From: wei.guo.simon@gmail.com
To: linuxppc-dev@lists.ozlabs.org
Cc: Paul Mackerras <paulus@ozlabs.org>,
kvm@vger.kernel.org, kvm-ppc@vger.kernel.org,
Simon Guo <wei.guo.simon@gmail.com>
Subject: [PATCH v2 06/30] KVM: PPC: Book3S PR: turn on FP/VSX/VMX MSR bits in kvmppc_save_tm()
Date: Wed, 28 Feb 2018 01:37:13 +0800 [thread overview]
Message-ID: <1519753057-11059-7-git-send-email-wei.guo.simon@gmail.com> (raw)
In-Reply-To: <1519753057-11059-1-git-send-email-wei.guo.simon@gmail.com>
From: Simon Guo <wei.guo.simon@gmail.com>
kvmppc_save_tm() invokes store_fp_state/store_vr_state(). So it is
mandatory to turn on FP/VSX/VMX MSR bits for its execution, just
like what kvmppc_restore_tm() did.
Previsouly HV KVM has turned the bits on outside of function
kvmppc_save_tm(). Now we include this bit change in kvmppc_save_tm()
so that the logic is more clean. And PR KVM can reuse it later.
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Reviewed-by: Paul Mackerras <paulus@ozlabs.org>
---
arch/powerpc/kvm/tm.S | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/kvm/tm.S b/arch/powerpc/kvm/tm.S
index e779b15..2d6fe5b 100644
--- a/arch/powerpc/kvm/tm.S
+++ b/arch/powerpc/kvm/tm.S
@@ -43,6 +43,8 @@ _GLOBAL(kvmppc_save_tm)
mfmsr r8
li r0, 1
rldimi r8, r0, MSR_TM_LG, 63-MSR_TM_LG
+ ori r8, r8, MSR_FP
+ oris r8, r8, (MSR_VEC | MSR_VSX)@h
mtmsrd r8
rldicl. r4, r4, 64 - MSR_TS_S_LG, 62
--
1.8.3.1
next prev parent reply other threads:[~2018-02-27 17:38 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-27 17:37 [PATCH v2 00/30] KVM: PPC: Book3S PR: Transaction memory support on PR KVM wei.guo.simon
2018-02-27 17:37 ` [PATCH v2 01/30] powerpc: export symbol msr_check_and_set() wei.guo.simon
2018-02-27 17:37 ` [PATCH v2 02/30] powerpc: add TEXASR related macros wei.guo.simon
2018-02-27 17:37 ` [PATCH v2 03/30] powerpc: export tm_enable()/tm_disable/tm_abort() APIs wei.guo.simon
2018-02-27 17:37 ` [PATCH v2 04/30] KVM: PPC: Book3S PR: Move kvmppc_save_tm/kvmppc_restore_tm to separate file wei.guo.simon
2018-02-27 17:37 ` [PATCH v2 05/30] KVM: PPC: Book3S PR: add new parameter (guest MSR) for kvmppc_save_tm()/kvmppc_restore_tm() wei.guo.simon
2018-02-27 17:37 ` wei.guo.simon [this message]
2018-02-27 17:37 ` [PATCH v2 07/30] KVM: PPC: Book3S PR: add C function wrapper for _kvmppc_save/restore_tm() wei.guo.simon
2018-05-15 6:05 ` Paul Mackerras
2018-05-15 12:41 ` Simon Guo
2018-02-27 17:37 ` [PATCH v2 08/30] KVM: PPC: Book3S PR: In PR KVM suspends Transactional state when inject an interrupt wei.guo.simon
2018-02-27 17:37 ` [PATCH v2 09/30] KVM: PPC: Book3S PR: PR KVM pass through MSR TM/TS bits to shadow_msr wei.guo.simon
2018-02-27 17:37 ` [PATCH v2 10/30] KVM: PPC: Book3S PR: Sync TM bits to shadow msr for problem state guest wei.guo.simon
2018-05-15 6:01 ` [PATCH v2 00/30] KVM: PPC: Book3S PR: Transaction memory support on PR KVM Paul Mackerras
2018-05-15 11:44 ` Simon Guo
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