#include <linux/file.h>
#include <linux/fs.h>
#include <linux/mount.h>
+#include <linux/sched.h>
#include "x86_emulate.h"
#include "segment_descriptor.h"
static LIST_HEAD(vm_list);
struct kvm_arch_ops *kvm_arch_ops;
-struct kvm_stat kvm_stat;
-EXPORT_SYMBOL_GPL(kvm_stat);
+
+#define STAT_OFFSET(x) offsetof(struct kvm_vcpu, stat.x)
static struct kvm_stats_debugfs_item {
const char *name;
- u32 *data;
+ int offset;
struct dentry *dentry;
} debugfs_entries[] = {
- { "pf_fixed", &kvm_stat.pf_fixed },
- { "pf_guest", &kvm_stat.pf_guest },
- { "tlb_flush", &kvm_stat.tlb_flush },
- { "invlpg", &kvm_stat.invlpg },
- { "exits", &kvm_stat.exits },
- { "io_exits", &kvm_stat.io_exits },
- { "mmio_exits", &kvm_stat.mmio_exits },
- { "signal_exits", &kvm_stat.signal_exits },
- { "irq_window", &kvm_stat.irq_window_exits },
- { "halt_exits", &kvm_stat.halt_exits },
- { "request_irq", &kvm_stat.request_irq_exits },
- { "irq_exits", &kvm_stat.irq_exits },
- { NULL, NULL }
+ { "pf_fixed", STAT_OFFSET(pf_fixed) },
+ { "pf_guest", STAT_OFFSET(pf_guest) },
+ { "tlb_flush", STAT_OFFSET(tlb_flush) },
+ { "invlpg", STAT_OFFSET(invlpg) },
+ { "exits", STAT_OFFSET(exits) },
+ { "io_exits", STAT_OFFSET(io_exits) },
+ { "mmio_exits", STAT_OFFSET(mmio_exits) },
+ { "signal_exits", STAT_OFFSET(signal_exits) },
+ { "irq_window", STAT_OFFSET(irq_window_exits) },
+ { "halt_exits", STAT_OFFSET(halt_exits) },
+ { "request_irq", STAT_OFFSET(request_irq_exits) },
+ { "irq_exits", STAT_OFFSET(irq_exits) },
+ { NULL }
};
static struct dentry *debugfs_dir;
void lmsw(struct kvm_vcpu *vcpu, unsigned long msw)
{
- kvm_arch_ops->decache_cr0_cr4_guest_bits(vcpu);
set_cr0(vcpu, (vcpu->cr0 & ~0x0ful) | (msw & 0x0f));
}
EXPORT_SYMBOL_GPL(lmsw);
}
static int emulator_read_std(unsigned long addr,
- unsigned long *val,
+ void *val,
unsigned int bytes,
struct x86_emulate_ctxt *ctxt)
{
}
static int emulator_write_std(unsigned long addr,
- unsigned long val,
+ const void *val,
unsigned int bytes,
struct x86_emulate_ctxt *ctxt)
{
}
static int emulator_read_emulated(unsigned long addr,
- unsigned long *val,
+ void *val,
unsigned int bytes,
struct x86_emulate_ctxt *ctxt)
{
}
static int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
- unsigned long val, int bytes)
+ const void *val, int bytes)
{
struct page *page;
void *virt;
kvm_mmu_pre_write(vcpu, gpa, bytes);
mark_page_dirty(vcpu->kvm, gpa >> PAGE_SHIFT);
virt = kmap_atomic(page, KM_USER0);
- memcpy(virt + offset_in_page(gpa), &val, bytes);
+ memcpy(virt + offset_in_page(gpa), val, bytes);
kunmap_atomic(virt, KM_USER0);
kvm_mmu_post_write(vcpu, gpa, bytes);
return 1;
}
static int emulator_write_emulated(unsigned long addr,
- unsigned long val,
+ const void *val,
unsigned int bytes,
struct x86_emulate_ctxt *ctxt)
{
vcpu->mmio_phys_addr = gpa;
vcpu->mmio_size = bytes;
vcpu->mmio_is_write = 1;
- memcpy(vcpu->mmio_data, &val, bytes);
+ memcpy(vcpu->mmio_data, val, bytes);
return X86EMUL_CONTINUE;
}
static int emulator_cmpxchg_emulated(unsigned long addr,
- unsigned long old,
- unsigned long new,
+ const void *old,
+ const void *new,
unsigned int bytes,
struct x86_emulate_ctxt *ctxt)
{
return emulator_write_emulated(addr, new, bytes, ctxt);
}
-#ifdef CONFIG_X86_32
-
-static int emulator_cmpxchg8b_emulated(unsigned long addr,
- unsigned long old_lo,
- unsigned long old_hi,
- unsigned long new_lo,
- unsigned long new_hi,
- struct x86_emulate_ctxt *ctxt)
-{
- static int reported;
- int r;
-
- if (!reported) {
- reported = 1;
- printk(KERN_WARNING "kvm: emulating exchange8b as write\n");
- }
- r = emulator_write_emulated(addr, new_lo, 4, ctxt);
- if (r != X86EMUL_CONTINUE)
- return r;
- return emulator_write_emulated(addr+4, new_hi, 4, ctxt);
-}
-
-#endif
-
static unsigned long get_segment_base(struct kvm_vcpu *vcpu, int seg)
{
