linux-kernel - Re: [PATCH v11 00/16] Introduce Architectural LBR for vPMU

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Message-ID: <27e36c48-8062-7a02-aca2-80f32f61ae75@redhat.com>
Date:   Tue, 10 May 2022 17:55:40 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Yang Weijiang <weijiang.yang@...el.com>, jmattson@...gle.com,
        seanjc@...gle.com, kan.liang@...ux.intel.com,
        like.xu.linux@...il.com, vkuznets@...hat.com, wei.w.wang@...el.com,
        kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v11 00/16] Introduce Architectural LBR for vPMU

On 5/6/22 05:32, Yang Weijiang wrote:
> [0] https://software.intel.com/sites/default/files/managed/c5/15/architecture-instruction-set-extensions-programming-reference.pdf
> [1] https://lore.kernel.org/lkml/1593780569-62993-1-git-send-email-kan.liang@linux.intel.com/
> 
> Qemu patch:
> https://patchwork.ozlabs.org/project/qemu-devel/cover/20220215195258.29149-1-weijiang.yang@intel.com/
> 
> Previous version:
> v10: https://lore.kernel.org/all/20220422075509.353942-1-weijiang.yang@intel.com/
> 
> Changes in v11:
> 1. Moved MSR_ARCH_LBR_DEPTH/CTL check code to a unified function.[Kan]
> 2. Modified some commit messages per Kan's feedback.
> 3. Rebased the patch series to 5.18-rc5.

Thanks, this is mostly okay; the only remaining issues are Kan's 
feedback and saving/restoring on SMM enter/exit.

The QEMU patches look good too.

Paolo