#include "qemu-common.h"
#include "cpu.h"
#include "sysemu/sysemu.h"
+#include "sysemu/hw_accel.h"
#include "sysemu/kvm_int.h"
#include "kvm_i386.h"
#include "hyperv.h"
* 255 kvm_msr_entry structs */
#define MSR_BUF_SIZE 4096
-#ifndef BUS_MCEERR_AR
-#define BUS_MCEERR_AR 4
-#endif
-#ifndef BUS_MCEERR_AO
-#define BUS_MCEERR_AO 5
-#endif
-
const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
KVM_CAP_INFO(SET_TSS_ADDR),
KVM_CAP_INFO(EXT_CPUID),
exit(1);
}
-int kvm_arch_on_sigbus_vcpu(CPUState *c, int code, void *addr)
+void kvm_arch_on_sigbus_vcpu(CPUState *c, int code, void *addr)
{
X86CPU *cpu = X86_CPU(c);
CPUX86State *env = &cpu->env;
ram_addr_t ram_addr;
hwaddr paddr;
- if ((env->mcg_cap & MCG_SER_P) && addr
- && (code == BUS_MCEERR_AR || code == BUS_MCEERR_AO)) {
+ /* If we get an action required MCE, it has been injected by KVM
+ * while the VM was running. An action optional MCE instead should
+ * be coming from the main thread, which qemu_init_sigbus identifies
+ * as the "early kill" thread.
+ */
+ assert(code == BUS_MCEERR_AR || code == BUS_MCEERR_AO);
+
+ if ((env->mcg_cap & MCG_SER_P) && addr) {
ram_addr = qemu_ram_addr_from_host(addr);
- if (ram_addr == RAM_ADDR_INVALID ||
- !kvm_physical_memory_addr_from_host(c->kvm_state, addr, &paddr)) {
- fprintf(stderr, "Hardware memory error for memory used by "
- "QEMU itself instead of guest system!\n");
- /* Hope we are lucky for AO MCE */
- if (code == BUS_MCEERR_AO) {
- return 0;
- } else {
- hardware_memory_error();
- }
- }
- kvm_hwpoison_page_add(ram_addr);
- kvm_mce_inject(cpu, paddr, code);
- } else {
- if (code == BUS_MCEERR_AO) {
- return 0;
- } else if (code == BUS_MCEERR_AR) {
- hardware_memory_error();
- } else {
- return 1;
+ if (ram_addr != RAM_ADDR_INVALID &&
+ kvm_physical_memory_addr_from_host(c->kvm_state, addr, &paddr)) {
+ kvm_hwpoison_page_add(ram_addr);
+ kvm_mce_inject(cpu, paddr, code);
+ return;
}
- }
- return 0;
-}
-int kvm_arch_on_sigbus(int code, void *addr)
-{
- X86CPU *cpu = X86_CPU(first_cpu);
-
- if ((cpu->env.mcg_cap & MCG_SER_P) && addr && code == BUS_MCEERR_AO) {
- ram_addr_t ram_addr;
- hwaddr paddr;
+ fprintf(stderr, "Hardware memory error for memory used by "
+ "QEMU itself instead of guest system!\n");
+ }
- /* Hope we are lucky for AO MCE */
- ram_addr = qemu_ram_addr_from_host(addr);
- if (ram_addr == RAM_ADDR_INVALID ||
- !kvm_physical_memory_addr_from_host(first_cpu->kvm_state,
- addr, &paddr)) {
- fprintf(stderr, "Hardware memory error for memory used by "
- "QEMU itself instead of guest system!: %p\n", addr);
- return 0;
- }
- kvm_hwpoison_page_add(ram_addr);
- kvm_mce_inject(X86_CPU(first_cpu), paddr, code);
- } else {
- if (code == BUS_MCEERR_AO) {
