diff options
| author | James Hogan <james.hogan@imgtec.com> | 2014-05-29 10:16:30 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2014-05-30 13:00:57 +0200 |
| commit | 7767b7d2f7c4d81f8c6710af1f5cb3fc038fa7be (patch) | |
| tree | a416a1967b551bc8a5361b518854c73401b96d71 /arch/mips | |
| parent | f8be02dacaca49ac442d03a178d4290a083c3922 (diff) | |
MIPS: KVM: Add CP0_UserLocal KVM register access
Implement KVM_{GET,SET}_ONE_REG ioctl based access to the guest CP0
UserLocal register. This is so that userland can save and restore its
value.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: kvm@vger.kernel.org
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: David Daney <david.daney@cavium.com>
Cc: Sanjay Lal <sanjayl@kymasys.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/include/asm/kvm_host.h | 1 | ||||
| -rw-r--r-- | arch/mips/kvm/kvm_mips.c | 7 |
2 files changed, 8 insertions, 0 deletions
diff --git a/arch/mips/include/asm/kvm_host.h b/arch/mips/include/asm/kvm_host.h index 41e180ed36e3..6f9338450e24 100644 --- a/arch/mips/include/asm/kvm_host.h +++ b/arch/mips/include/asm/kvm_host.h @@ -442,6 +442,7 @@ struct kvm_vcpu_arch { #define kvm_read_c0_guest_context(cop0) (cop0->reg[MIPS_CP0_TLB_CONTEXT][0]) #define kvm_write_c0_guest_context(cop0, val) (cop0->reg[MIPS_CP0_TLB_CONTEXT][0] = (val)) #define kvm_read_c0_guest_userlocal(cop0) (cop0->reg[MIPS_CP0_TLB_CONTEXT][2]) +#define kvm_write_c0_guest_userlocal(cop0, val) (cop0->reg[MIPS_CP0_TLB_CONTEXT][2] = (val)) #define kvm_read_c0_guest_pagemask(cop0) (cop0->reg[MIPS_CP0_TLB_PG_MASK][0]) #define kvm_write_c0_guest_pagemask(cop0, val) (cop0->reg[MIPS_CP0_TLB_PG_MASK][0] = (val)) #define kvm_read_c0_guest_wired(cop0) (cop0->reg[MIPS_CP0_TLB_WIRED][0]) diff --git a/arch/mips/kvm/kvm_mips.c b/arch/mips/kvm/kvm_mips.c index 61d834cc35cf..26f10fb8dcba 100644 --- a/arch/mips/kvm/kvm_mips.c +++ b/arch/mips/kvm/kvm_mips.c @@ -526,6 +526,7 @@ static u64 kvm_mips_get_one_regs[] = { KVM_REG_MIPS_CP0_INDEX, KVM_REG_MIPS_CP0_CONTEXT, + KVM_REG_MIPS_CP0_USERLOCAL, KVM_REG_MIPS_CP0_PAGEMASK, KVM_REG_MIPS_CP0_WIRED, KVM_REG_MIPS_CP0_BADVADDR, @@ -570,6 +571,9 @@ static int kvm_mips_get_reg(struct kvm_vcpu *vcpu, case KVM_REG_MIPS_CP0_CONTEXT: v = (long)kvm_read_c0_guest_context(cop0); break; + case KVM_REG_MIPS_CP0_USERLOCAL: + v = (long)kvm_read_c0_guest_userlocal(cop0); + break; case KVM_REG_MIPS_CP0_PAGEMASK: v = (long)kvm_read_c0_guest_pagemask(cop0); break; @@ -678,6 +682,9 @@ static int kvm_mips_set_reg(struct kvm_vcpu *vcpu, case KVM_REG_MIPS_CP0_CONTEXT: kvm_write_c0_guest_context(cop0, v); break; + case KVM_REG_MIPS_CP0_USERLOCAL: + kvm_write_c0_guest_userlocal(cop0, v); + break; case KVM_REG_MIPS_CP0_PAGEMASK: kvm_write_c0_guest_pagemask(cop0, v); break; |