RE: [PATCH v3 4/6] KVM: arm64: Disable MPAM visibility by default and ignore VMM writes

[Shameerali Kolothum Thodi <shameerali.kolothum.thodi@huawei.com>]

Hi James,

> -----Original Message-----
> From: Shameerali Kolothum Thodi
> Sent: Friday, June 28, 2024 9:11 AM
> To: 'James Morse' <james.morse@arm.com>; linux-arm-
> kernel@lists.infradead.org; kvmarm@lists.linux.dev
> Cc: Marc Zyngier <maz@kernel.org>; Oliver Upton <oliver.upton@linux.dev>;
> Suzuki K Poulose <suzuki.poulose@arm.com>; yuzenghui
> <yuzenghui@huawei.com>; Catalin Marinas <catalin.marinas@arm.com>;
> Will Deacon <will@kernel.org>; Jing Zhang <jingzhangos@google.com>;
> Wangzhou (B) <wangzhou1@hisilicon.com>
> Subject: RE: [PATCH v3 4/6] KVM: arm64: Disable MPAM visibility by default
> and ignore VMM writes
 (vcpu, rd, user_val);
> > +}
> 
> Commit 14e270fa5c4c(arm64/cpufeature: Add remaining feature bits in
> ID_AA64PFR1 register")
> exposes the MPAMFRAC filed in in AA64PFR1_EL1. Don't we need a similar
> handling for that
> as well to handle the FEAT_MPAMv0p1 case?
> 
> Also any chance you plan to respin this series soon? We do have hardware
> that benefits from this
> series.

Just a gentle ping to see if you have plans to respin this series soon or not. 
Please let me know, if I can be of any help. We do have platforms that
differ in their MPAM features and that breaks migration. 

Thanks,
Shameer