- return 0;
- } else if (code == BUS_MCEERR_AR) {
- hardware_memory_error();
- } else {
- return 1;
- }
+ if (code == BUS_MCEERR_AR) {
+ hardware_memory_error();
}
- return 0;
+
+ /* Hope we are lucky for AO MCE */
}
static int kvm_inject_mce_oldstyle(X86CPU *cpu)
uint32_t signature[3];
int kvm_base = KVM_CPUID_SIGNATURE;
int r;
+ Error *local_err = NULL;
memset(&cpuid_data, 0, sizeof(cpuid_data));
has_msr_mcg_ext_ctl = has_msr_feature_control = true;
}
- c = cpuid_find_entry(&cpuid_data.cpuid, 0x80000007, 0);
- if (c && (c->edx & 1<<8) && invtsc_mig_blocker == NULL) {
- /* for migration */
- error_setg(&invtsc_mig_blocker,
- "State blocked by non-migratable CPU device"
- " (invtsc flag)");
- migrate_add_blocker(invtsc_mig_blocker);
- /* for savevm */
- vmstate_x86_cpu.unmigratable = 1;
- }
-
- cpuid_data.cpuid.padding = 0;
- r = kvm_vcpu_ioctl(cs, KVM_SET_CPUID2, &cpuid_data);
- if (r) {
- return r;
+ if (!env->user_tsc_khz) {
+ if ((env->features[FEAT_8000_0007_EDX] & CPUID_APM_INVTSC) &&
+ invtsc_mig_blocker == NULL) {
+ /* for migration */
+ error_setg(&invtsc_mig_blocker,
+ "State blocked by non-migratable CPU device"
+ " (invtsc flag)");
+ r = migrate_add_blocker(invtsc_mig_blocker, &local_err);
+ if (local_err) {
+ error_report_err(local_err);
+ error_free(invtsc_mig_blocker);
+ goto fail;
+ }
+ /* for savevm */
+ vmstate_x86_cpu.unmigratable = 1;
+ }
}
r = kvm_arch_set_tsc_khz(cs);
if (r < 0) {
- return r;
+ goto fail;
}
/* vcpu's TSC frequency is either specified by user, or following
}
}
+ if (cpu->vmware_cpuid_freq
+ /* Guests depend on 0x40000000 to detect this feature, so only expose
+ * it if KVM exposes leaf 0x40000000. (Conflicts with Hyper-V) */
+ && cpu->expose_kvm
+ && kvm_base == KVM_CPUID_SIGNATURE
+ /* TSC clock must be stable and known for this feature. */
+ && ((env->features[FEAT_8000_0007_EDX] & CPUID_APM_INVTSC)
+ || env->user_tsc_khz != 0)
+ && env->tsc_khz != 0) {
+
+ c = &cpuid_data.entries[cpuid_i++];
+ c->function = KVM_CPUID_SIGNATURE | 0x10;
+ c->eax = env->tsc_khz;
+ /* LAPIC resolution of 1ns (freq: 1GHz) is hardcoded in KVM's
+ * APIC_BUS_CYCLE_NS */
+ c->ebx = 1000000;
+ c->ecx = c->edx = 0;
+
+ c = cpuid_find_entry(&cpuid_data.cpuid, kvm_base, 0);
+ c->eax = MAX(c->eax, KVM_CPUID_SIGNATURE | 0x10);
+ }
+
+ cpuid_data.cpuid.nent = cpuid_i;
+
+ cpuid_data.cpuid.padding = 0;
+ r = kvm_vcpu_ioctl(cs, KVM_SET_CPUID2, &cpuid_data);
+ if (r) {
+ goto fail;
+ }
+
if (has_xsave) {
env->kvm_xsave_buf = qemu_memalign(4096, sizeof(struct kvm_xsave));
}
}
return 0;
+
+ fail:
+ migrate_del_blocker(invtsc_mig_blocker);
+ return r;
}
void kvm_arch_reset_vcpu(X86CPU *cpu)
projects / mirror_qemu.git / blobdiff