github/acrn-hypervisor
1
0
Fork 0
mirror of https://github.com/projectacrn/acrn-hypervisor.git synced 2025-09-21 08:50:27 +00:00
Code Issues Projects Releases Wiki Activity

Add APIC ACCESS VMexit handler

Browse Source 
Update 'apic_access_exit_handler()' function to emulate
guest instruments to read/write guest's lapic registers page

Signed-off-by: Yonghua Huang <yonghua.huang@intel.com>
This commit is contained in:
Yonghua Huang
2018-03-21 01:05:50 +08:00
committed by Jack Ren
parent 9b269aee79
commit f01a8eef58
4 changed files with 44 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
hypervisor/arch/x86/guest/vlapic.c
View File

@@ -37,6 +37,9 @@
#include <bsp_extern.h>
#include <hv_debug.h>
#include "instr_emul_wrapper.h"
#include "instr_emul.h"
#include "time.h"
#include "vlapic_priv.h"
@@ -2331,9 +2334,32 @@ apicv_inject_pir(struct vlapic *vlapic)
}
}
int apicv_access_exit_handler(__unused struct vcpu *vcpu)
int apic_access_exit_handler(struct vcpu *vcpu)
{
TRACE_2L(TRC_VMEXIT_APICV_ACCESS, 0, 0);
bool ret;
int access_type, offset;
uint64_t qual;
struct vlapic *vlapic;
qual = vcpu->arch_vcpu.exit_qualification;
access_type = APIC_ACCESS_TYPE(qual);
/*parse offset if linear access*/
if (access_type <= 3)
offset = APIC_ACCESS_OFFSET(qual);
vlapic = vcpu->arch_vcpu.vlapic;
analyze_instruction(vcpu, &vcpu->mmio);
if (access_type == 1) {
if (!emulate_instruction(vcpu, &vcpu->mmio))
vlapic_write(vlapic, 1, offset, vcpu->mmio.value, &ret);
} else if (access_type == 0) {
vlapic_read(vlapic, 1, offset, &vcpu->mmio.value, &ret);
emulate_instruction(vcpu, &vcpu->mmio);
}
TRACE_2L(TRC_VMEXIT_APICV_ACCESS, qual, (uint64_t)vlapic);
return 0;
}

2
hypervisor/arch/x86/vmexit.c
View File

@@ -125,7 +125,7 @@ static const struct vm_exit_dispatch dispatch_table[] = {
[VMX_EXIT_REASON_TPR_BELOW_THRESHOLD] = {
.handler = unhandled_vmexit_handler},
[VMX_EXIT_REASON_APIC_ACCESS] = {
.handler = apicv_access_exit_handler,
.handler = apic_access_exit_handler,
.need_exit_qualification = 1},
[VMX_EXIT_REASON_VIRTUALIZED_EOI] = {
.handler = apicv_virtualized_eoi_exit_handler,