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authorLinus Torvalds <torvalds@linux-foundation.org>2012-10-04 09:30:33 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-04 09:30:33 -0700
commitecefbd94b834fa32559d854646d777c56749ef1c (patch)
treeca8958900ad9e208a8e5fb7704f1b66dc76131b4 /arch/powerpc
parentce57e981f2b996aaca2031003b3f866368307766 (diff)
parent3d11df7abbff013b811d5615320580cd5d9d7d31 (diff)
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Merge tag 'kvm-3.7-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM updates from Avi Kivity: "Highlights of the changes for this release include support for vfio level triggered interrupts, improved big real mode support on older Intels, a streamlines guest page table walker, guest APIC speedups, PIO optimizations, better overcommit handling, and read-only memory." * tag 'kvm-3.7-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (138 commits) KVM: s390: Fix vcpu_load handling in interrupt code KVM: x86: Fix guest debug across vcpu INIT reset KVM: Add resampling irqfds for level triggered interrupts KVM: optimize apic interrupt delivery KVM: MMU: Eliminate pointless temporary 'ac' KVM: MMU: Avoid access/dirty update loop if all is well KVM: MMU: Eliminate eperm temporary KVM: MMU: Optimize is_last_gpte() KVM: MMU: Simplify walk_addr_generic() loop KVM: MMU: Optimize pte permission checks KVM: MMU: Update accessed and dirty bits after guest pagetable walk KVM: MMU: Move gpte_access() out of paging_tmpl.h KVM: MMU: Optimize gpte_access() slightly KVM: MMU: Push clean gpte write protection out of gpte_access() KVM: clarify kvmclock documentation KVM: make processes waiting on vcpu mutex killable KVM: SVM: Make use of asm.h KVM: VMX: Make use of asm.h KVM: VMX: Make lto-friendly KVM: x86: lapic: Clean up find_highest_vector() and count_vectors() ... Conflicts: arch/s390/include/asm/processor.h arch/x86/kvm/i8259.c
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/include/asm/kvm_host.h3
-rw-r--r--arch/powerpc/kvm/44x_tlb.c1
-rw-r--r--arch/powerpc/kvm/book3s_64_mmu_hv.c51
-rw-r--r--arch/powerpc/kvm/book3s_hv_rm_mmu.c6
-rw-r--r--arch/powerpc/kvm/book3s_pr.c4
-rw-r--r--arch/powerpc/kvm/e500_tlb.c3
-rw-r--r--arch/powerpc/kvm/powerpc.c14
7 files changed, 60 insertions, 22 deletions
diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
index a8bf5c673a3..28e8f5e5c63 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -53,6 +53,8 @@
struct kvm;
extern int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
+extern int kvm_unmap_hva_range(struct kvm *kvm,
+ unsigned long start, unsigned long end);
extern int kvm_age_hva(struct kvm *kvm, unsigned long hva);
extern int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
extern void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
@@ -220,6 +222,7 @@ struct revmap_entry {
#define KVMPPC_GOT_PAGE 0x80
struct kvm_arch_memory_slot {
+ unsigned long *rmap;
};
struct kvm_arch {
diff --git a/arch/powerpc/kvm/44x_tlb.c b/arch/powerpc/kvm/44x_tlb.c
index 33aa715dab2..5dd3ab46997 100644
--- a/arch/powerpc/kvm/44x_tlb.c
+++ b/arch/powerpc/kvm/44x_tlb.c
@@ -319,7 +319,6 @@ void kvmppc_mmu_map(struct kvm_vcpu *vcpu, u64 gvaddr, gpa_t gpaddr,
