Re: [PATCH V2 0/7] arm64/boot: Enable EL2 requirements for FEAT_PMUv3p9

[Catalin Marinas <catalin.marinas@arm.com>]

On Sat, Mar 01, 2025 at 07:58:50AM +0000, Will Deacon wrote:
> On Mon, Feb 03, 2025 at 10:38:21AM +0530, Anshuman Khandual wrote:
> > This series adds fine grained trap control in EL2 required for FEAT_PMUv3p9
> > registers like PMICNTR_EL0, PMICFILTR_EL0, and PMUACR_EL1 which are already
> > being used in the kernel. This is required to prevent their EL1 access trap
> > into EL2.
> > 
> > PMZR_EL0 register trap control i.e HDFGWTR2_EL2.nPMZR_EL0 remains unchanged
> > for now as it does not get accessed in the kernel, and there is no plan for
> > its access from user space.
> > 
> > I have taken the liberty to pick up all the review tags for patches related
> > to tools sysreg update from the KVM FGT2 V2 patch series posted earlier.
> > 
> > https://lore.kernel.org/all/20241210055311.780688-1-anshuman.khandual@arm.com/
> > 
> > Rob had earler mentioned about FEAT_FGT2 based trap control requirement for
> > FEAT_PMUv3p9 registers that are currently being used in kernel. The context
> > can be found here.
> > 
> > https://lore.kernel.org/all/20241216234251.GA629562-robh@kernel.org/
> > 
> > This series is based on v6.14-rc1
> > 
> > Changes in V2:
> > 
> > - Rebased on v6.14-rc1
> > - Updated tools sysreg patches with latest DDI0601 2024-12 definitions
> > - Updated document version as DDI0601 2024-12 in all commit messages
> > - Added latest tags from Rob Herring for the last patch
> 
> I know these have been applied already but, fwiw, patches 1-6 look correct
> when compared against the .xml:
> 
> Acked-by: Will Deacon <will@kernel.org>

Thanks Will.

> I presume Catalin will drop/replace the last patch.

I dropped it already, I'll queue the new one.

-- 
Catalin