From nobody Sat Feb 7 05:57:32 2026 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.223.131]) (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 26B7C38E120 for ; Mon, 19 Jan 2026 18:27:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=195.135.223.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768847225; cv=none; b=L4JN1XsoOzhb+cld5cnUUr0wYga2pze2dSaLms92HaNDg4tRpkFl0OpIYPg/hirlBB0BXJMmD3++UUaH9HFGjxkaS3MOQ8l4qnM7u1PzKaUPRgQTrvLqkmxkiC3SQLII8mU8Odvw0CgfzCWGA3o8DNWgdkkaK9HBCRfTEz2Si40= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768847225; c=relaxed/simple; bh=NKnyy+28heQrQVvqFjW4c9Kdt9zVlko//yAXV7+3r5s=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Yuiaiq5wdFRVutzCG3JOUNJdrV1AUNZPLVhAtjfAVTqQkLvMLq8dikss+6ScWSrhSQ6wq7n1IaYUYJDP2+6SLJUMwnYlFwsI9RkELKKV7FE4KX0hvITfFaeItQi12dD1ModRiJoTriSDQZRVzbewWObUpWGWNGWpv1KJFCz/JFQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com; spf=pass smtp.mailfrom=suse.com; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b=fObPJp4b; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b=fObPJp4b; arc=none smtp.client-ip=195.135.223.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=suse.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b="fObPJp4b"; dkim=pass (1024-bit key) header.d=suse.com header.i=@suse.com header.b="fObPJp4b" Received: from imap1.dmz-prg2.suse.org (unknown [10.150.64.97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 0C3585BCCE; Mon, 19 Jan 2026 18:26:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1768847219; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=yD1auZnKoFH2aJ6RcWQjKdA4hVTEGkXYbSdsfABaj6I=; b=fObPJp4beX7JVacaZDvXUbDc4UBeCk6GunsChfgHjH1dHMKkJUMOql7vhDOj1VmrCK13fP HoGiHXhsDxqU27vcI1HlcnFRlkD6fXBuN4nEM+MItuB4v/MBkWEixkNEMr8BQA6yrbJ9nq 5nTYFT1l6FGhSpUbtj6EXMyqhd2sSEU= Authentication-Results: smtp-out2.suse.de; none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1768847219; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=yD1auZnKoFH2aJ6RcWQjKdA4hVTEGkXYbSdsfABaj6I=; b=fObPJp4beX7JVacaZDvXUbDc4UBeCk6GunsChfgHjH1dHMKkJUMOql7vhDOj1VmrCK13fP HoGiHXhsDxqU27vcI1HlcnFRlkD6fXBuN4nEM+MItuB4v/MBkWEixkNEMr8BQA6yrbJ9nq 5nTYFT1l6FGhSpUbtj6EXMyqhd2sSEU= Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id ADE3B3EA63; Mon, 19 Jan 2026 18:26:58 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id IvR/KHJ3bmlSaQAAD6G6ig (envelope-from ); Mon, 19 Jan 2026 18:26:58 +0000 From: Juergen Gross To: linux-kernel@vger.kernel.org, x86@kernel.org Cc: Juergen Gross , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" Subject: [PATCH v4 4/6] x86/io: Remove REALLY_SLOW_IO handling Date: Mon, 19 Jan 2026 19:26:30 +0100 Message-ID: <20260119182632.596369-5-jgross@suse.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119182632.596369-1-jgross@suse.com> References: <20260119182632.596369-1-jgross@suse.com> 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 X-Spamd-Result: default: False [-2.80 / 50.00]; BAYES_HAM(-3.00)[100.00%]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_MISSING_CHARSET(0.50)[]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; FUZZY_RATELIMITED(0.00)[rspamd.com]; RCPT_COUNT_SEVEN(0.00)[8]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; DKIM_SIGNED(0.00)[suse.com:s=susede1]; URIBL_BLOCKED(0.00)[imap1.dmz-prg2.suse.org:helo,suse.com:mid,suse.com:email]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.com:mid,suse.com:email]; RCVD_TLS_ALL(0.00)[] X-Spam-Flag: NO X-Spam-Score: -2.80 X-Spam-Level: Content-Type: text/plain; charset="utf-8" As there is no user of REALLY_SLOW_IO left, remove the related handling from arch/x86/include/asm/io.h. Signed-off-by: Juergen Gross --- arch/x86/include/asm/io.h | 5 ----- 1 file changed, 5 deletions(-) diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h index 8a9292ce7d2d..843f23044754 100644 --- a/arch/x86/include/asm/io.h +++ b/arch/x86/include/asm/io.h @@ -254,11 +254,6 @@ static inline void slow_down_io(void) return; =20 native_io_delay(); -#ifdef REALLY_SLOW_IO - native_io_delay(); - native_io_delay(); - native_io_delay(); -#endif } =20 #define BUILDIO(bwl, type) \ --=20 2.52.0