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Add helper functions to populate VM exit information for rendezvous and

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astpending exits. This is to reduce code duplication between VT-x and
SVM implementations.
This commit is contained in:
Neel Natu 2014-06-10 16:45:58 +00:00
parent 00db3c6309
commit 404874659f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=267330
3 changed files with 36 additions and 32 deletions
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2
sys/amd64/include/vmm.h
View File

@ -146,6 +146,8 @@ cpuset_t vm_active_cpus(struct vm *vm);
cpuset_t vm_suspended_cpus(struct vm *vm);
struct vm_exit *vm_exitinfo(struct vm *vm, int vcpuid);
void vm_exit_suspended(struct vm *vm, int vcpuid, uint64_t rip);
void vm_exit_rendezvous(struct vm *vm, int vcpuid, uint64_t rip);
void vm_exit_astpending(struct vm *vm, int vcpuid, uint64_t rip);
/*
* Rendezvous all vcpus specified in 'dest' and execute 'func(arg)'.

40
sys/amd64/vmm/intel/vmx.c
View File

@ -2263,32 +2263,7 @@ vmx_exit_process(struct vmx *vmx, int vcpu, struct vm_exit *vmexit)
return (handled);
}
static __inline int
vmx_exit_astpending(struct vmx *vmx, int vcpu, struct vm_exit *vmexit)
{
vmexit->rip = vmcs_guest_rip();
vmexit->inst_length = 0;
vmexit->exitcode = VM_EXITCODE_BOGUS;
vmx_astpending_trace(vmx, vcpu, vmexit->rip);
vmm_stat_incr(vmx->vm, vcpu, VMEXIT_ASTPENDING, 1);
return (HANDLED);
}
static __inline int
vmx_exit_rendezvous(struct vmx *vmx, int vcpu, struct vm_exit *vmexit)
{
vmexit->rip = vmcs_guest_rip();
vmexit->inst_length = 0;
vmexit->exitcode = VM_EXITCODE_RENDEZVOUS;
vmm_stat_incr(vmx->vm, vcpu, VMEXIT_RENDEZVOUS, 1);
return (UNHANDLED);
}
static __inline int
static __inline void
vmx_exit_inst_error(struct vmxctx *vmxctx, int rc, struct vm_exit *vmexit)
{
@ -2312,8 +2287,6 @@ vmx_exit_inst_error(struct vmxctx *vmxctx, int rc, struct vm_exit *vmexit)
default:
panic("vm_exit_inst_error: vmx_enter_guest returned %d", rc);
}
return (UNHANDLED);
}
/*
@ -2386,6 +2359,8 @@ vmx_run(void *arg, int vcpu, register_t startrip, pmap_t pmap,
vmcs_write(VMCS_GUEST_RIP, startrip);
vmx_set_pcpu_defaults(vmx, vcpu, pmap);
do {
handled = UNHANDLED;
/*
* Interrupts are disabled from this point on until the
* guest starts executing. This is done for the following
@ -2408,19 +2383,20 @@ vmx_run(void *arg, int vcpu, register_t startrip, pmap_t pmap,
if (vcpu_suspended(suspend_cookie)) {
enable_intr();
vm_exit_suspended(vmx->vm, vcpu, vmcs_guest_rip());
handled = UNHANDLED;
break;
}
if (vcpu_rendezvous_pending(rendezvous_cookie)) {
enable_intr();
handled = vmx_exit_rendezvous(vmx, vcpu, vmexit);
vm_exit_rendezvous(vmx->vm, vcpu, vmcs_guest_rip());
break;
}
if (curthread->td_flags & (TDF_ASTPENDING | TDF_NEEDRESCHED)) {
enable_intr();
handled = vmx_exit_astpending(vmx, vcpu, vmexit);
vm_exit_astpending(vmx->vm, vcpu, vmcs_guest_rip());
vmx_astpending_trace(vmx, vcpu, vmexit->rip);
handled = HANDLED;
break;
}
@ -2440,7 +2416,7 @@ vmx_run(void *arg, int vcpu, register_t startrip, pmap_t pmap,
handled = vmx_exit_process(vmx, vcpu, vmexit);
} else {
enable_intr();
handled = vmx_exit_inst_error(vmxctx, rc, vmexit);
vmx_exit_inst_error(vmxctx, rc, vmexit);
}
launched = 1;
vmx_exit_trace(vmx, vcpu, rip, exit_reason, handled);

26
sys/amd64/vmm/vmm.c
View File

@ -1331,6 +1331,32 @@ vm_exit_suspended(struct vm *vm, int vcpuid, uint64_t rip)
vmexit->u.suspended.how = vm->suspend;
}
void
vm_exit_rendezvous(struct vm *vm, int vcpuid, uint64_t rip)
{
struct vm_exit *vmexit;
KASSERT(vm->rendezvous_func != NULL, ("rendezvous not in progress"));
vmexit = vm_exitinfo(vm, vcpuid);
vmexit->rip = rip;
vmexit->inst_length = 0;
vmexit->exitcode = VM_EXITCODE_RENDEZVOUS;
vmm_stat_incr(vm, vcpuid, VMEXIT_RENDEZVOUS, 1);
}
void
vm_exit_astpending(struct vm *vm, int vcpuid, uint64_t rip)
{
struct vm_exit *vmexit;
vmexit = vm_exitinfo(vm, vcpuid);
vmexit->rip = rip;
vmexit->inst_length = 0;
vmexit->exitcode = VM_EXITCODE_BOGUS;
vmm_stat_incr(vm, vcpuid, VMEXIT_ASTPENDING, 1);
}
int
vm_run(struct vm *vm, struct vm_run *vmrun)
{