2021-11-16T16:34:39+00:00 57a2e13ebdda8b65602b44ec8b80e385603eb84c It doesn't make sense to return the recommended maximum number of vCPUs which exceeds the maximum possible number of vCPUs. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Message-Id: <20211116163443.88707-3-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> 
It doesn't make sense to return the recommended maximum number of
vCPUs which exceeds the maximum possible number of vCPUs.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20211116163443.88707-3-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Merge tag 'mips_5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux 2021-11-05T15:13:19+00:00 Linus Torvalds torvalds@linux-foundation.org 2021-11-05T15:13:19+00:00 a3f36773802d44d1e50e7c4c09b3e17018581d11 Pull MIPS updates from Thomas Bogendoerfer: - added printing of CPU options for /proc/cpuinfo - removed support for Netlogic SOCs - fixes and cleanup * tag 'mips_5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: MIPS: Cobalt: Explain GT64111 early PCI fixup mips: fix HUGETLB function without THP enabled mips: cm: Convert to bitfield API to fix out-of-bounds access MIPS: Remove NETLOGIC support MIPS: kernel: proc: add CPU option reporting MIPS: kernel: proc: use seq_puts instead of seq_printf MIPS: kernel: proc: fix trivial style errors MIPS: Fix assembly error from MIPSr2 code used within MIPS_ISA_ARCH_LEVEL MIPS: octeon: Remove unused functions MIPS: Loongson64: Add of_node_put() before break bcm47xx: Replace printk(KERN_ALERT ... pci_devname(dev)) with pci_alert() bcm47xx: Get rid of redundant 'else' MIPS: sni: Fix the build MIPS: Avoid macro redefinitions MIPS: loongson64: Fix no screen display during boot-up MIPS: loongson64: make CPU_LOONGSON64 depends on MIPS_FP_SUPPORT 
Pull MIPS updates from Thomas Bogendoerfer:

 - added printing of CPU options for /proc/cpuinfo

 - removed support for Netlogic SOCs

 - fixes and cleanup

* tag 'mips_5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  MIPS: Cobalt: Explain GT64111 early PCI fixup
  mips: fix HUGETLB function without THP enabled
  mips: cm: Convert to bitfield API to fix out-of-bounds access
  MIPS: Remove NETLOGIC support
  MIPS: kernel: proc: add CPU option reporting
  MIPS: kernel: proc: use seq_puts instead of seq_printf
  MIPS: kernel: proc: fix trivial style errors
  MIPS: Fix assembly error from MIPSr2 code used within MIPS_ISA_ARCH_LEVEL
  MIPS: octeon: Remove unused functions
  MIPS: Loongson64: Add of_node_put() before break
  bcm47xx: Replace printk(KERN_ALERT ... pci_devname(dev)) with pci_alert()
  bcm47xx: Get rid of redundant 'else'
  MIPS: sni: Fix the build
  MIPS: Avoid macro redefinitions
  MIPS: loongson64: Fix no screen display during boot-up
  MIPS: loongson64: make CPU_LOONGSON64 depends on MIPS_FP_SUPPORT
MIPS: Remove NETLOGIC support 2021-10-24T15:24:47+00:00 Thomas Bogendoerfer tsbogend@alpha.franken.de 2021-10-20T12:49:13+00:00 95b8a5e0111a47e5ef780c04cb6293be33d6ee0d No (active) developer owns this hardware, so let's remove Linux support. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> 
No (active) developer owns this hardware, so let's remove Linux support.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
kvm: rename KVM_MAX_VCPU_ID to KVM_MAX_VCPU_IDS 2021-09-30T08:27:05+00:00 Juergen Gross jgross@suse.com 2021-09-13T13:57:44+00:00 a1c42ddedf35dbf5f25ea0982ed6e226eef7a78c KVM_MAX_VCPU_ID is not specifying the highest allowed vcpu-id, but the number of allowed vcpu-ids. This has already led to confusion, so rename KVM_MAX_VCPU_ID to KVM_MAX_VCPU_IDS to make its semantics more clear Suggested-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Juergen Gross <jgross@suse.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20210913135745.13944-3-jgross@suse.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> 
KVM_MAX_VCPU_ID is not specifying the highest allowed vcpu-id, but the
number of allowed vcpu-ids. This has already led to confusion, so
rename KVM_MAX_VCPU_ID to KVM_MAX_VCPU_IDS to make its semantics more
clear

