diff options
| author | Alexey Kardashevskiy <aik@ozlabs.ru> | 2017-03-17 19:31:38 +1100 |
|---|---|---|
| committer | Paul Mackerras <paulus@ozlabs.org> | 2017-04-20 11:37:33 +1000 |
| commit | 91242fd1a3eb96e4efe43bdf96c2fcec97fdf4ff (patch) | |
| tree | 33ee98d9cce154ae4601e2216e257ed5e786cf15 /arch/powerpc | |
| parent | 6f63e81bda98cbb549b01faf978884692ded438d (diff) | |
KVM: PPC: Add MMIO emulation for stdx (store doubleword indexed)
This adds missing stdx emulation for emulated MMIO accesses by KVM
guests. This allows the Mellanox mlx5_core driver from recent kernels
to work when MMIO emulation is enforced by userspace.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/include/asm/ppc-opcode.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/kvm/emulate_loadstore.c | 6 |
2 files changed, 7 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h index 1e37c3c0733a..94e7df22630e 100644 --- a/arch/powerpc/include/asm/ppc-opcode.h +++ b/arch/powerpc/include/asm/ppc-opcode.h @@ -94,6 +94,7 @@ #define OP_31_XOP_TRAP_64 68 #define OP_31_XOP_DCBF 86 #define OP_31_XOP_LBZX 87 +#define OP_31_XOP_STDX 149 #define OP_31_XOP_STWX 151 #define OP_31_XOP_STBX 215 #define OP_31_XOP_LBZUX 119 diff --git a/arch/powerpc/kvm/emulate_loadstore.c b/arch/powerpc/kvm/emulate_loadstore.c index 9cda1b9dbc51..a0f27a30379d 100644 --- a/arch/powerpc/kvm/emulate_loadstore.c +++ b/arch/powerpc/kvm/emulate_loadstore.c @@ -119,6 +119,12 @@ int kvmppc_emulate_loadstore(struct kvm_vcpu *vcpu) kvmppc_set_gpr(vcpu, ra, vcpu->arch.vaddr_accessed); break; + case OP_31_XOP_STDX: + emulated = kvmppc_handle_store(run, vcpu, + kvmppc_get_gpr(vcpu, rs), + 8, 1); + break; + case OP_31_XOP_STWX: emulated = kvmppc_handle_store(run, vcpu, kvmppc_get_gpr(vcpu, rs), |