if (is_error_page(new_page)) {
printk(KERN_ERR "Couldn't get guest page for gfn %llx!\n",
(unsigned long long)gfn);
- kvm_release_page_clean(new_page);
return;
}
hpaddr = page_to_phys(new_page);
diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c
index d03eb6f7b05..d95d11322a1 100644
--- a/arch/powerpc/kvm/book3s_64_mmu_hv.c
+++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c
@@ -705,7 +705,7 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
goto out_unlock;
hpte[0] = (hpte[0] & ~HPTE_V_ABSENT) | HPTE_V_VALID;
- rmap = &memslot->rmap[gfn - memslot->base_gfn];
+ rmap = &memslot->arch.rmap[gfn - memslot->base_gfn];
lock_rmap(rmap);
/* Check if we might have been invalidated; let the guest retry if so */
@@ -756,9 +756,12 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu,
goto out_put;
}
-static int kvm_handle_hva(struct kvm *kvm, unsigned long hva,
- int (*handler)(struct kvm *kvm, unsigned long *rmapp,
- unsigned long gfn))
+static int kvm_handle_hva_range(struct kvm *kvm,
+ unsigned long start,
+ unsigned long end,
+ int (*handler)(struct kvm *kvm,
+ unsigned long *rmapp,
+ unsigned long gfn))
{
int ret;
int retval = 0;
@@ -767,15 +770,25 @@ static int kvm_handle_hva(struct kvm *kvm, unsigned long hva,
slots = kvm_memslots(kvm);
kvm_for_each_memslot(memslot, slots) {
- unsigned long start = memslot->userspace_addr;
- unsigned long end;
+ unsigned long hva_start, hva_end;
+ gfn_t gfn, gfn_end;
- end = start + (memslot->npages << PAGE_SHIFT);
- if (hva >= start && hva < end) {
- gfn_t gfn_offset = (hva - start) >> PAGE_SHIFT;
+ hva_start = max(start, memslot->userspace_addr);
+ hva_end = min(end, memslot->userspace_addr +
+ (memslot->npages << PAGE_SHIFT));
+ if (hva_start >= hva_end)
+ continue;
+ /*
+ * {gfn(page) | page intersects with [hva_start, hva_end)} =
+ * {gfn, gfn+1, ..., gfn_end-1}.
+ */
+ gfn = hva_to_gfn_memslot(hva_start, memslot);
+ gfn_end = hva_to_gfn_memslot(hva_end + PAGE_SIZE - 1, memslot);
+
+ for (; gfn < gfn_end; ++gfn) {
+ gfn_t gfn_offset = gfn - memslot->base_gfn;
- ret = handler(kvm, &memslot->rmap[gfn_offset],
- memslot->base_gfn + gfn_offset);
+ ret = handler(kvm, &memslot->arch.rmap[gfn_offset], gfn);
retval |= ret;
}
}
@@ -783,6 +796,13 @@ static int kvm_handle_hva(struct kvm *kvm, unsigned long hva,
return retval;
}
+static int kvm_handle_hva(struct kvm *kvm, unsigned long hva,
+ int (*handler)(struct kvm *kvm, unsigned long *rmapp,
+ unsigned long gfn))
+{
+ return kvm_handle_hva_range(kvm, hva, hva + 1, handler);
+}
+
static int kvm_unmap_rmapp(struct kvm *kvm, unsigned long *rmapp,
unsigned long gfn)
{
@@ -850,6 +870,13 @@ int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
return 0;
}
+int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end)
+{
+ if (kvm->arch.using_mmu_notifiers)
+ kvm_handle_hva_range(kvm, start, end, kvm_unmap_rmapp);
+ return 0;
+}
+
static int kvm_age_rmapp(struct kvm *kvm, unsigned long *rmapp,
unsigned long gfn)
{
@@ -1009,7 +1036,7 @@ long kvmppc_hv_get_dirty_log(struct kvm *kvm, struct kvm_memory_slot *memslot)
unsigned long *rmapp, *map;
preempt_disable();
- rmapp = memslot->rmap;
+ rmapp = memslot->arch.rmap;
map = memslot->dirty_bitmap;
for (i = 0; i < memslot->npages; ++i) {
