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AJvYcCVJokc/UZsHbD9gVHUVmqEJkkdUVrxX/5yfWcJ6qZ38MOEtx8uivHdhQQ6cS+5t4uToI3ntTyGDCQZMGU0=@vger.kernel.org X-Gm-Message-State: AOJu0YyjsCp6PE+neAQpYCvf4nFGfyok+QpWzZoEzXqhIWUY05NFzWpR QIdL+gF8rTf1cmE4aDVEsisr0aVdeB8oyO8Iw9nlWIJpGAFHPvi5+/xdNFUBVXkNana07YIXVml o1Q== X-Google-Smtp-Source: AGHT+IF8HLLTOuTCNq7vh6SdOkqFvsj1dyHQ1QM611ov8SmP4NWwxRqDVQZ0yGsjshQGf+9BUmJlS42aWrY= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:9d:3983:ac13:c240]) (user=seanjc job=sendgmr) by 2002:a05:690c:11:b0:6ea:6872:2fe6 with SMTP id 00721157ae682-6ea68723031mr479037b3.4.1730489324538; Fri, 01 Nov 2024 12:28:44 -0700 (PDT) Date: Fri, 1 Nov 2024 12:28:43 -0700 In-Reply-To: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20241011214353.1625057-1-jmattson@google.com> <173039500211.1507616.16831780895322741303.b4-ty@google.com> <20241101153857.GAZyT2EdLXKs7ZmDFx@fat_crate.local> Message-ID: Subject: Re: [PATCH v5 0/4] Distinguish between variants of IBPB From: Sean Christopherson To: Borislav Petkov Cc: kvm@vger.kernel.org, Jim Mattson , dave.hansen@linux.intel.com, hpa@zytor.com, jpoimboe@kernel.org, kai.huang@intel.com, linux-kernel@vger.kernel.org, mingo@redhat.com, pawan.kumar.gupta@linux.intel.com, pbonzini@redhat.com, sandipan.das@amd.com, tglx@linutronix.de, x86@kernel.org Content-Type: text/plain; charset="us-ascii" On Fri, Nov 01, 2024, Sean Christopherson wrote: > On Fri, Nov 01, 2024, Borislav Petkov wrote: > > On Thu, Oct 31, 2024 at 12:51:33PM -0700, Sean Christopherson wrote: > > > [1/4] x86/cpufeatures: Clarify semantics of X86_FEATURE_IBPB > > > https://github.com/kvm-x86/linux/commit/43801a0dbb38 > > > [2/4] x86/cpufeatures: Define X86_FEATURE_AMD_IBPB_RET > > > https://github.com/kvm-x86/linux/commit/99d252e3ae3e > > > > ff898623af2e ("x86/cpufeatures: Define X86_FEATURE_AMD_IBPB_RET") > > Doh. I think I'll rebase the entire misc branch onto rc5, realistically the only > downside is having to send updates for all of the hashes. > > Thanks for catching this! New hashes after the rebase: [3/4] KVM: x86: Advertise AMD_IBPB_RET to userspace https://github.com/kvm-x86/linux/commit/71dd5d5300d2 [4/4] KVM: x86: AMD's IBPB is not equivalent to Intel's IBPB https://github.com/kvm-x86/linux/commit/de572491a975