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hv: shutdown guest VM upon triple fault exceptions

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This patch implements triple fault vmexit handler and base on VM types:

- post-launched VMs: shutdown_target_vm() injects S5 PIO write to request
  DM to shut down the target VM.
- pre-launched VMs: shut down the guest.
- SOS: similarly, but shut down all the non real-time post-launched VMs that
  depend to SOS before shutting down SOS.

Tracked-On: #2700
Signed-off-by: Zide Chen <zide.chen@intel.com>
Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Zide Chen
2019-05-08 22:39:05 -07:00
committed by wenlingz
parent 9aa3fe646b
commit 26f08680eb
3 changed files with 62 additions and 1 deletions
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13
hypervisor/arch/x86/guest/vmexit.c
View File

@@ -12,6 +12,7 @@
#include <vcpu.h>
#include <vm.h>
#include <vmexit.h>
#include <vm_reset.h>
#include <vmx_io.h>
#include <ept.h>
#include <vtd.h>
@@ -24,6 +25,7 @@
*/
#define NR_VMX_EXIT_REASONS 65U
static int32_t triple_fault_vmexit_handler(struct acrn_vcpu *vcpu);
static int32_t unhandled_vmexit_handler(struct acrn_vcpu *vcpu);
static int32_t xsetbv_vmexit_handler(struct acrn_vcpu *vcpu);
static int32_t wbinvd_vmexit_handler(struct acrn_vcpu *vcpu);
@@ -37,7 +39,7 @@ static const struct vm_exit_dispatch dispatch_table[NR_VMX_EXIT_REASONS] = {
[VMX_EXIT_REASON_EXTERNAL_INTERRUPT] = {
.handler = external_interrupt_vmexit_handler},
[VMX_EXIT_REASON_TRIPLE_FAULT] = {
.handler = unhandled_vmexit_handler},
.handler = triple_fault_vmexit_handler},
[VMX_EXIT_REASON_INIT_SIGNAL] = {
.handler = init_signal_vmexit_handler},
[VMX_EXIT_REASON_STARTUP_IPI] = {
@@ -249,6 +251,15 @@ static int32_t unhandled_vmexit_handler(struct acrn_vcpu *vcpu)
return 0;
}
static int32_t triple_fault_vmexit_handler(struct acrn_vcpu *vcpu)
{
pr_fatal("VM%d: triple fault @ guest RIP 0x%016llx, exit qualification: 0x%016llx",
vcpu->vm->vm_id, exec_vmread(VMX_GUEST_RIP), exec_vmread(VMX_EXIT_QUALIFICATION));
triple_fault_shutdown_vm(vcpu->vm);
return 0;
}
int32_t cpuid_vmexit_handler(struct acrn_vcpu *vcpu)
{
uint64_t rax, rbx, rcx, rdx;