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 D2B97205E3C; Wed, 19 Mar 2025 14:36:27 +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=1742394987; cv=none; b=AzBCIPOsq2TkAIMBOgXGh1mh2kasoqCWcIg0x2wjQhvq8NFNFutj/p0NnxmA1d/6Q+xgSu5kpKbYQVSVERUIBd7+sRxan9W98ZsyrllWogiN/cFOTVlekaoYb7gngsxF6nMGdH1gOpbZz/POWonubsy1K3xd1FMs9Vh8/YwFA0Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742394987; c=relaxed/simple; bh=Mo9Ukl6HLMRSZmotiChyxKFHJkP9MYi54Rckh0XfVek=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ZFP0abVPzGmqGAOtCtk7OkWcAqcGNGRu6v8i/31TztP6tIdd6iIDRsj5ye71sBNPdXEG8HC1XIK/+EpXgQ0ryseE1SdanYTrGVWHRt8vSLK1kN4MVskXn3QJDaT2oomRKuc6Xr8J4LFg/0bocSmrYzPQNEIJXVzVDOr/kJrp23w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Ixrtw/7l; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Ixrtw/7l" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A980FC4CEE4; Wed, 19 Mar 2025 14:36:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1742394987; bh=Mo9Ukl6HLMRSZmotiChyxKFHJkP9MYi54Rckh0XfVek=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Ixrtw/7l2A8XYMDz3H33crD0u5cQldf7PPcZRmmhjyFlsf/wB3fbCX3GrMCJjZhVo 7W3X0w9nGIoj357iqhX1HJyM8qb7HbCRPACEI15Fbk8uWSkszdP8jl8kX9Yq6BGi4i Dp8UfWSCxnw38zRHWKWomm3H+mYvObZzcDgejGNY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Ye Li , Ajay Kaher , Ingo Molnar , Kevin Loughlin , "Borislav Petkov (AMD)" , Sasha Levin Subject: [PATCH 6.13 228/241] x86/vmware: Parse MP tables for SEV-SNP enabled guests under VMware hypervisors Date: Wed, 19 Mar 2025 07:31:38 -0700 Message-ID: <20250319143033.381869984@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250319143027.685727358@linuxfoundation.org> References: <20250319143027.685727358@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.13-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ajay Kaher [ Upstream commit a2ab25529bbcea51b5e01dded79f45aeb94f644a ] Under VMware hypervisors, SEV-SNP enabled VMs are fundamentally able to boot without UEFI, but this regressed a year ago due to: 0f4a1e80989a ("x86/sev: Skip ROM range scans and validation for SEV-SNP guests") In this case, mpparse_find_mptable() has to be called to parse MP tables which contains the necessary boot information. [ mingo: Updated the changelog. ] Fixes: 0f4a1e80989a ("x86/sev: Skip ROM range scans and validation for SEV-SNP guests") Co-developed-by: Ye Li Signed-off-by: Ye Li Signed-off-by: Ajay Kaher Signed-off-by: Ingo Molnar Tested-by: Ye Li Reviewed-by: Kevin Loughlin Acked-by: Borislav Petkov (AMD) Link: https://lore.kernel.org/r/20250313173111.10918-1-ajay.kaher@broadcom.com Signed-off-by: Sasha Levin --- arch/x86/kernel/cpu/vmware.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/x86/kernel/cpu/vmware.c b/arch/x86/kernel/cpu/vmware.c index 00189cdeb775f..cb3f900c46fcc 100644 --- a/arch/x86/kernel/cpu/vmware.c +++ b/arch/x86/kernel/cpu/vmware.c @@ -26,6 +26,7 @@ #include #include #include +#include #include #include #include @@ -429,6 +430,9 @@ static void __init vmware_platform_setup(void) pr_warn("Failed to get TSC freq from the hypervisor\n"); } + if (cc_platform_has(CC_ATTR_GUEST_SEV_SNP) && !efi_enabled(EFI_BOOT)) + x86_init.mpparse.find_mptable = mpparse_find_mptable; + vmware_paravirt_ops_setup(); #ifdef CONFIG_X86_IO_APIC -- 2.39.5