From: Disha Goel <disgoel@linux.vnet.ibm.com>
To: mpe@ellerman.id.au
Cc: atrajeev@linux.vnet.ibm.com, kjain@linux.ibm.com,
npiggin@gmail.com, maddy@linux.ibm.com,
disgoel@linux.vnet.ibm.com, linuxppc-dev@lists.ozlabs.org
Subject: [PATCH v2 2/2] powerpc/kvm: Remove unused references for MMCR3/SIER2/SIER3 registers
Date: Fri, 16 Sep 2022 16:27:36 +0530 [thread overview]
Message-ID: <20220916105736.268153-3-disgoel@linux.vnet.ibm.com> (raw)
In-Reply-To: <20220916105736.268153-1-disgoel@linux.vnet.ibm.com>
From: Kajol Jain" <kjain@linux.ibm.com>
Commit 57dc0eed73ca ("KVM: PPC: Book3S HV P9: Implement PMU save/restore
in C") removed the PMU save/restore functions from assembly code and
implemented these functions in C, for power9 and later platforms.
After the code refactoring, Performance Monitoring Unit (PMU) registers
became part of "p9_host_os_sprs" structure and now this structure is
used to save/restore pmu host registers, for power9 and later platfroms.
But we still have old unused registers references. Patch removes unused
host_mmcr references for Monitor Mode Control Register 3 (MMCR3)/
Sampled Instruction Event Register 2 (SIER2)/ SIER3 registers from
"struct kvmppc_host_state".
Fixes: 57dc0eed73ca ("KVM: PPC: Book3S HV P9: Implement PMU save/restore in C")
Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
---
arch/powerpc/include/asm/kvm_book3s_asm.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/include/asm/kvm_book3s_asm.h b/arch/powerpc/include/asm/kvm_book3s_asm.h
index c8882d9b86c2..a36797938620 100644
--- a/arch/powerpc/include/asm/kvm_book3s_asm.h
+++ b/arch/powerpc/include/asm/kvm_book3s_asm.h
@@ -105,7 +105,7 @@ struct kvmppc_host_state {
void __iomem *xive_tima_virt;
u32 saved_xirr;
u64 dabr;
- u64 host_mmcr[10]; /* MMCR 0,1,A, SIAR, SDAR, MMCR2, SIER, MMCR3, SIER2/3 */
+ u64 host_mmcr[7]; /* MMCR 0,1,A, SIAR, SDAR, MMCR2, SIER */
u32 host_pmc[8];
u64 host_purr;
u64 host_spurr;
--
2.31.1
next prev parent reply other threads:[~2022-09-16 10:59 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-16 10:57 [PATCH v2 0/2] Remove unused macros from asm-offset Disha Goel
2022-09-16 10:57 ` [PATCH v2 1/2] powerpc/kvm: " Disha Goel
2022-09-20 8:11 ` Nicholas Piggin
2022-09-16 10:57 ` Disha Goel [this message]
2022-09-20 8:15 ` [PATCH v2 2/2] powerpc/kvm: Remove unused references for MMCR3/SIER2/SIER3 registers Nicholas Piggin
2022-10-17 5:56 ` [PATCH v2 0/2] Remove unused macros from asm-offset Athira Rajeev
2022-11-30 9:23 ` Michael Ellerman
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