Merge tag 'signed-kvm-ppc-queue' of git://github.com/agraf/linux-2.6 into kvm-master
Patch queue for ppc - 2015-04-21
This is the latest queue for KVM on PowerPC changes. Highlights this
time around:
- Book3S HV: Debugging aids
- Book3S HV: Minor performance improvements
- Book3S HV: Cleanups
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index afa2bd7..8cd8e7b 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -110,7 +110,7 @@
/* upper facilities limit for kvm */
unsigned long kvm_s390_fac_list_mask[] = {
0xffe6fffbfcfdfc40UL,
- 0x205c800000000000UL,
+ 0x005c800000000000UL,
};
unsigned long kvm_s390_fac_list_mask_size(void)
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index d67206a..629af0f 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -683,8 +683,7 @@
unsigned long bitmap = 1;
struct kvm_lapic **dst;
int i;
- bool ret = false;
- bool x2apic_ipi = src && apic_x2apic_mode(src);
+ bool ret, x2apic_ipi;
*r = -1;
@@ -696,16 +695,18 @@
if (irq->shorthand)
return false;
+ x2apic_ipi = src && apic_x2apic_mode(src);
if (irq->dest_id == (x2apic_ipi ? X2APIC_BROADCAST : APIC_BROADCAST))
return false;
+ ret = true;
rcu_read_lock();
map = rcu_dereference(kvm->arch.apic_map);
- if (!map)
+ if (!map) {
+ ret = false;
goto out;
-
- ret = true;
+ }
if (irq->dest_mode == APIC_DEST_PHYSICAL) {
if (irq->dest_id >= ARRAY_SIZE(map->phys_map))
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 146f295..d43867c 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -4481,9 +4481,11 @@
pfn = spte_to_pfn(*sptep);
/*
- * Only EPT supported for now; otherwise, one would need to
- * find out efficiently whether the guest page tables are
- * also using huge pages.
+ * We cannot do huge page mapping for indirect shadow pages,
+ * which are found on the last rmap (level = 1) when not using
+ * tdp; such shadow pages are synced with the page table in
+ * the guest, and the guest page table is using 4K page size
+ * mapping if the indirect sp has level = 1.
*/
if (sp->role.direct &&
!kvm_is_reserved_pfn(pfn) &&
@@ -4504,19 +4506,12 @@
bool flush = false;
unsigned long *rmapp;
unsigned long last_index, index;
- gfn_t gfn_start, gfn_end;
spin_lock(&kvm->mmu_lock);
- gfn_start = memslot->base_gfn;
- gfn_end = memslot->base_gfn + memslot->npages - 1;
-
- if (gfn_start >= gfn_end)
- goto out;
-
rmapp = memslot->arch.rmap[0];
- last_index = gfn_to_index(gfn_end, memslot->base_gfn,
- PT_PAGE_TABLE_LEVEL);
+ last_index = gfn_to_index(memslot->base_gfn + memslot->npages - 1,
+ memslot->base_gfn, PT_PAGE_TABLE_LEVEL);
for (index = 0; index <= last_index; ++index, ++rmapp) {
if (*rmapp)
@@ -4534,7 +4529,6 @@
if (flush)
kvm_flush_remote_tlbs(kvm);
-out:
spin_unlock(&kvm->mmu_lock);
}
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index f5e8dce..f7b6168 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -3622,8 +3622,16 @@
static int vmx_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
{
- unsigned long hw_cr4 = cr4 | (to_vmx(vcpu)->rmode.vm86_active ?
- KVM_RMODE_VM_CR4_ALWAYS_ON : KVM_PMODE_VM_CR4_ALWAYS_ON);
+ /*
+ * Pass through host's Machine Check Enable value to hw_cr4, which
+ * is in force while we are in guest mode. Do not let guests control
+ * this bit, even if host CR4.MCE == 0.
+ */
+ unsigned long hw_cr4 =
+ (cr4_read_shadow() & X86_CR4_MCE) |
+ (cr4 & ~X86_CR4_MCE) |
+ (to_vmx(vcpu)->rmode.vm86_active ?
+ KVM_RMODE_VM_CR4_ALWAYS_ON : KVM_PMODE_VM_CR4_ALWAYS_ON);
if (cr4 & X86_CR4_VMXE) {
/*
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index e1a8126..ed31c31 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -5799,7 +5799,6 @@
kvm_set_mmio_spte_mask();
kvm_x86_ops = ops;
- kvm_init_msr_list();
kvm_mmu_set_mask_ptes(PT_USER_MASK, PT_ACCESSED_MASK,
PT_DIRTY_MASK, PT64_NX_MASK, 0);
@@ -7253,7 +7252,14 @@
int kvm_arch_hardware_setup(void)
{
- return kvm_x86_ops->hardware_setup();
+ int r;
+
+ r = kvm_x86_ops->hardware_setup();
+ if (r != 0)
+ return r;
+
+ kvm_init_msr_list();
+ return 0;
}
void kvm_arch_hardware_unsetup(void)