maddy [ma...@linux.ibm.com] wrote:
>
> > __init_PMU:
> > +#ifdef CONFIG_PPC_SVM
> > + /*
> > +* SVM's are restricted from accessing PMU, so skip.
> > +*/
> > + mfmsr r5
> > + rldicl r5, r5, 64-MSR_S_LG, 62
> > + cmpwi r5,1
> > + beq skip1
>
> I know all MMCR* are
patch that explicitly includes in
in some files to fix build errors reported by .
---
From: Sukadev Bhattiprolu
Date: Thu, 16 May 2019 20:57:12 -0500
Subject: [PATCH 2/2] powerpc/pseries/svm: Disable BHRB/EBB/PMU access
Ultravisor disables some CPU features like BHRB, EBB and PMU in
secure
ome files to fix build errors reported by .
---
From: Sukadev Bhattiprolu
Date: Thu, 16 May 2019 20:57:12 -0500
Subject: [PATCH 2/2] powerpc/pseries/svm: Disable BHRB/EBB/PMU access
Ultravisor disables some CPU features like BHRB, EBB and PMU in
secure virtual machines (SVMs). Skip access
Hi Sukadev,
I love your patch! Yet something to improve:
[auto build test ERROR on powerpc/next]
[also build test ERROR on v5.5-rc3 next-20191220]
[cannot apply to kvm-ppc/kvm-ppc-next]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we
Ultravisor disables some CPU features like BHRB, EBB and PMU in
secure virtual machines (SVMs). Skip accessing those registers
in SVMs to avoid getting a Program Interrupt.
Signed-off-by: Sukadev Bhattiprolu
---
Changelog[v2]
- [Michael Ellerman] Optimize the code using FW_FEATURE_SVM
