summaryrefslogtreecommitdiff
path: root/include
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2011-05-23 08:42:08 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-05-23 08:42:08 -0700
commitf4b10bc60a310916bab5413f821b99ef845cac17 (patch)
tree904532e8cd93b88261f21427c4ec4917d4b3e79d /include
parent53ee7569ce8beb3fd3fc0817116c29298d72353f (diff)
parentc8cfbb555eb3632bf3dcbe1a591c1f4d0c28681c (diff)
Merge branch 'kvm-updates/2.6.40' of git://git.kernel.org/pub/scm/virt/kvm/kvm
* 'kvm-updates/2.6.40' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (131 commits) KVM: MMU: Use ptep_user for cmpxchg_gpte() KVM: Fix kvm mmu_notifier initialization order KVM: Add documentation for KVM_CAP_NR_VCPUS KVM: make guest mode entry to be rcu quiescent state KVM: x86 emulator: Make jmp far emulation into a separate function KVM: x86 emulator: Rename emulate_grpX() to em_grpX() KVM: x86 emulator: Remove unused arg from emulate_pop() KVM: x86 emulator: Remove unused arg from writeback() KVM: x86 emulator: Remove unused arg from read_descriptor() KVM: x86 emulator: Remove unused arg from seg_override() KVM: Validate userspace_addr of memslot when registered KVM: MMU: Clean up gpte reading with copy_from_user() KVM: PPC: booke: add sregs support KVM: PPC: booke: save/restore VRSAVE (a.k.a. USPRG0) KVM: PPC: use ticks, not usecs, for exit timing KVM: PPC: fix exit accounting for SPRs, tlbwe, tlbsx KVM: PPC: e500: emulate SVR KVM: VMX: Cache vmcs segment fields KVM: x86 emulator: consolidate segment accessors KVM: VMX: Avoid reading %rip unnecessarily when handling exceptions ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/kvm.h6
-rw-r--r--include/linux/kvm_host.h30
2 files changed, 30 insertions, 6 deletions
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index ea2dc1a2e13d..55ef181521ff 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -541,6 +541,9 @@ struct kvm_ppc_pvinfo {
#define KVM_CAP_PPC_GET_PVINFO 57
#define KVM_CAP_PPC_IRQ_LEVEL 58
#define KVM_CAP_ASYNC_PF 59
+#define KVM_CAP_TSC_CONTROL 60
+#define KVM_CAP_GET_TSC_KHZ 61
+#define KVM_CAP_PPC_BOOKE_SREGS 62
#ifdef KVM_CAP_IRQ_ROUTING
@@ -677,6 +680,9 @@ struct kvm_clock_data {
#define KVM_SET_PIT2 _IOW(KVMIO, 0xa0, struct kvm_pit_state2)
/* Available with KVM_CAP_PPC_GET_PVINFO */
#define KVM_PPC_GET_PVINFO _IOW(KVMIO, 0xa1, struct kvm_ppc_pvinfo)
+/* Available with KVM_CAP_TSC_CONTROL */
+#define KVM_SET_TSC_KHZ _IO(KVMIO, 0xa2)
+#define KVM_GET_TSC_KHZ _IO(KVMIO, 0xa3)
/*
* ioctls for vcpu fds
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index ab428552af8e..b9c3299c6a55 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -27,6 +27,10 @@
#include <asm/kvm_host.h>
+#ifndef KVM_MMIO_SIZE
+#define KVM_MMIO_SIZE 8
+#endif
+
/*
* vcpu->requests bit members
*/
@@ -43,7 +47,6 @@
#define KVM_REQ_DEACTIVATE_FPU 10
#define KVM_REQ_EVENT 11
#define KVM_REQ_APF_HALT 12
-#define KVM_REQ_NMI 13
#define KVM_USERSPACE_IRQ_SOURCE_ID 0
@@ -133,7 +136,8 @@ struct kvm_vcpu {
int mmio_read_completed;
int mmio_is_write;
int mmio_size;
- unsigned char mmio_data[8];
+ int mmio_index;
+ unsigned char mmio_data[KVM_MMIO_SIZE];
gpa_t mmio_phys_addr;
#endif
@@ -292,9 +296,10 @@ static inline struct kvm_vcpu *kvm_get_vcpu(struct kvm *kvm, int i)
}
#define kvm_for_each_vcpu(idx, vcpup, kvm) \
- for (idx = 0, vcpup = kvm_get_vcpu(kvm, idx); \
- idx < atomic_read(&kvm->online_vcpus) && vcpup; \
- vcpup = kvm_get_vcpu(kvm, ++idx))
+ for (idx = 0; \
+ idx < atomic_read(&kvm->online_vcpus) && \
+ (vcpup = kvm_get_vcpu(kvm, idx)) != NULL; \
+ idx++)
int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
@@ -365,7 +370,6 @@ pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault,
bool *writable);
pfn_t gfn_to_pfn_memslot(struct kvm *kvm,
struct kvm_memory_slot *slot, gfn_t gfn);
-int memslot_id(struct kvm *kvm, gfn_t gfn);
void kvm_release_pfn_dirty(pfn_t);
void kvm_release_pfn_clean(pfn_t pfn);
void kvm_set_pfn_dirty(pfn_t pfn);
@@ -587,8 +591,17 @@ static inline int kvm_deassign_device(struct kvm *kvm,
static inline void kvm_guest_enter(void)
{
+ BUG_ON(preemptible());
account_system_vtime(current);
current->flags |= PF_VCPU;
+ /* KVM does not hold any references to rcu protected data when it
+ * switches CPU into a guest mode. In fact switching to a guest mode
+ * is very similar to exiting to userspase from rcu point of view. In
+ * addition CPU may stay in a guest mode for quite a long time (up to
+ * one time slice). Lets treat guest mode as quiescent state, just like
+ * we do with user-mode execution.
+ */
+ rcu_virt_note_context_switch(smp_processor_id());
}
static inline void kvm_guest_exit(void)
@@ -597,6 +610,11 @@ static inline void kvm_guest_exit(void)
current->flags &= ~PF_VCPU;
}
+static inline int memslot_id(struct kvm *kvm, gfn_t gfn)
+{
+ return gfn_to_memslot(kvm, gfn)->id;
+}
+
static inline unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot,
gfn_t gfn)
{