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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> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @zytor.com) X-ZM-MESSAGEID: 1745310228259019100 Content-Type: text/plain; charset="utf-8" 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) =20 static __always_inline void sev_es_wr_ghcb_msr(u64 val) { - u32 low, high; - - low =3D (u32)(val); - high =3D (u32)(val >> 32); - - native_wrmsr(MSR_AMD64_SEV_ES_GHCB, low, high); + native_wrmsrq(MSR_AMD64_SEV_ES_GHCB, val); } =20 enum es_result sev_es_ghcb_hv_call(struct ghcb *ghcb, --=20 2.49.0