From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ej1-f48.google.com (mail-ej1-f48.google.com [209.85.218.48]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 03C69340A76 for ; Thu, 20 Nov 2025 13:41:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.48 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763646078; cv=none; b=Nnl76whJLNGiOydzHZZK+eLetGSKS261pUwmY8f02HHJ6nmWhrdNBzVNyxAQySt+lqMGBjvCg3cmiUzsD1qu0DFhB9C04RoQERMbdeYJRfOmOSv/58ezHaFZHKivTGIcs9PP8kkq4d+VAivqkOZVP3Z1Yw1/HmVhlmcupn+oNNw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763646078; c=relaxed/simple; bh=mqhaF5Gz0sKTdxXQIjFAIm8YhwlO/Tnjk6bafLmiRVU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=gveBQo220qxS56i7Tz3kMMjHcjsJh90uKgtEIzZ84EEMCU6roftp0P/wEaWxpMXVlMytuaAxji7UcN0hxg3rO0zNqfdrOQ4fGtN+92P5cFgbhy5JnIjgNpyGK6erJO6O6XGd69BfJGIDI3smR7SqmpZRdW6JvPPQ8ecAdk8Lmn8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=PqO2NbVQ; arc=none smtp.client-ip=209.85.218.48 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="PqO2NbVQ" Received: by mail-ej1-f48.google.com with SMTP id a640c23a62f3a-b736ffc531fso140126366b.1 for ; Thu, 20 Nov 2025 05:41:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1763646075; x=1764250875; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=NpYFDzUQAIL7AtCSG/QKPMFyk7ggRbL0aM/xfsBLsPo=; b=PqO2NbVQh3bo0Gkwt8fVINd/3sPbCyN0t3I/ekjyY1RJlMBG5BapBbOhJ0U/xI49ZI eEz7tpX5a6hUBvmLrZ0wO/3Zleid4/IJPheUmVawpBy550Yliw13GxeZ/cCh3uFcU+sT H1pvBtBVkruKtS01wo9tDSqeLuJ0yjbeho6bvTM/dk6n7bswqvm7MVfXXGqKUC4XJyAm vwu1kQua8GRqzpoKPVfikGr6Sm64EAMh3JMAnFb26a0t4DEnpuUtD2mRHmviTfo1cCWo PlzJpgeGwGQi3CrUGr9fsuDMOTZJpXqTwYROobfvWn5z9j7daA84O3oQrdZ4+r/9lIvL AZCA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1763646075; x=1764250875; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=NpYFDzUQAIL7AtCSG/QKPMFyk7ggRbL0aM/xfsBLsPo=; b=HCGU7P4HN9NSNgcO0dVs1OH4Me04DyIAOI4vShmPhGkRnIBWg3nkTkTQXHWUwjnqlI FYPl/92Yh9AFKCzryRobQkmmonYdhx9RF45+SWZYgduwTA/amyt8dIiE1KW1PAeH76Zi EMT0KB+lzRQre1CmuDXVR7uxM3P4TNwenJA/Ew0RlcAJBI/yPF/gplOP95CTbG+d9MHX TXZU9dKkCnXuqlYAuBN1EPERkXD1Wj+SCJ2zR9wy5UzS6mDm9Pkw4rod+15BE4sb/MKc 8gztAymIG708qyutTkpwXn8MVlA6eh8Od2Dmz3/wj3wAsnc4q3ZYOMBJs+6kGdjFVgqO mBlw== X-Forwarded-Encrypted: i=1; AJvYcCWvDNyvB+Q20SYtKIPhb8aUGZcTBuWXCnTGj0TOv7ndCkRvkwd4KdsC0Tud/O3ESZ+LelGYz4RJQJTARQ0=@vger.kernel.org X-Gm-Message-State: AOJu0YzteUCqpOIAimfGgcZNNY2tLvvcdZTi3SPzGtbVsib1sApWBYqq OXvuImaExw+iM1Btw8lULmoQP2d7j5ik1MQUuZS41aiKaEl+3ypxXhqx X-Gm-Gg: ASbGnctRM1AmQ0lAPyyDLjoGBuaRArIr5vLRt3FeRVKnoWxc1YyMKZUU9sBUvz9EeOj /SUewOf38T6lJ5HRkeWLEvskvpKt62sgncIBZjKvTCrkzroy/9JMH6OuZlvsApWhKyYYlgIcPJk GJXL/ajQV2hp5WmAiqV/XbPciis8JtTWsoCGttt7XuldDLcy76V8ERdMfJQtf/Vu6S6NTCd44gg