if (kvm_test_clear_dirty(kvm, rmapp))
diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
index 5c70d19494f..fb0e821622d 100644
--- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c
+++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c
@@ -84,7 +84,7 @@ static void remove_revmap_chain(struct kvm *kvm, long pte_index,
if (!memslot || (memslot->flags & KVM_MEMSLOT_INVALID))
return;
- rmap = real_vmalloc_addr(&memslot->rmap[gfn - memslot->base_gfn]);
+ rmap = real_vmalloc_addr(&memslot->arch.rmap[gfn - memslot->base_gfn]);
lock_rmap(rmap);
head = *rmap & KVMPPC_RMAP_INDEX;
@@ -180,7 +180,7 @@ long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
if (!slot_is_aligned(memslot, psize))
return H_PARAMETER;
slot_fn = gfn - memslot->base_gfn;
- rmap = &memslot->rmap[slot_fn];
+ rmap = &memslot->arch.rmap[slot_fn];
if (!kvm->arch.using_mmu_notifiers) {
physp = kvm->arch.slot_phys[memslot->id];
@@ -197,7 +197,7 @@ long kvmppc_h_enter(struct kvm_vcpu *vcpu, unsigned long flags,
pa &= PAGE_MASK;
} else {
/* Translate to host virtual address */
- hva = gfn_to_hva_memslot(memslot, gfn);
+ hva = __gfn_to_hva_memslot(memslot, gfn);
/* Look up the Linux PTE for the backing page */
pte_size = psize;
diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c
index a1baec340f7..05c28f59f77 100644
--- a/arch/powerpc/kvm/book3s_pr.c
+++ b/arch/powerpc/kvm/book3s_pr.c
@@ -242,10 +242,8 @@ static void kvmppc_patch_dcbz(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte)
int i;
hpage = gfn_to_page(vcpu->kvm, pte->raddr >> PAGE_SHIFT);
- if (is_error_page(hpage)) {
- kvm_release_page_clean(hpage);
+ if (is_error_page(hpage))
return;
- }
hpage_offset = pte->raddr & ~PAGE_MASK;
hpage_offset &= ~0xFFFULL;
diff --git a/arch/powerpc/kvm/e500_tlb.c b/arch/powerpc/kvm/e500_tlb.c
index a2b66717813..ff38b664195 100644
--- a/arch/powerpc/kvm/e500_tlb.c
+++ b/arch/powerpc/kvm/e500_tlb.c
@@ -520,11 +520,10 @@ static inline void kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500,
if (likely(!pfnmap)) {
unsigned long tsize_pages = 1 << (tsize + 10 - PAGE_SHIFT);
- pfn = gfn_to_pfn_memslot(vcpu_e500->vcpu.kvm, slot, gfn);
+ pfn = gfn_to_pfn_memslot(slot, gfn);
if (is_error_pfn(pfn)) {
printk(KERN_ERR "Couldn't get real page for gfn %lx!\n",
(long)gfn);
- kvm_release_pfn_clean(pfn);
return;
}
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 87f4dc88607..4d213b8b0fb 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -302,10 +302,18 @@ long kvm_arch_dev_ioctl(struct file *filp,
void kvm_arch_free_memslot(struct kvm_memory_slot *free,
struct kvm_memory_slot *dont)
{
+ if (!dont || free->arch.rmap != dont->arch.rmap) {
+ vfree(free->arch.rmap);
+ free->arch.rmap = NULL;
+ }
}
int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages)
{
+ slot->arch.rmap = vzalloc(npages * sizeof(*slot->arch.rmap));
+ if (!slot->arch.rmap)
+ return -ENOMEM;
+
return 0;
}
@@ -326,8 +334,12 @@ void kvm_arch_commit_memory_region(struct kvm *kvm,
kvmppc_core_commit_memory_region(kvm, mem);
}
+void kvm_arch_flush_shadow_all(struct kvm *kvm)
+{
+}
-void kvm_arch_flush_shadow(struct kvm *kvm)
+void kvm_arch_flush_shadow_memslot(struct kvm *kvm,
+ struct kvm_memory_slot *slot)
{
}