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KVM: PPC: Book3S HV: Add one-reg interface for HASHPKEYR register

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BugLink: https://bugs.launchpad.net/bugs/2076406

The patch adds a one-reg register identifier which can be used to
read and set the virtual HASHPKEYR for the guest during enter/exit
with KVM_REG_PPC_HASHPKEYR. The specific SPR KVM API documentation
too updated.

Signed-off-by: Shivaprasad G Bhat <sbhat@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/171759285547.1480.12374595786792346073.stgit@linux.ibm.com

(cherry picked from commit 9a0d2f4995ddde3022c54e43f9ece4f71f76f6e8)
Signed-off-by: Frank Heimes <frank.heimes@canonical.com>
Acked-by: Thibault Ferrante <thibault.ferrante@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Shivaprasad G Bhat
2024-06-05 13:07:39 +00:00
committed by Stefan Bader
parent ded46ed0ab
commit c19e006ab4
5 changed files with 10 additions and 0 deletions
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arch/powerpc/include/uapi/asm/kvm.h
+1
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@@ -648,6 +648,7 @@ struct kvm_ppc_cpu_char {
#define KVM_REG_PPC_DAWRX1 (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xc5)
#define KVM_REG_PPC_DEXCR (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xc6)
#define KVM_REG_PPC_HASHKEYR (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xc7)
#define KVM_REG_PPC_HASHPKEYR (KVM_REG_PPC | KVM_REG_SIZE_U64 | 0xc8)
/* Transactional Memory checkpointed state:
* This is all GPRs, all VSX regs and a subset of SPRs