From patchwork Tue Apr 22 08:21:49 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Xin Li \(Intel\)" X-Patchwork-Id: 884224 Received: from mail.zytor.com (terminus.zytor.com [198.137.202.136]) (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 D0E36266581; Tue, 22 Apr 2025 08:23:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.136 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745310240; cv=none; b=Oius4/7wtBh4SlwqUSLmkTnkERay87x4tQPxshgFNW0On33MqrEkuzsdvk3sI0ZlJ2KO+ps9xqhiuXgqKExZQIACaCfWsWpd2yh7E3pSlCscN7cHE1wwL4udgmMbtk6NFY6SDDTq27zDb9zCYojFMhqgOPG98t7t8pq09Y/nSqc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745310240; c=relaxed/simple; bh=mXHs9XWSjNOs2MwMruMnotiL7mSYRgEHo8iZA6y9x1U=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ciG6NOQglkXH5+5j5am25d9HLz8pGuN8QkLSBV47so4lKWZePt5dWe3cPBj9/eDQiul8hKLSvqXP5iqDhjkJ1gn9w9e7jhL+BBuGEv2768gmTCwB7WUkHOPzieYhEVmsdUbHMI0HP5Jx3jGjS9pnfhCFseMHNNkfBhAvAItN3oY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zytor.com; spf=pass smtp.mailfrom=zytor.com; dkim=pass (2048-bit key) header.d=zytor.com header.i=@zytor.com header.b=JnM1tOMn; arc=none smtp.client-ip=198.137.202.136 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zytor.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=zytor.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=zytor.com header.i=@zytor.com header.b="JnM1tOMn" Received: from terminus.zytor.com (terminus.zytor.com [IPv6:2607:7c80:54:3:0:0:0:136]) (authenticated bits=0) by mail.zytor.com (8.18.1/8.17.1) with ESMTPSA id 53M8MG9M1954391 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Tue, 22 Apr 2025 01:22:36 -0700 DKIM-Filter: OpenDKIM Filter v2.11.0 mail.zytor.com 53M8MG9M1954391 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zytor.com; s=2025042001; t=1745310158; bh=ZDjz7zZ6jpSk7UYBX1f+/D6FpEpADYtgSJeGI0K8PfU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JnM1tOMn1uOqwogaGDb5MA0EnSbBUePNLnpaO/hoa8wawH5peRy9eV+Mxx6gdUAsP 4J+kDIbBA+tj1HaAosm+HAGN3bs6BDN2tw/gvDOb3rz0QBzJKtmPhVFCU1gjPZARLN cVFTJm2CNABewq6f0h4AUzPrxnKJY7GgDt4k+LmQnyeNf/IJcVPLHUmkr4KgzM4ddw cpG5h9ajIgNj3NZXg8iZqKaJefvUYCb83TLTbKiVCSqsmym2tgrGB9O/MnG0tdrpqX e49cOPxt2MjmuEMWTIfxUCvSYUho6LiyNa9c/tKoPjWL4drYZI2WdYQ+dXK3vNAiOJ HJ3Be9VSRalww== From: "Xin Li (Intel)" To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-perf-users@vger.kernel.org, linux-hyperv@vger.kernel.org, virtualization@lists.linux.dev, linux-pm@vger.kernel.org, linux-edac@vger.kernel.org, xen-devel@lists.xenproject.org, linux-acpi@vger.kernel.org, linux-hwmon@vger.kernel.org, netdev@vger.kernel.org, platform-driver-x86@vger.kernel.org Cc: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, acme@kernel.org, jgross@suse.com, andrew.cooper3@citrix.com, peterz@infradead.org, namhyung@kernel.org, mark.rutland@arm.com, alexander.shishkin@linux.intel.com, jolsa@kernel.org, irogers@google.com, adrian.hunter@intel.com, kan.liang@linux.intel.com, wei.liu@kernel.org, ajay.kaher@broadcom.com, bcm-kernel-feedback-list@broadcom.com, tony.luck@intel.com, pbonzini@redhat.com, vkuznets@redhat.com, seanjc@google.com, luto@kernel.org, boris.ostrovsky@oracle.com, kys@microsoft.com, haiyangz@microsoft.com, decui@microsoft.com Subject: [RFC PATCH v2 08/34] x86/msr: Convert a native_wrmsr() use to native_wrmsrq() Date: Tue, 22 Apr 2025 01:21:49 -0700 Message-ID: <20250422082216.1954310-9-xin@zytor.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250422082216.1954310-1-xin@zytor.com> References: <20250422082216.1954310-1-xin@zytor.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Convert a native_wrmsr() use to native_wrmsrq() to zap meaningless type conversions when a u64 MSR value is splitted into two u32. Signed-off-by: Xin Li (Intel) --- arch/x86/include/asm/sev-internal.h | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/arch/x86/include/asm/sev-internal.h b/arch/x86/include/asm/sev-internal.h index 73cb774c3639..9da509e52e11 100644 --- a/arch/x86/include/asm/sev-internal.h +++ b/arch/x86/include/asm/sev-internal.h @@ -101,12 +101,7 @@ static inline u64 sev_es_rd_ghcb_msr(void) static __always_inline void sev_es_wr_ghcb_msr(u64 val) { - u32 low, high; - - low = (u32)(val); - high = (u32)(val >> 32); - - native_wrmsr(MSR_AMD64_SEV_ES_GHCB, low, high); + native_wrmsrq(MSR_AMD64_SEV_ES_GHCB, val); } enum es_result sev_es_ghcb_hv_call(struct ghcb *ghcb,