diff options
Diffstat (limited to 'arch/arm/kvm/coproc.c')
| -rw-r--r-- | arch/arm/kvm/coproc.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/arch/arm/kvm/coproc.c b/arch/arm/kvm/coproc.c index 3e5e4194ef86..2c14b69511e9 100644 --- a/arch/arm/kvm/coproc.c +++ b/arch/arm/kvm/coproc.c @@ -40,6 +40,24 @@ * Co-processor emulation *****************************************************************************/ +static bool write_to_read_only(struct kvm_vcpu *vcpu, + const struct coproc_params *params) +{ + WARN_ONCE(1, "CP15 write to read-only register\n"); + print_cp_instr(params); + kvm_inject_undefined(vcpu); + return false; +} + +static bool read_from_write_only(struct kvm_vcpu *vcpu, + const struct coproc_params *params) +{ + WARN_ONCE(1, "CP15 read to write-only register\n"); + print_cp_instr(params); + kvm_inject_undefined(vcpu); + return false; +} + /* 3 bits per cache level, as per CLIDR, but non-existent caches always 0 */ static u32 cache_levels; @@ -502,15 +520,15 @@ static int emulate_cp15(struct kvm_vcpu *vcpu, if (likely(r->access(vcpu, params, r))) { /* Skip instruction, since it was emulated */ kvm_skip_instr(vcpu, kvm_vcpu_trap_il_is32bit(vcpu)); - return 1; } - /* If access function fails, it should complain. */ } else { + /* If access function fails, it should complain. */ kvm_err("Unsupported guest CP15 access at: %08lx\n", *vcpu_pc(vcpu)); print_cp_instr(params); + kvm_inject_undefined(vcpu); } - kvm_inject_undefined(vcpu); + return 1; } |