linux-kernel - Re: [PATCH kernel v2 0/3] KVM: SEV: Enable AMD SEV-ES DebugSwap

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Date:   Mon, 9 Jan 2023 16:20:17 +1100
From:   Alexey Kardashevskiy <aik@....com>
To:     kvm@...r.kernel.org
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org,
        Venu Busireddy <venu.busireddy@...cle.com>,
        Tony Luck <tony.luck@...el.com>,
        Tom Lendacky <thomas.lendacky@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Sean Christopherson <seanjc@...gle.com>,
        Sandipan Das <sandipan.das@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Michael Roth <michael.roth@....com>,
        Mario Limonciello <mario.limonciello@....com>,
        Jan Kara <jack@...e.cz>, Ingo Molnar <mingo@...hat.com>,
        Huang Rui <ray.huang@....com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Daniel Sneddon <daniel.sneddon@...ux.intel.com>,
        Brijesh Singh <brijesh.singh@....com>,
        Borislav Petkov <bp@...en8.de>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Andrew Cooper <andrew.cooper3@...rix.com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        "Jason A. Donenfeld" <Jason@...c4.com>,
        "H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH kernel v2 0/3] KVM: SEV: Enable AMD SEV-ES DebugSwap



On 9/12/22 15:38, Alexey Kardashevskiy wrote:
> This is to use another AMD SEV-ES hardware assisted register swap,
> more detail in 2/3. The patches are fairly independend but required in
> this order.
> 
> This is based on sha1 0d1409e4ff08 and requires something like this
> for X86_FEATURE_NO_NESTED_DATA_BP:
> https://lkml.org/lkml/2022/11/29/1229
> 
> This patchset is pushed out at
> https://github.com/aik/linux/commits/debugswap
> 
> 
> Please comment. Thanks.

Ping? Thanks,


> 
> btw the enormous cc: list came from get_maintainer.pl, keep it like
> this or tell the script something to reduce the list?
> 
> 
> Alexey Kardashevskiy (3):
>    x86/amd: Cache values in percpu variables
>    KVM: SEV: Enable data breakpoints in SEV-ES
>    x86/sev: Do not handle #VC for DR7 read/write
> 
>   arch/x86/include/asm/debugreg.h        |  9 +++-
>   arch/x86/include/asm/msr-index.h       |  1 +
>   arch/x86/include/asm/svm.h             |  1 +
>   arch/x86/kvm/svm/svm.h                 | 16 +++++--
>   tools/arch/x86/include/asm/msr-index.h |  1 +
>   arch/x86/kernel/cpu/amd.c              | 45 ++++++++++++++------
>   arch/x86/kernel/sev.c                  |  6 +++
>   arch/x86/kvm/svm/sev.c                 | 29 +++++++++++++
>   arch/x86/kvm/svm/svm.c                 |  3 +-
>   9 files changed, 90 insertions(+), 21 deletions(-)
> 

-- 
Alexey