Suggested-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210913135745.13944-3-jgross@suse.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm 2021-09-07T20:40:51+00:00 Linus Torvalds torvalds@linux-foundation.org 2021-09-07T20:40:51+00:00 192ad3c27a4895ee4b2fa31c5b54a932f5bb08c1 Pull KVM updates from Paolo Bonzini: "ARM: - Page ownership tracking between host EL1 and EL2 - Rely on userspace page tables to create large stage-2 mappings - Fix incompatibility between pKVM and kmemleak - Fix the PMU reset state, and improve the performance of the virtual PMU - Move over to the generic KVM entry code - Address PSCI reset issues w.r.t. save/restore - Preliminary rework for the upcoming pKVM fixed feature - A bunch of MM cleanups - a vGIC fix for timer spurious interrupts - Various cleanups s390: - enable interpretation of specification exceptions - fix a vcpu_idx vs vcpu_id mixup x86: - fast (lockless) page fault support for the new MMU - new MMU now the default - increased maximum allowed VCPU count - allow inhibit IRQs on KVM_RUN while debugging guests - let Hyper-V-enabled guests run with virtualized LAPIC as long as they do not enable the Hyper-V "AutoEOI" feature - fixes and optimizations for the toggling of AMD AVIC (virtualized LAPIC) - tuning for the case when two-dimensional paging (EPT/NPT) is disabled - bugfixes and cleanups, especially with respect to vCPU reset and choosing a paging mode based on CR0/CR4/EFER - support for 5-level page table on AMD processors Generic: - MMU notifier invalidation callbacks do not take mmu_lock unless necessary - improved caching of LRU kvm_memory_slot - support for histogram statistics - add statistics for halt polling and remote TLB flush requests" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (210 commits) KVM: Drop unused kvm_dirty_gfn_invalid() KVM: x86: Update vCPU's hv_clock before back to guest when tsc_offset is adjusted KVM: MMU: mark role_regs and role accessors as maybe unused KVM: MIPS: Remove a "set but not used" variable x86/kvm: Don't enable IRQ when IRQ enabled in kvm_wait KVM: stats: Add VM stat for remote tlb flush requests KVM: Remove unnecessary export of kvm_{inc,dec}_notifier_count() KVM: x86/mmu: Move lpage_disallowed_link further "down" in kvm_mmu_page KVM: x86/mmu: Relocate kvm_mmu_page.tdp_mmu_page for better cache locality Revert "KVM: x86: mmu: Add guest physical address check in translate_gpa()" KVM: x86/mmu: Remove unused field mmio_cached in struct kvm_mmu_page kvm: x86: Increase KVM_SOFT_MAX_VCPUS to 710 kvm: x86: Increase MAX_VCPUS to 1024 kvm: x86: Set KVM_MAX_VCPU_ID to 4*KVM_MAX_VCPUS KVM: VMX: avoid running vmx_handle_exit_irqoff in case of emulation KVM: x86/mmu: Don't freak out if pml5_root is NULL on 4-level host KVM: s390: index kvm->arch.idle_mask by vcpu_idx KVM: s390: Enable specification exception interpretation KVM: arm64: Trim guest debug exception handling KVM: SVM: Add 5-level page table support for SVM ... 
Pull KVM updates from Paolo Bonzini:
 "ARM:
   - Page ownership tracking between host EL1 and EL2
   - Rely on userspace page tables to create large stage-2 mappings
   - Fix incompatibility between pKVM and kmemleak
   - Fix the PMU reset state, and improve the performance of the virtual
     PMU
   - Move over to the generic KVM entry code
   - Address PSCI reset issues w.r.t. save/restore
   - Preliminary rework for the upcoming pKVM fixed feature
   - A bunch of MM cleanups
   - a vGIC fix for timer spurious interrupts
   - Various cleanups

  s390:
   - enable interpretation of specification exceptions
   - fix a vcpu_idx vs vcpu_id mixup

  x86:
   - fast (lockless) page fault support for the new MMU
   - new MMU now the default
   - increased maximum allowed VCPU count
   - allow inhibit IRQs on KVM_RUN while debugging guests
   - let Hyper-V-enabled guests run with virtualized LAPIC as long as
     they do not enable the Hyper-V "AutoEOI" feature
   - fixes and optimizations for the toggling of AMD AVIC (virtualized
     LAPIC)
   - tuning for the case when two-dimensional paging (EPT/NPT) is
     disabled
   - bugfixes and cleanups, especially with respect to vCPU reset and
     choosing a paging mode based on CR0/CR4/EFER
   - support for 5-level page table on AMD processors

