lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

KVM: x86: Add x86 callback for intercept check

Browse Source 
This patch adds a callback into kvm_x86_ops so that svm and
vmx code can do intercept checks on emulated instructions.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Joerg Roedel
2011-04-04 12:39:27 +02:00
committed by Avi Kivity
parent 8ea7d6aef8
commit 8a76d7f25f
6 changed files with 74 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
arch/x86/include/asm/kvm_emulate.h
View File

@@ -25,6 +25,24 @@ struct x86_exception {
u64 address; /* cr2 or nested page fault gpa */
};
/*
* This struct is used to carry enough information from the instruction
* decoder to main KVM so that a decision can be made whether the
* instruction needs to be intercepted or not.
*/
struct x86_instruction_info {
u8 intercept; /* which intercept */
u8 rep_prefix; /* rep prefix? */
u8 modrm_mod; /* mod part of modrm */
u8 modrm_reg; /* index of register used */
u8 modrm_rm; /* rm part of modrm */
u64 src_val; /* value of source operand */
u8 src_bytes; /* size of source operand */
u8 dst_bytes; /* size of destination operand */
u8 ad_bytes; /* size of src/dst address */
u64 next_rip; /* rip following the instruction */
};
/*
* x86_emulate_ops:
*
@@ -163,8 +181,8 @@ struct x86_emulate_ops {
int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
void (*get_fpu)(struct x86_emulate_ctxt *ctxt); /* disables preempt */
void (*put_fpu)(struct x86_emulate_ctxt *ctxt); /* reenables preempt */
int (*intercept)(struct x86_emulate_ctxt *ctxt,
enum x86_intercept intercept,
int (*intercept)(struct kvm_vcpu *vcpu,
struct x86_instruction_info *info,
enum x86_intercept_stage stage);
};