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| author |   James Hogan <james.hogan@imgtec.com> | 2014-06-26 13:56:52 +0100 |
|---|---|---|
| committer | James Hogan <james.hogan@imgtec.com> | 2015-03-27 21:25:08 +0000 |
| commit | 1068eaaf2f64ffb44d97fbaa9ff7a4662b76cf9e (patch) | |
| tree | 4b74c86a86bc44a749e9519646fb3bddf3dd6430 /arch/mips/kvm | |
| parent | MIPS: KVM: Handle TRAP exceptions from guest kernel (diff) | |
| download | linux-dev-1068eaaf2f64ffb44d97fbaa9ff7a4662b76cf9e.tar.xz linux-dev-1068eaaf2f64ffb44d97fbaa9ff7a4662b76cf9e.zip | |
MIPS: KVM: Implement PRid CP0 register access
Implement access to the guest Processor Identification CP0 register
using the KVM_GET_ONE_REG and KVM_SET_ONE_REG ioctls. This allows the
owning process to modify and read back the value that is exposed to the
guest in this register.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Diffstat (limited to 'arch/mips/kvm')
| -rw-r--r-- | arch/mips/kvm/mips.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c index 399b5517ecb8..fd620cc8a44c 100644 --- a/arch/mips/kvm/mips.c +++ b/arch/mips/kvm/mips.c @@ -505,6 +505,7 @@ static u64 kvm_mips_get_one_regs[] = { KVM_REG_MIPS_CP0_STATUS, KVM_REG_MIPS_CP0_CAUSE, KVM_REG_MIPS_CP0_EPC, + KVM_REG_MIPS_CP0_PRID, KVM_REG_MIPS_CP0_CONFIG, KVM_REG_MIPS_CP0_CONFIG1, KVM_REG_MIPS_CP0_CONFIG2, @@ -574,6 +575,9 @@ static int kvm_mips_get_reg(struct kvm_vcpu *vcpu, case KVM_REG_MIPS_CP0_EPC: v = (long)kvm_read_c0_guest_epc(cop0); break; + case KVM_REG_MIPS_CP0_PRID: + v = (long)kvm_read_c0_guest_prid(cop0); + break; case KVM_REG_MIPS_CP0_ERROREPC: v = (long)kvm_read_c0_guest_errorepc(cop0); break; @@ -687,6 +691,9 @@ static int kvm_mips_set_reg(struct kvm_vcpu *vcpu, case KVM_REG_MIPS_CP0_EPC: kvm_write_c0_guest_epc(cop0, v); break; + case KVM_REG_MIPS_CP0_PRID: + kvm_write_c0_guest_prid(cop0, v); + break; case KVM_REG_MIPS_CP0_ERROREPC: kvm_write_c0_guest_errorepc(cop0, v); break; |