diff options
| author | Joerg Roedel <joerg.roedel@amd.com> | 2011-04-04 12:39:35 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-05-11 07:57:03 -0400 |
| commit | f6511935f424b9a25059ae18e91ad11dd24980e6 (patch) | |
| tree | 8f3b8108255f943b2e3f355a9cdd12d31c92c16e /arch/x86/kvm/svm.c | |
| parent | bf608f88faef1245ff87e731512517fc676ffe02 (diff) | |
KVM: SVM: Add checks for IO instructions
This patch adds code to check for IOIO intercepts on
instructions decoded by the KVM instruction emulator.
[avi: fix build error due to missing #define D2bvIP]
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/svm.c')
| -rw-r--r-- | arch/x86/kvm/svm.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 9eb27100e2ea..5c6512dbac7c 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -3925,6 +3925,10 @@ static struct __x86_intercept { [x86_intercept_iret] = PRE_EX(SVM_EXIT_IRET), [x86_intercept_icebp] = PRE_EX(SVM_EXIT_ICEBP), [x86_intercept_hlt] = POST_EX(SVM_EXIT_HLT), + [x86_intercept_in] = POST_EX(SVM_EXIT_IOIO), + [x86_intercept_ins] = POST_EX(SVM_EXIT_IOIO), + [x86_intercept_out] = POST_EX(SVM_EXIT_IOIO), + [x86_intercept_outs] = POST_EX(SVM_EXIT_IOIO), }; #undef PRE_EX @@ -4001,6 +4005,38 @@ static int svm_check_intercept(struct kvm_vcpu *vcpu, */ if (info->rep_prefix != REPE_PREFIX) goto out; + case SVM_EXIT_IOIO: { + u64 exit_info; + u32 bytes; + + exit_info = (vcpu->arch.regs[VCPU_REGS_RDX] & 0xffff) << 16; + + if (info->intercept == x86_intercept_in || + info->intercept == x86_intercept_ins) { + exit_info |= SVM_IOIO_TYPE_MASK; + bytes = info->src_bytes; + } else { + bytes = info->dst_bytes; + } + + if (info->intercept == x86_intercept_outs || + info->intercept == x86_intercept_ins) + exit_info |= SVM_IOIO_STR_MASK; + + if (info->rep_prefix) + exit_info |= SVM_IOIO_REP_MASK; + + bytes = min(bytes, 4u); + + exit_info |= bytes << SVM_IOIO_SIZE_SHIFT; + + exit_info |= (u32)info->ad_bytes << (SVM_IOIO_ASIZE_SHIFT - 1); + + vmcb->control.exit_info_1 = exit_info; + vmcb->control.exit_info_2 = info->next_rip; + + break; + } default: break; } |