diff options
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/include/asm/kvm_host.h | 1 | ||||
| -rw-r--r-- | arch/mips/kvm/locore.S | 2 | ||||
| -rw-r--r-- | arch/mips/kvm/mips.c | 23 |
3 files changed, 20 insertions, 6 deletions
diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h index f2c249796ea8..ac4fc716062b 100644 --- a/arch/mips/include/asm/kvm_host.h +++ b/arch/mips/include/asm/kvm_host.h @@ -120,6 +120,7 @@ struct kvm_vcpu_stat { u32 resvd_inst_exits; u32 break_inst_exits; u32 flush_dcache_exits; + u32 halt_successful_poll; u32 halt_wakeup; }; diff --git a/arch/mips/kvm/locore.S b/arch/mips/kvm/locore.S index d7279c03c517..4a68b176d6e4 100644 --- a/arch/mips/kvm/locore.S +++ b/arch/mips/kvm/locore.S @@ -434,7 +434,7 @@ __kvm_mips_return_to_guest: /* Setup status register for running guest in UM */ .set at or v1, v1, (ST0_EXL | KSU_USER | ST0_IE) - and v1, v1, ~ST0_CU0 + and v1, v1, ~(ST0_CU0 | ST0_MX) .set noat mtc0 v1, CP0_STATUS ehb diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c index e3b21e51ff7e..c9eccf5df912 100644 --- a/arch/mips/kvm/mips.c +++ b/arch/mips/kvm/mips.c @@ -15,9 +15,11 @@ #include <linux/vmalloc.h> #include <linux/fs.h> #include <linux/bootmem.h> +#include <asm/fpu.h> #include <asm/page.h> #include <asm/cacheflush.h> #include <asm/mmu_context.h> +#include <asm/pgtable.h> #include <linux/kvm_host.h> @@ -47,6 +49,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { { "resvd_inst", VCPU_STAT(resvd_inst_exits), KVM_STAT_VCPU }, { "break_inst", VCPU_STAT(break_inst_exits), KVM_STAT_VCPU }, { "flush_dcache", VCPU_STAT(flush_dcache_exits), KVM_STAT_VCPU }, + { "halt_successful_poll", VCPU_STAT(halt_successful_poll), KVM_STAT_VCPU }, { "halt_wakeup", VCPU_STAT(halt_wakeup), KVM_STAT_VCPU }, {NULL} }; @@ -378,6 +381,8 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) vcpu->mmio_needed = 0; } + lose_fpu(1); + local_irq_disable(); /* Check if we have any exceptions/interrupts pending */ kvm_mips_deliver_interrupts(vcpu, @@ -385,8 +390,14 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) kvm_guest_enter(); + /* Disable hardware page table walking while in guest */ + htw_stop(); + r = __kvm_mips_vcpu_run(run, vcpu); + /* Re-enable HTW before enabling interrupts */ + htw_start(); + kvm_guest_exit(); local_irq_enable(); @@ -832,9 +843,8 @@ int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, return -ENOIOCTLCMD; } -int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu) +void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu) { - return 0; } int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) @@ -980,9 +990,6 @@ static void kvm_mips_set_c0_status(void) { uint32_t status = read_c0_status(); - if (cpu_has_fpu) - status |= (ST0_CU1); - if (cpu_has_dsp) status |= (ST0_MX); @@ -1002,6 +1009,9 @@ int kvm_mips_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu) enum emulation_result er = EMULATE_DONE; int ret = RESUME_GUEST; + /* re-enable HTW before enabling interrupts */ + htw_start(); + /* Set a default exit reason */ run->exit_reason = KVM_EXIT_UNKNOWN; run->ready_for_interrupt_injection = 1; @@ -1136,6 +1146,9 @@ skip_emul: } } + /* Disable HTW before returning to guest or host */ + htw_stop(); + return ret; } |