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| author | Nicholas Piggin <npiggin@gmail.com> | 2021-05-28 19:07:37 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-06-10 22:12:13 +1000 |
| commit | a32ed1bb70723ec7a6c888b6c7071d516cca0e8f (patch) | |
| tree | aa785ed67e020192791002ea69bc288a750e794e /arch/powerpc/kvm | |
| parent | 6d770e3fe9a120560cda66331ce5faa363400e97 (diff) | |
| download | linux-a32ed1bb70723ec7a6c888b6c7071d516cca0e8f.tar.gz linux-a32ed1bb70723ec7a6c888b6c7071d516cca0e8f.tar.bz2 linux-a32ed1bb70723ec7a6c888b6c7071d516cca0e8f.zip | |
KVM: PPC: Book3S HV P9: Improve exit timing accounting coverage
The C conversion caused exit timing to become a bit cramped. Expand it
to cover more of the entry and exit code.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210528090752.3542186-18-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/kvm')
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv_p9_entry.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/powerpc/kvm/book3s_hv_p9_entry.c b/arch/powerpc/kvm/book3s_hv_p9_entry.c index a6f89e30040b..8a56141214c1 100644 --- a/arch/powerpc/kvm/book3s_hv_p9_entry.c +++ b/arch/powerpc/kvm/book3s_hv_p9_entry.c @@ -143,6 +143,8 @@ int kvmhv_vcpu_entry_p9(struct kvm_vcpu *vcpu, u64 time_limit, unsigned long lpc if (hdec < 0) return BOOK3S_INTERRUPT_HV_DECREMENTER; + start_timing(vcpu, &vcpu->arch.rm_entry); + if (vc->tb_offset) { u64 new_tb = mftb() + vc->tb_offset; mtspr(SPRN_TBU40, new_tb); @@ -193,8 +195,6 @@ int kvmhv_vcpu_entry_p9(struct kvm_vcpu *vcpu, u64 time_limit, unsigned long lpc */ mtspr(SPRN_HDEC, hdec); - start_timing(vcpu, &vcpu->arch.rm_entry); - vcpu->arch.ceded = 0; WARN_ON_ONCE(vcpu->arch.shregs.msr & MSR_HV); @@ -337,8 +337,6 @@ int kvmhv_vcpu_entry_p9(struct kvm_vcpu *vcpu, u64 time_limit, unsigned long lpc accumulate_time(vcpu, &vcpu->arch.rm_exit); - end_timing(vcpu); - /* Advance host PURR/SPURR by the amount used by guest */ purr = mfspr(SPRN_PURR); spurr = mfspr(SPRN_SPURR); @@ -402,6 +400,8 @@ int kvmhv_vcpu_entry_p9(struct kvm_vcpu *vcpu, u64 time_limit, unsigned long lpc switch_mmu_to_host_radix(kvm, host_pidr); + end_timing(vcpu); + return trap; } EXPORT_SYMBOL_GPL(kvmhv_vcpu_entry_p9); |