diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-11-16 13:00:24 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-11-16 13:00:24 -0800 |
commit | 974aa5630b318938273d7efe7a2cf031c7b927db (patch) | |
tree | b79803c07b9c16d87058ce69f80ebe173cdfd838 /arch/powerpc/kvm/book3s_64_mmu_radix.c | |
parent | 441692aafc1731087bbaf657a8b6059d95c2a6df (diff) | |
parent | a6014f1ab7088dc02b58991cfb6b32a34afdbf12 (diff) |
Merge tag 'kvm-4.15-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM updates from Radim Krčmář:
"First batch of KVM changes for 4.15
Common:
- Python 3 support in kvm_stat
- Accounting of slabs to kmemcg
ARM:
- Optimized arch timer handling for KVM/ARM
- Improvements to the VGIC ITS code and introduction of an ITS reset
ioctl
- Unification of the 32-bit fault injection logic
- More exact external abort matching logic
PPC:
- Support for running hashed page table (HPT) MMU mode on a host that
is using the radix MMU mode; single threaded mode on POWER 9 is
added as a pre-requisite
- Resolution of merge conflicts with the last second 4.14 HPT fixes
- Fixes and cleanups
s390:
- Some initial preparation patches for exitless interrupts and crypto
- New capability for AIS migration
- Fixes
x86:
- Improved emulation of LAPIC timer mode changes, MCi_STATUS MSRs,
and after-reset state
- Refined dependencies for VMX features
- Fixes for nested SMI injection
- A lot of cleanups"
* tag 'kvm-4.15-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (89 commits)
KVM: s390: provide a capability for AIS state migration
KVM: s390: clear_io_irq() requests are not expected for adapter interrupts
KVM: s390: abstract conversion between isc and enum irq_types
KVM: s390: vsie: use common code functions for pinning
KVM: s390: SIE considerations for AP Queue virtualization
KVM: s390: document memory ordering for kvm_s390_vcpu_wakeup
KVM: PPC: Book3S HV: Cosmetic post-merge cleanups
KVM: arm/arm64: fix the incompatible matching for external abort
KVM: arm/arm64: Unify 32bit fault injection
KVM: arm/arm64: vgic-its: Implement KVM_DEV_ARM_ITS_CTRL_RESET
KVM: arm/arm64: Document KVM_DEV_ARM_ITS_CTRL_RESET
KVM: arm/arm64: vgic-its: Free caches when GITS_BASER Valid bit is cleared
KVM: arm/arm64: vgic-its: New helper functions to free the caches
KVM: arm/arm64: vgic-its: Remove kvm_its_unmap_device
arm/arm64: KVM: Load the timer state when enabling the timer
KVM: arm/arm64: Rework kvm_timer_should_fire
KVM: arm/arm64: Get rid of kvm_timer_flush_hwstate
KVM: arm/arm64: Avoid phys timer emulation in vcpu entry/exit
KVM: arm/arm64: Move phys_timer_emulate function
KVM: arm/arm64: Use kvm_arm_timer_set/get_reg for guest register traps
...
Diffstat (limited to 'arch/powerpc/kvm/book3s_64_mmu_radix.c')
-rw-r--r-- | arch/powerpc/kvm/book3s_64_mmu_radix.c | 51 |
1 files changed, 10 insertions, 41 deletions
diff --git a/arch/powerpc/kvm/book3s_64_mmu_radix.c b/arch/powerpc/kvm/book3s_64_mmu_radix.c index c5d7435455f1..58618f644c56 100644 --- a/arch/powerpc/kvm/book3s_64_mmu_radix.c +++ b/arch/powerpc/kvm/book3s_64_mmu_radix.c @@ -474,26 +474,6 @@ int kvmppc_book3s_radix_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu, return ret; } -static void mark_pages_dirty(struct kvm *kvm, struct kvm_memory_slot *memslot, - unsigned long gfn, unsigned int order) -{ - unsigned long i, limit; - unsigned long *dp; - - if (!memslot->dirty_bitmap) - return; - limit = 1ul << order; - if (limit < BITS_PER_LONG) { - for (i = 0; i < limit; ++i) - mark_page_dirty(kvm, gfn + i); - return; - } - dp = memslot->dirty_bitmap + (gfn - memslot->base_gfn); - limit /= BITS_PER_LONG; - for (i = 0; i < limit; ++i) - *dp++ = ~0ul; -} - /* Called with kvm->lock held */ int kvm_unmap_radix(struct kvm *kvm, struct kvm_memory_slot *memslot, unsigned long gfn) @@ -508,12 +488,11 @@ int kvm_unmap_radix(struct kvm *kvm, struct kvm_memory_slot *memslot, old = kvmppc_radix_update_pte(kvm, ptep, _PAGE_PRESENT, 0, gpa, shift); kvmppc_radix_tlbie_page(kvm, gpa, shift); - if (old & _PAGE_DIRTY) { - if (!shift) - mark_page_dirty(kvm, gfn); - else - mark_pages_dirty(kvm, memslot, - gfn, shift - PAGE_SHIFT); + if ((old & _PAGE_DIRTY) && memslot->dirty_bitmap) { + unsigned long npages = 1; + if (shift) + npages = 1ul << (shift - PAGE_SHIFT); + kvmppc_update_dirty_map(memslot, gfn, npages); } } return 0; @@ -579,20 +558,8 @@ long kvmppc_hv_get_dirty_log_radix(struct kvm *kvm, struct kvm_memory_slot *memslot, unsigned long *map) { unsigned long i, j; - unsigned long n, *p; int npages; - /* - * Radix accumulates dirty bits in the first half of the - * memslot's dirty_bitmap area, for when pages are paged - * out or modified by the host directly. Pick up these - * bits and add them to the map. - */ - n = kvm_dirty_bitmap_bytes(memslot) / sizeof(long); - p = memslot->dirty_bitmap; - for (i = 0; i < n; ++i) - map[i] |= xchg(&p[i], 0); - for (i = 0; i < memslot->npages; i = j) { npages = kvm_radix_test_clear_dirty(kvm, memslot, i); @@ -604,9 +571,10 @@ long kvmppc_hv_get_dirty_log_radix(struct kvm *kvm, * real address, if npages > 1 we can skip to i + npages. */ j = i + 1; - if (npages) - for (j = i; npages; ++j, --npages) - __set_bit_le(j, map); + if (npages) { + set_dirty_bits(map, i, npages); + i = j + npages; + } } return 0; } @@ -694,6 +662,7 @@ void kvmppc_free_radix(struct kvm *kvm) pgd_clear(pgd); } pgd_free(kvm->mm, kvm->arch.pgtable); + kvm->arch.pgtable = NULL; } static void pte_ctor(void *addr) |