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KVM: PPC: Book3S PR: Turn on FP/VSX/VMX MSR bits in kvmppc_save_tm() 

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.

Previously 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 cleaner. And PR KVM can reuse it later.

Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Reviewed-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
This commit is contained in:
Simon Guo 2018-05-23 15:01:49 +08:00 committed by Paul Mackerras
parent 6f597c6b63
commit 7f386af7bd
1 changed files with 2 additions and 0 deletions
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2
arch/powerpc/kvm/tm.S
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@ -41,6 +41,8 @@ _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