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

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Message-ID: <20221201021948.9259-1-aik@amd.com>
Date:   Thu, 1 Dec 2022 13:19:45 +1100
From:   Alexey Kardashevskiy <aik@....com>
To:     Alexey Kardashevskiy <aik@....com>
CC:     <kvm@...r.kernel.org>, <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>,
        Peter Zijlstra <peterz@...radead.org>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Michael Sterritt <sterritt@...gle.com>,
        Michael Roth <michael.roth@....com>,
        Mario Limonciello <mario.limonciello@....com>,
        Ingo Molnar <mingo@...hat.com>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Dave Hansen" <dave.hansen@...ux.intel.com>,
        Borislav Petkov <bp@...en8.de>,
        "Andrew Cooper" <andrew.cooper3@...rix.com>,
        "Jason A. Donenfeld" <Jason@...c4.com>,
        "H. Peter Anvin" <hpa@...or.com>
Subject: [PATCH kernel 0/3] KVM: SEV: Enable AMD SEV-ES DebugSwap

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 ef4d3ea40565 and requires something like this:
https://lkml.org/lkml/2022/11/29/1229

This patchset is pushed out at
https://github.com/aik/linux/commits/debugswap

Please comment. Thanks.



Alexey Kardashevskiy (3):
  x86/amd/dr_addr_mask: Cache values in percpu variables
  KVM: SEV: Enable DebugSwap
  x86/sev: Do not handle #VC for DR7 read/write

 arch/x86/include/asm/debugreg.h |  1 +
 arch/x86/include/asm/svm.h      |  1 +
 arch/x86/kvm/svm/svm.h          | 18 ++++++++---
 arch/x86/kernel/cpu/amd.c       | 32 ++++++++++++++++++++
 arch/x86/kernel/sev.c           |  6 ++++
 arch/x86/kvm/svm/sev.c          | 22 +++++++++++++-
 arch/x86/kvm/svm/svm.c          |  6 ++--
 7 files changed, 78 insertions(+), 8 deletions(-)

-- 
2.38.1