DkqmEEtDuSYQ9YjQfrMbgw46nNte8QpcR/rLtCl5lv08OxNCsb/wXU+Dng2acWIlYDa5JBykwgR cfx5q4pf5ZchPOSy5jbN0w8KTtJC/tynnNcBt3qDm1yrw/uFMegm1E+HJawhWfVpgmablm36Gbk jPg4FkbzdlfVNwHTZ6lXFFMngFXjOED58CpKGqkjDPCyGM9Bu/hW+KsKzYkKpVMeLi3SuPgSxof 8jV5Rs2HBEq2Y= X-Google-Smtp-Source: AGHT+IGtXZ6u4Ii3WDCWKYmQfHi3aiJVMSybQSxzVjind8B6R3+wUxpgT3Vqmcr3s3TSfED+0MFx5g== X-Received: by 2002:a17:906:6a22:b0:b76:3bfd:8afe with SMTP id a640c23a62f3a-b7658693527mr222487266b.5.1763646075211; Thu, 20 Nov 2025 05:41:15 -0800 (PST) Received: from fedora ([193.77.86.199]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b7654cdd62bsm215930866b.5.2025.11.20.05.41.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 Nov 2025 05:41:14 -0800 (PST) From: Uros Bizjak To: linux-hyperv@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org Cc: Uros Bizjak , "K. Y. Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" Subject: [PATCH 2/3] x86/hyperv: Use savesegment() instead of inline asm() to save segment registers Date: Thu, 20 Nov 2025 14:40:23 +0100 Message-ID: <20251120134105.189753-2-ubizjak@gmail.com> X-Mailer: git-send-email 2.51.1 In-Reply-To: <20251120134105.189753-1-ubizjak@gmail.com> References: <20251120134105.189753-1-ubizjak@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Use standard savesegment() utility macro to save segment registers. Signed-off-by: Uros Bizjak Cc: "K. Y. Srinivasan" Cc: Haiyang Zhang Cc: Wei Liu Cc: Dexuan Cui Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: Dave Hansen Cc: "H. Peter Anvin" --- arch/x86/hyperv/ivm.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/arch/x86/hyperv/ivm.c b/arch/x86/hyperv/ivm.c index 651771534cae..7365d8f43181 100644 --- a/arch/x86/hyperv/ivm.c +++ b/arch/x86/hyperv/ivm.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #ifdef CONFIG_AMD_MEM_ENCRYPT @@ -315,16 +316,16 @@ int hv_snp_boot_ap(u32 apic_id, unsigned long start_ip, unsigned int cpu) vmsa->gdtr.base = gdtr.address; vmsa->gdtr.limit = gdtr.size; - asm volatile("movl %%es, %%eax;" : "=a" (vmsa->es.selector)); + savesegment(es, vmsa->es.selector); hv_populate_vmcb_seg(vmsa->es, vmsa->gdtr.base); - asm volatile("movl %%cs, %%eax;" : "=a" (vmsa->cs.selector)); + savesegment(cs, vmsa->cs.selector); hv_populate_vmcb_seg(vmsa->cs, vmsa->gdtr.base); - asm volatile("movl %%ss, %%eax;" : "=a" (vmsa->ss.selector)); + savesegment(ss, vmsa->ss.selector); hv_populate_vmcb_seg(vmsa->ss, vmsa->gdtr.base); - asm volatile("movl %%ds, %%eax;" : "=a" (vmsa->ds.selector)); + savesegment(ds, vmsa->ds.selector); hv_populate_vmcb_seg(vmsa->ds, vmsa->gdtr.base); vmsa->efer = native_read_msr(MSR_EFER); -- 2.51.1