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| author | Paul Mackerras <paulus@ozlabs.org> | 2016-11-18 05:11:42 +0300 |
|---|---|---|
| committer | Paul Mackerras <paulus@ozlabs.org> | 2016-11-24 01:24:23 +0300 |
| commit | e9cf1e085647b433ccd98582681b17121ecfdc21 (patch) | |
| tree | 6147ebf857ac4c8ff7439c0f2d038745ea6763be /arch/powerpc/include | |
| parent | 83677f551e0a6ad43061053e7d6208abcd2707f0 (diff) | |
| download | linux-e9cf1e085647b433ccd98582681b17121ecfdc21.tar.xz | |
KVM: PPC: Book3S HV: Add new POWER9 guest-accessible SPRs
This adds code to handle two new guest-accessible special-purpose
registers on POWER9: TIDR (thread ID register) and PSSCR (processor
stop status and control register). They are context-switched
between host and guest, and the guest values can be read and set
via the one_reg interface.
The PSSCR contains some fields which are guest-accessible and some
which are only accessible in hypervisor mode. We only allow the
guest-accessible fields to be read or set by userspace.
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/kvm_host.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/include/uapi/asm/kvm.h | 4 |
2 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h index 0e584ee57730..9556de61b1bb 100644 --- a/arch/powerpc/include/asm/kvm_host.h +++ b/arch/powerpc/include/asm/kvm_host.h @@ -517,6 +517,8 @@ struct kvm_vcpu_arch { ulong tcscr; ulong acop; ulong wort; + ulong tid; + ulong psscr; ulong shadow_srr1; #endif u32 vrsave; /* also USPRG0 */ diff --git a/arch/powerpc/include/uapi/asm/kvm.h b/arch/powerpc/include/uapi/asm/kvm.h index 0fb1326c3ea2..3603b6f51b11 100644 --- a/arch/powerpc/include/uapi/asm/kvm.h +++ b/arch/powerpc/include/uapi/asm/kvm.h @@ -573,6 +573,10 @@ struct kvm_get_htab_header { #define KVM_REG_PPC_SPRG9 (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xba) #define KVM_REG_PPC_DBSR (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0xbb) +/* POWER9 registers */ +#define KVM_REG_PPC_TIDR (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xbc) +#define KVM_REG_PPC_PSSCR (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xbd) + /* Transactional Memory checkpointed state: * This is all GPRs, all VSX regs and a subset of SPRs */ |