return kvm_arch_ops->get_segment_base(vcpu, seg);
{
unsigned long cr0;
- kvm_arch_ops->decache_cr0_cr4_guest_bits(vcpu);
cr0 = vcpu->cr0 & ~CR0_TS_MASK;
kvm_arch_ops->set_cr0(vcpu, cr0);
return X86EMUL_CONTINUE;
.read_emulated = emulator_read_emulated,
.write_emulated = emulator_write_emulated,
.cmpxchg_emulated = emulator_cmpxchg_emulated,
-#ifdef CONFIG_X86_32
- .cmpxchg8b_emulated = emulator_cmpxchg8b_emulated,
-#endif
};
int emulate_instruction(struct kvm_vcpu *vcpu,
int r;
int cs_db, cs_l;
+ vcpu->mmio_fault_cr2 = cr2;
kvm_arch_ops->cache_regs(vcpu);
kvm_arch_ops->get_cs_db_l_bits(vcpu, &cs_db, &cs_l);
kvm_arch_ops->decache_regs(vcpu);
kvm_arch_ops->set_rflags(vcpu, emulate_ctxt.eflags);
- if (vcpu->mmio_is_write)
+ if (vcpu->mmio_is_write) {
+ vcpu->mmio_needed = 0;
return EMULATE_DO_MMIO;
+ }
return EMULATE_DONE;
}
unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr)
{
- kvm_arch_ops->decache_cr0_cr4_guest_bits(vcpu);
+ kvm_arch_ops->decache_cr4_guest_bits(vcpu);
switch (cr) {
case 0:
return vcpu->cr0;
vcpu->regs[VCPU_REGS_RSI] += delta;
}
- vcpu->run->io_completed = 0;
-
kvm_arch_ops->decache_regs(vcpu);
io->count -= io->cur_count;
/* re-sync apic's tpr */
vcpu->cr8 = kvm_run->cr8;
- if (kvm_run->io_completed) {
- if (vcpu->pio.cur_count) {
- r = complete_pio(vcpu);
- if (r)
- goto out;
- } else {
- memcpy(vcpu->mmio_data, kvm_run->mmio.data, 8);
- vcpu->mmio_read_completed = 1;
- }
+ if (vcpu->pio.cur_count) {
+ r = complete_pio(vcpu);
+ if (r)
+ goto out;
}
- vcpu->mmio_needed = 0;
+ if (vcpu->mmio_needed) {
+ memcpy(vcpu->mmio_data, kvm_run->mmio.data, 8);
+ vcpu->mmio_read_completed = 1;
+ vcpu->mmio_needed = 0;
+ r = emulate_instruction(vcpu, kvm_run,
+ vcpu->mmio_fault_cr2, 0);
+ if (r == EMULATE_DO_MMIO) {
+ /*
+ * Read-modify-write. Back to userspace.
+ */
+ kvm_run->exit_reason = KVM_EXIT_MMIO;
+ r = 0;
+ goto out;
+ }
+ }
if (kvm_run->exit_reason == KVM_EXIT_HYPERCALL) {
kvm_arch_ops->cache_regs(vcpu);
sregs->gdt.limit = dt.limit;
sregs->gdt.base = dt.base;
- kvm_arch_ops->decache_cr0_cr4_guest_bits(vcpu);
+ kvm_arch_ops->decache_cr4_guest_bits(vcpu);
sregs->cr0 = vcpu->cr0;
sregs->cr2 = vcpu->cr2;
sregs->cr3 = vcpu->cr3;
#endif
vcpu->apic_base = sregs->apic_base;
- kvm_arch_ops->decache_cr0_cr4_guest_bits(vcpu);
+ kvm_arch_ops->decache_cr4_guest_bits(vcpu);
mmu_reset_needed |= vcpu->cr0 != sregs->cr0;
kvm_arch_ops->set_cr0(vcpu, sregs->cr0);
switch (val) {
case CPU_DOWN_PREPARE:
+ case CPU_DOWN_PREPARE_FROZEN:
case CPU_UP_CANCELED:
+ case CPU_UP_CANCELED_FROZEN:
printk(KERN_INFO "kvm: disabling virtualization on CPU%d\n",
cpu);
decache_vcpus_on_cpu(cpu);
NULL, 0, 1);
break;
case CPU_ONLINE:
+ case CPU_ONLINE_FROZEN:
printk(KERN_INFO "kvm: enabling virtualization on CPU%d\n",
cpu);
smp_call_function_single(cpu, kvm_arch_ops->hardware_enable,
.priority = 20, /* must be > scheduler priority */
};
+static u64 stat_get(void *_offset)
+{
+ unsigned offset = (long)_offset;
+ u64 total = 0;
+ struct kvm *kvm;
+ struct kvm_vcpu *vcpu;
+ int i;
+
+ spin_lock(&kvm_lock);
+ list_for_each_entry(kvm, &vm_list, vm_list)
+ for (i = 0; i < KVM_MAX_VCPUS; ++i) {
+ vcpu = &kvm->vcpus[i];
+ total += *(u32 *)((void *)vcpu + offset);
+ }
+ spin_unlock(&kvm_lock);
+ return total;
+}
+
+static void stat_set(void *offset, u64 val)
+{
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(stat_fops, stat_get, stat_set, "%llu\n");
+
static __init void kvm_init_debug(void)
{
struct kvm_stats_debugfs_item *p;
debugfs_dir = debugfs_create_dir("kvm", NULL);
for (p = debugfs_entries; p->name; ++p)
- p->dentry = debugfs_create_u32(p->name, 0444, debugfs_dir,
- p->data);
+ p->dentry = debugfs_create_file(p->name, 0444, debugfs_dir,
+ (void *)(long)p->offset,
+ &stat_fops);
}
static void kvm_exit_debug(void)
projects / powerpc.git / blobdiff