aboutsummaryrefslogtreecommitdiff
path: root/arch/x86/include/asm
diff options
context:
space:
mode:
authorAlexander Graf <agraf@suse.de>2008-11-25 20:17:04 +0100
committerAvi Kivity <avi@redhat.com>2009-03-24 11:02:46 +0200
commit1371d90460189d02bf1bcca19dbfe6bd10dc6031 (patch)
tree2f1f8d6bf0cd55e253784a061332c02e8e2d9e9d /arch/x86/include/asm
parentc0725420cfdcf6dd9705b164a8c6cba86684080d (diff)
KVM: SVM: Implement GIF, clgi and stgi
This patch implements the GIF flag and the clgi and stgi instructions that set this flag. Only if the flag is set (default), interrupts can be received by the CPU. To keep the information about that somewhere, this patch adds a new hidden flags vector. that is used to store information that does not go into the vmcb, but is SVM specific. I tried to write some code to make -no-kvm-irqchip work too, but the first level guest won't even boot with that atm, so I ditched it. v2 moves the hflags to x86 generic code v3 makes use of the new permission helper v6 only enables interrupt_window if GIF=1 Acked-by: Joerg Roedel <joro@8bytes.org> Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/include/asm')
-rw-r--r--arch/x86/include/asm/kvm_host.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 2998efe8927..29e4157732d 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -259,6 +259,7 @@ struct kvm_vcpu_arch {
unsigned long cr3;
unsigned long cr4;
unsigned long cr8;
+ u32 hflags;
u64 pdptrs[4]; /* pae */
u64 shadow_efer;
u64 apic_base;
@@ -738,6 +739,8 @@ enum {
TASK_SWITCH_GATE = 3,
};
+#define HF_GIF_MASK (1 << 0)
+
/*
* Hardware virtualization extension instructions may fault if a
* reboot turns off virtualization while processes are running.