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| author | Tudor Laurentiu <b10716@freescale.com> | 2015-09-25 18:02:23 +0300 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2015-10-15 15:58:16 +1100 |
| commit | 2daab50e17997424af57d1ab14042a51e9a368ab (patch) | |
| tree | ea73f9fc71fda941d4ac6f1861abd00859967157 | |
| parent | d4cd4f9586f87a5fc828b4c4698aa4faf56c96fc (diff) | |
| download | linux-2daab50e17997424af57d1ab14042a51e9a368ab.tar.bz2 | |
KVM: PPC: e500: Emulate TMCFG0 TMRN register
Emulate TMCFG0 TMRN register exposing one HW thread per vcpu.
Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com>
[Laurentiu.Tudor@freescale.com: rebased on latest kernel, use
define instead of hardcoded value, moved code in own function]
Signed-off-by: Laurentiu Tudor <Laurentiu.Tudor@freescale.com>
Acked-by: Scott Wood <scotttwood@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
| -rw-r--r-- | arch/powerpc/include/asm/disassemble.h | 5 | ||||
| -rw-r--r-- | arch/powerpc/kvm/e500_emulate.c | 19 |
2 files changed, 24 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/disassemble.h b/arch/powerpc/include/asm/disassemble.h index 6330a61b875a..4852e849128b 100644 --- a/arch/powerpc/include/asm/disassemble.h +++ b/arch/powerpc/include/asm/disassemble.h @@ -42,6 +42,11 @@ static inline unsigned int get_dcrn(u32 inst) return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0); } +static inline unsigned int get_tmrn(u32 inst) +{ + return ((inst >> 16) & 0x1f) | ((inst >> 6) & 0x3e0); +} + static inline unsigned int get_rt(u32 inst) { return (inst >> 21) & 0x1f; diff --git a/arch/powerpc/kvm/e500_emulate.c b/arch/powerpc/kvm/e500_emulate.c index ce7291c79f6c..990db69a1d0b 100644 --- a/arch/powerpc/kvm/e500_emulate.c +++ b/arch/powerpc/kvm/e500_emulate.c @@ -15,6 +15,7 @@ #include <asm/kvm_ppc.h> #include <asm/disassemble.h> #include <asm/dbell.h> +#include <asm/reg_booke.h> #include "booke.h" #include "e500.h" @@ -22,6 +23,7 @@ #define XOP_DCBTLS 166 #define XOP_MSGSND 206 #define XOP_MSGCLR 238 +#define XOP_MFTMR 366 #define XOP_TLBIVAX 786 #define XOP_TLBSX 914 #define XOP_TLBRE 946 @@ -113,6 +115,19 @@ static int kvmppc_e500_emul_dcbtls(struct kvm_vcpu *vcpu) return EMULATE_DONE; } +static int kvmppc_e500_emul_mftmr(struct kvm_vcpu *vcpu, unsigned int inst, + int rt) +{ + /* Expose one thread per vcpu */ + if (get_tmrn(inst) == TMRN_TMCFG0) { + kvmppc_set_gpr(vcpu, rt, + 1 | (1 << TMRN_TMCFG0_NATHRD_SHIFT)); + return EMULATE_DONE; + } + + return EMULATE_FAIL; +} + int kvmppc_core_emulate_op_e500(struct kvm_run *run, struct kvm_vcpu *vcpu, unsigned int inst, int *advance) { @@ -165,6 +180,10 @@ int kvmppc_core_emulate_op_e500(struct kvm_run *run, struct kvm_vcpu *vcpu, emulated = kvmppc_e500_emul_tlbivax(vcpu, ea); break; + case XOP_MFTMR: + emulated = kvmppc_e500_emul_mftmr(vcpu, inst, rt); + break; + case XOP_EHPRIV: emulated = kvmppc_e500_emul_ehpriv(run, vcpu, inst, advance); |