From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 601B11E9B38 for ; Thu, 10 Apr 2025 15:53:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744300415; cv=none; b=B4mSnRtlghyFXQzgmDrQuG56qg+D3kujBDTsfdlyzPBm8GlNoi7gNbp16oCBsDsBfzfVCtDb6U/92Lh9xMvy8wzER4BzbevbF2oXXuSWCgm9bsv41ASsAbnEs34ViNRD/ShKNreM8sQS9pbiyODg7iJN4jqdEeG6VDUAShhGmTA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744300415; c=relaxed/simple; bh=lRMqFF8inLhkctx9sAjt4aiwRsYeKLWnIeO+H+OTpWI=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=bRMavUc17EseWwsVWw3f7dvoAUfJAVp4pgli1+o6PbNdMHGiq1G6w+JR9KSmYK9/wZ3cLt5l+mGeF0AMDU0aIYznBzES77Jvj3h8bmvdw8nMkAAkLZqCjE/CFZPkCiR8Berjn438cKreEO0kr5KRRpL8mzv2sHOs2adgo3mgemI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=LOpEsn13; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="LOpEsn13" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 435A7C4CEDD; Thu, 10 Apr 2025 15:53:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1744300414; bh=lRMqFF8inLhkctx9sAjt4aiwRsYeKLWnIeO+H+OTpWI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LOpEsn13SCIh4enNZUGEARrjCQJn/xKiTR5UpPYJb22/YP+4aA2E7R9atCI7yhJ7X k38k5k6XGeqF+djSSVWFPQzJYcYPnG7XRPypqakGc6dQxzAyvN4h26Z6vfkdFypbBV f0Q3PyPlI5KBFCI352y6W6OY3dzigbN5pfucvkw+7NY782XWL+F4C02s+6ASKNiTsq 2Ghv/HR7nwzSuln3id/rQvAyhH0ueuCHqYkRL0kv3aXcY3AAJeoKdEn8cqGKRl+6Zu T+iyTGsSmQ8LfbesG29pUdr1TqYh+5ZyMYmWupLJRjUPPyzE+y1qHJiq375OqXZX9j urNUHGXS1sIRg== From: Sasha Levin To: stable@vger.kernel.org, broonie@kernel.org Cc: Sasha Levin Subject: Re: [PATCH 5.15 v3 02/11] KVM: arm64: Always start with clearing SVE flag on load Date: Thu, 10 Apr 2025 11:53:32 -0400 Message-Id: <20250410112437-6c51badd1fa7bb35@stable.kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250408-stable-sve-5-15-v3-2-ca9a6b850f55@kernel.org> References: Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit [ Sasha's backport helper bot ] Hi, Summary of potential issues: ℹ️ This is part 02/11 of a series ❌ Build failures detected The upstream commit SHA1 provided is correct: d52d165d67c5aa26c8c89909003c94a66492d23d WARNING: Author mismatch between patch and upstream commit: Backport author: Mark Brown Commit author: Marc Zyngier Status in newer kernel trees: 6.14.y | Present (exact SHA1) 6.13.y | Present (exact SHA1) 6.12.y | Present (exact SHA1) 6.6.y | Present (exact SHA1) 6.1.y | Present (exact SHA1) Note: The patch differs from the upstream commit: --- 1: d52d165d67c5a ! 1: ab39b2accf324 KVM: arm64: Always start with clearing SVE flag on load @@ Metadata ## Commit message ## KVM: arm64: Always start with clearing SVE flag on load + [ Upstream commit d52d165d67c5aa26c8c89909003c94a66492d23d ] + On each vcpu load, we set the KVM_ARM64_HOST_SVE_ENABLED flag if SVE is enabled for EL0 on the host. This is used to restore the correct state on vpcu put. @@ Commit message Cc: stable@vger.kernel.org Reviewed-by: Mark Brown Link: https://lore.kernel.org/r/20220528113829.1043361-2-maz@kernel.org + Signed-off-by: Mark Brown ## arch/arm64/kvm/fpsimd.c ## @@ arch/arm64/kvm/fpsimd.c: void kvm_arch_vcpu_load_fp(struct kvm_vcpu *vcpu) @@ arch/arm64/kvm/fpsimd.c: void kvm_arch_vcpu_load_fp(struct kvm_vcpu *vcpu) + vcpu->arch.flags &= ~KVM_ARM64_HOST_SVE_ENABLED; if (read_sysreg(cpacr_el1) & CPACR_EL1_ZEN_EL0EN) vcpu->arch.flags |= KVM_ARM64_HOST_SVE_ENABLED; - + } --- NOTE: These results are for this patch alone. Full series testing will be performed when all parts are received. Results of testing on various branches: | Branch | Patch Apply | Build Test | |---------------------------|-------------|------------| | stable/linux-6.1.y | Success | Failed | Build Errors: Build error: Segmentation fault make: *** [Makefile:1231: vmlinux] Error 139 make: Target '__all' not remade because of errors.