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KVM: PPC: Book3S HV nestedv2: Keep nested guest HASHKEYR in sync

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

The nestedv2 APIs has the guest state element defined for HASHKEYR for
the save-restore with L0. However, its ignored in the code.

The patch takes care of this for the HASHKEYR GSID.

Signed-off-by: Shivaprasad G Bhat <sbhat@linux.ibm.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/171759284380.1480.15665015792935543933.stgit@linux.ibm.com

(cherry picked from commit 1e97c1eb785fe2dc863c2bd570030d6fcf4b5e5b)
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 13:07:27 +00:00
committed by Stefan Bader
parent 038b4580e0
commit ded46ed0ab
1 changed files with 6 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
arch/powerpc/kvm/book3s_hv_nestedv2.c
+6
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@@ -196,6 +196,9 @@ static int gs_msg_ops_vcpu_fill_info(struct kvmppc_gs_buff *gsb,
case KVMPPC_GSID_DEXCR:
rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.dexcr);
break;
case KVMPPC_GSID_HASHKEYR:
rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.hashkeyr);
break;
case KVMPPC_GSID_CIABR:
rc = kvmppc_gse_put_u64(gsb, iden, vcpu->arch.ciabr);
break;
@@ -447,6 +450,9 @@ static int gs_msg_ops_vcpu_refresh_info(struct kvmppc_gs_msg *gsm,
case KVMPPC_GSID_DEXCR:
vcpu->arch.dexcr = kvmppc_gse_get_u64(gse);
break;
case KVMPPC_GSID_HASHKEYR:
vcpu->arch.hashkeyr = kvmppc_gse_get_u64(gse);
break;
case KVMPPC_GSID_CIABR:
vcpu->arch.ciabr = kvmppc_gse_get_u64(gse);
break;