/*
* svm_disable() - Called to disable SVM extensions on every processor.
*/
static int svm_disable(void) {
uint64_t efer;
int origcpu;
int i;
/* XXX Wait till no vmms are running? */
KKASSERT(svm_enabled == 1);
origcpu = mycpuid;
for (i = 0; i < ncpus; i++) {
lwkt_migratecpu(i);
wrmsr(MSR_AMD_VM_HSAVE_PA, 0);
contigfree((void *) vm_hsave_va[i], 4096, M_TEMP);
vm_hsave_va[i] = 0;
efer = rdmsr(MSR_EFER);
efer &= ~EFER_SVME;
wrmsr(MSR_EFER, efer);
}
lwkt_migratecpu(origcpu);
svm_enabled = 0;
return (0);
}
/*
* svm_enable() - Called to enable SVM extensions on every processor.
*/
static int svm_enable(void) {
uint64_t efer;
int origcpu;
int i;
vm_paddr_t vm_hsave_pa;
if (!svm_available)
return (ENODEV);
KKASSERT(svm_enabled == 0);
/* Set EFER.SVME and allocate a VM Host Save Area on every cpu */
origcpu = mycpuid;
for (i = 0; i < ncpus; i++) {
lwkt_migratecpu(i);
efer = rdmsr(MSR_EFER);
efer |= EFER_SVME;
wrmsr(MSR_EFER, efer);
vm_hsave_va[i] = (vm_offset_t) contigmalloc(4096, M_TEMP,
M_WAITOK | M_ZERO,
0, 0xffffffff,
4096, 0);
vm_hsave_pa = vtophys(vm_hsave_va[i]);
wrmsr(MSR_AMD_VM_HSAVE_PA, vm_hsave_pa);
}
lwkt_migratecpu(origcpu);
svm_enabled = 1;
return (0);
}
static int
udp_getcred(SYSCTL_HANDLER_ARGS)
{
struct sockaddr_in addrs[2];
struct ucred cred0, *cred = NULL;
struct inpcb *inp;
int error, cpu, origcpu;
error = priv_check(req->td, PRIV_ROOT);
if (error)
return (error);
error = SYSCTL_IN(req, addrs, sizeof addrs);
if (error)
return (error);
origcpu = mycpuid;
cpu = udp_addrcpu(addrs[1].sin_addr.s_addr, addrs[1].sin_port,
addrs[0].sin_addr.s_addr, addrs[0].sin_port);
lwkt_migratecpu(cpu);
inp = in_pcblookup_hash(&udbinfo[cpu],
addrs[1].sin_addr, addrs[1].sin_port,
addrs[0].sin_addr, addrs[0].sin_port, TRUE, NULL);
if (inp == NULL || inp->inp_socket == NULL) {
error = ENOENT;
} else if (inp->inp_socket->so_cred != NULL) {
cred0 = *(inp->inp_socket->so_cred);
cred = &cred0;
}
lwkt_migratecpu(origcpu);
if (error)
return error;
return SYSCTL_OUT(req, cred, sizeof(struct ucred));
}
