From nobody Wed Dec 17 20:50:16 2025 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 19E9722A7F6 for ; Fri, 14 Mar 2025 21:42:01 +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=1741988521; cv=none; b=NOIVv+PnvFpAGc6Cs0biAjbDtNRiHGhO1wpZX763EUqqUkq9q2wqxUoTMIHds/Zo6+ax7ZV2FBA2uMNJaMVgMI5LqIgWMkdBPAlCjzOdWGeDmgDgATDD21sorRNXR/QJTen52ci1KftReDuiHsqJZGc7gpXEkzsYqTZHAFBIRk0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741988521; c=relaxed/simple; bh=01H/k3p6kVZSNvrRq7ER5zQJCpyXMltkJxnFQU591jU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=tkX937K339OaEwM6mO3VUDAF7AhzUlc+4Gz8+ZBejO0ZEdqgzrgEiJtLYJjB0dRTbUbc73TF8gHZdWIXDWxZdkphIZe9E7w+xRb73URXc0GJ5RO4c1kCNKs5aKGe5wTFPUZfwNewafk9paINNDFcAOrUUlwnf6zK+TaMx2CuyWU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=JOIhAFzT; 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="JOIhAFzT" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 93DF6C4CEF0; Fri, 14 Mar 2025 21:42:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741988521; bh=01H/k3p6kVZSNvrRq7ER5zQJCpyXMltkJxnFQU591jU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JOIhAFzTGaP+bzKAzhCh8wCpPpvYWab3o+Jh6wyzpWQabPrnpV0e6ItoBF2+BaaPf mcns93oyqJ2xJASrJJrroJv6kgCshBG+2YbxaD/E//3/C1EMGPMCYrdFeXQ6RxyZ3q BGTdEjLrvOsitFbOepPnAC8IcD3u116gOeB6lGnFOQM7rvUppivzoHcG1hGSDdDso9 BCV8MsDwHffjvg/AGRzF8+qOCH9fq3lHTT6DflD/ikID2GzaNOuONuDsYtyHqEXxWk 5YZITCHiV3x17V9pEmm4ErDeofMECI5iYkKX6md6fOutkzdOJIyPS63RSXH+yDNUk3 lywgcLy3KmKaA== From: Josh Poimboeuf To: x86@kernel.org Cc: linux-kernel@vger.kernel.org, Linus Torvalds , Peter Zijlstra , Borislav Petkov , "H. Peter Anvin" , Uros Bizjak , Andrew Cooper , Ingo Molnar Subject: [PATCH 12/20] x86/cpu: Use alternative_io() in prefetch[w]() Date: Fri, 14 Mar 2025 14:41:25 -0700 Message-ID: <60361f50751e6a8e38463d1cb47687f027042321.1741988314.git.jpoimboe@kernel.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Use the new alternative_io() interface in preparation for removing alternative_input(). Signed-off-by: Josh Poimboeuf --- arch/x86/include/asm/processor.h | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/proces= sor.h index 2e9566134949..a1baf2fc5f9b 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -624,9 +624,10 @@ extern char ignore_fpu_irq; */ static inline void prefetch(const void *x) { - alternative_input(BASE_PREFETCH, - "prefetchnta %[val]", X86_FEATURE_XMM, - [val] "m" (*(const char *)x)); + alternative_io(BASE_PREFETCH, + "prefetchnta %[val]", X86_FEATURE_XMM, + ARG(), + ARG([val] "m" (*(const char *)x))); } =20 /* @@ -636,9 +637,10 @@ static inline void prefetch(const void *x) */ static __always_inline void prefetchw(const void *x) { - alternative_input(BASE_PREFETCH, - "prefetchw %[val]", X86_FEATURE_3DNOWPREFETCH, - [val] "m" (*(const char *)x)); + alternative_io(BASE_PREFETCH, + "prefetchw %[val]", X86_FEATURE_3DNOWPREFETCH, + ARG(), + ARG([val] "m" (*(const char *)x))); } =20 #define TOP_OF_INIT_STACK ((unsigned long)&init_stack + sizeof(init_stack)= - \ --=20 2.48.1