  Generic:
   - MMU notifier invalidation callbacks do not take mmu_lock unless
     necessary
   - improved caching of LRU kvm_memory_slot
   - support for histogram statistics
   - add statistics for halt polling and remote TLB flush requests"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (210 commits)
  KVM: Drop unused kvm_dirty_gfn_invalid()
  KVM: x86: Update vCPU's hv_clock before back to guest when tsc_offset is adjusted
  KVM: MMU: mark role_regs and role accessors as maybe unused
  KVM: MIPS: Remove a "set but not used" variable
  x86/kvm: Don't enable IRQ when IRQ enabled in kvm_wait
  KVM: stats: Add VM stat for remote tlb flush requests
  KVM: Remove unnecessary export of kvm_{inc,dec}_notifier_count()
  KVM: x86/mmu: Move lpage_disallowed_link further "down" in kvm_mmu_page
  KVM: x86/mmu: Relocate kvm_mmu_page.tdp_mmu_page for better cache locality
  Revert "KVM: x86: mmu: Add guest physical address check in translate_gpa()"
  KVM: x86/mmu: Remove unused field mmio_cached in struct kvm_mmu_page
  kvm: x86: Increase KVM_SOFT_MAX_VCPUS to 710
  kvm: x86: Increase MAX_VCPUS to 1024
  kvm: x86: Set KVM_MAX_VCPU_ID to 4*KVM_MAX_VCPUS
  KVM: VMX: avoid running vmx_handle_exit_irqoff in case of emulation
  KVM: x86/mmu: Don't freak out if pml5_root is NULL on 4-level host
  KVM: s390: index kvm->arch.idle_mask by vcpu_idx
  KVM: s390: Enable specification exception interpretation
  KVM: arm64: Trim guest debug exception handling
  KVM: SVM: Add 5-level page table support for SVM
  ...
KVM: MIPS: Remove a "set but not used" variable 2021-09-06T10:52:10+00:00 Huacai Chen chenhuacai@loongson.cn 2021-04-06T02:49:11+00:00 a3cf527e70bd1553500746ef2f38db41e2af1d9e This fix a build warning: arch/mips/kvm/vz.c: In function '_kvm_vz_restore_htimer': >> arch/mips/kvm/vz.c:392:10: warning: variable 'freeze_time' set but not used [-Wunused-but-set-variable] 392 | ktime_t freeze_time; | ^~~~~~~~~~~ Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> Message-Id: <20210406024911.2008046-1-chenhuacai@loongson.cn> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> 
This fix a build warning:

   arch/mips/kvm/vz.c: In function '_kvm_vz_restore_htimer':
>> arch/mips/kvm/vz.c:392:10: warning: variable 'freeze_time' set but not used [-Wunused-but-set-variable]
     392 |  ktime_t freeze_time;
         |          ^~~~~~~~~~~

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Message-Id: <20210406024911.2008046-1-chenhuacai@loongson.cn>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
MIPS: Return true/false (not 1/0) from bool functions 2021-08-21T08:37:30+00:00 Huilong Deng denghuilong@cdjrlc.com 2021-08-17T02:53:38+00:00 126b39368604dbf155ce6dad8781a0454477022a ./arch/mips/kernel/uprobes.c:261:8-9: WARNING: return of 0/1 in function 'arch_uprobe_skip_sstep' with return type bool ./arch/mips/kernel/uprobes.c:78:10-11: WARNING: return of 0/1 in function 'is_trap_insn' with return type bool ./arch/mips/kvm/mmu.c:489:9-10: WARNING: return of 0/1 in function 'kvm_test_age_gfn' with return type bool ./arch/mips/kvm/mmu.c:445:8-9: WARNING: return of 0/1 in function 'kvm_unmap_gfn_range' with return type bool Signed-off-by: Huilong Deng <denghuilong@cdjrlc.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> 
./arch/mips/kernel/uprobes.c:261:8-9: WARNING: return of 0/1 in function
'arch_uprobe_skip_sstep' with return type bool
./arch/mips/kernel/uprobes.c:78:10-11: WARNING: return of 0/1 in
function 'is_trap_insn' with return type bool
./arch/mips/kvm/mmu.c:489:9-10: WARNING: return of 0/1 in function
'kvm_test_age_gfn' with return type bool
./arch/mips/kvm/mmu.c:445:8-9: WARNING: return of 0/1 in function
'kvm_unmap_gfn_range' with return type bool

Signed-off-by: Huilong Deng <denghuilong@cdjrlc.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
KVM: stats: Support linear and logarithmic histogram statistics 2021-08-20T20:06:32+00:00 Jing Zhang jingzhangos@google.com 2021-08-02T16:56:29+00:00 f95937ccf5bd5e0a6bbac2b8e65a87982ffae403 Add new types of KVM stats, linear and logarithmic histogram. Histogram are very useful for observing the value distribution of time or size related stats. Signed-off-by: Jing Zhang <jingzhangos@google.com> Message-Id: <20210802165633.1866976-2-jingzhangos@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> 
Add new types of KVM stats, linear and logarithmic histogram.
Histogram are very useful for observing the value distribution
of time or size related stats.

Signed-off-by: Jing Zhang <jingzhangos@google.com>
Message-Id: <20210802165633.1866976-2-jingzhangos@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
mips: clean up kvm Makefile 2021-07-22T10:01:25+00:00 Masahiro Yamada masahiroy@kernel.org 2021-03-31T15:06:57+00:00 d656132d2a2abc06917d822f7adcda86fd6dd192 You can use kvm-y instead of kvm-objs to create the composite module. kvm-$(CONFIG_...) looks cleaner. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> 
You can use kvm-y instead of kvm-objs to create the composite module.
kvm-$(CONFIG_...) looks cleaner.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
mips: replace deprecated EXTRA_CFLAGS with ccflags-y 2021-07-22T09:56:25+00:00 Masahiro Yamada masahiroy@kernel.org 2021-03-31T15:06:56+00:00 d17eef2767d84b7dc4e1b8029be1eacb1d8679f6 As Documentation/kbuild/makefiles.rst says, EXTRA_CFLAGS is deprecated. Replace it with ccflags-y. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> 
As Documentation/kbuild/makefiles.rst says, EXTRA_CFLAGS is deprecated.
Replace it with ccflags-y.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>