From nobody Thu Dec 25 03:23:37 2025 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (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 6F6243A278; Mon, 22 Jan 2024 10:27:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705919242; cv=none; b=UxppMeGgtyFhjkyR9sK7AXpURZGYnMAeGnsRpbcnQJU36IKZqVlW7apMaUGwiEvA9gVOUKm8mKrk7REW3/yFgvsfXXQxCQ6oAYN4KITtRkh/ruNOnEsF79/EgquD2v06stWt1OpHFLqftBWXzYaz+TKHk9EhhvR+7Kx0f101ls8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705919242; c=relaxed/simple; bh=jZRsclkGS8dzOt2UTjQXIJKQsS1Rrchp8mJDmNSdlyE=; h=Date:From:To:Subject:Cc:In-Reply-To:References:MIME-Version: Message-ID:Content-Type; b=owqlJ5O2xDGKokTsg2+JVqgrw8NXb3p3QBnndBCPaVb4Q3/lMfD8wws3P3+htHt6qi9DXnNl1NQw97ltWj9js7oF3/DJuSUJebKluRK2aGrOW6yQQGOIIt440OFWNuFqkUh2frfER+dDrJxFVA07HrNa0eek0qoKRTx4bcvW4MM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=C1lJ2k3a; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=6ebtxCKv; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="C1lJ2k3a"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="6ebtxCKv" Date: Mon, 22 Jan 2024 10:27:18 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1705919239; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ncIERaOhSVJFWuDUSs8GuA6Uftk7aWWlnT/dEMBjjz0=; b=C1lJ2k3ajuiHnVgPXtQeplF82Nte+p4spxCXUpvDDNH4svwVGEiaWhlKw8bA1qmvvNWt7M mmcEguOcOSsCO7b+AiKjslrGic9HECb3TXZ4DhnccvSOzttZlmRwuV2zA3xwprmQvU2Pq2 Es37Ed0T0Ln01omN/4kJLbA+lXYPWO2GUbOmCi1cnGoluxzyC4HzjcGkeszSU1+n/4oMdI sKZOxemtFgVzNd5oFRC9eOTOWKDGoKcwGeIv+F58lAXPIHwNVHI/idKvGdlNLNP0QDKJIj HGykhqRd74UNY9KbKkvX8nlBvH0wPrcL2rxHN7purFlxFuOoAOW+WpN/Oz8kgQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1705919239; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ncIERaOhSVJFWuDUSs8GuA6Uftk7aWWlnT/dEMBjjz0=; b=6ebtxCKvk2jfnguPa7cWf1zRftlARSLQQQQi4zK5/3oECQBP2RR6592iMZRVDlucsnMrYl JGXvwYgoJcvCZcDA== From: "tip-bot2 for Borislav Petkov (AMD)" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: x86/cpu] x86/CPU/AMD: Add X86_FEATURE_ZEN5 Cc: "Borislav Petkov (AMD)" , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20240104201138.5072-1-bp@alien8.de> References: <20240104201138.5072-1-bp@alien8.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <170591923823.398.13999497759890877846.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Precedence: bulk Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable The following commit has been merged into the x86/cpu branch of tip: Commit-ID: bbfc72531ee7ae1617b39869022ea28b9b6a1b36 Gitweb: https://git.kernel.org/tip/bbfc72531ee7ae1617b39869022ea28b9= b6a1b36 Author: Borislav Petkov (AMD) AuthorDate: Thu, 04 Jan 2024 21:11:37 +01:00 Committer: Borislav Petkov (AMD) CommitterDate: Mon, 22 Jan 2024 11:13:37 +01:00 x86/CPU/AMD: Add X86_FEATURE_ZEN5 Add a synthetic feature flag for Zen5. Signed-off-by: Borislav Petkov (AMD) Link: https://lore.kernel.org/r/20240104201138.5072-1-bp@alien8.de --- arch/x86/include/asm/cpufeatures.h | 4 +--- arch/x86/kernel/cpu/amd.c | 25 +++++++++++++++++++++---- 2 files changed, 22 insertions(+), 7 deletions(-) diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpuf= eatures.h index 29cb275..fdf723b 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -81,10 +81,8 @@ #define X86_FEATURE_K6_MTRR ( 3*32+ 1) /* AMD K6 nonstandard MTRRs */ #define X86_FEATURE_CYRIX_ARR ( 3*32+ 2) /* Cyrix ARRs (=3D MTRRs) */ #define X86_FEATURE_CENTAUR_MCR ( 3*32+ 3) /* Centaur MCRs (=3D MTRRs) */ - -/* CPU types for specific tunings: */ #define X86_FEATURE_K8 ( 3*32+ 4) /* "" Opteron, Athlon64 */ -/* FREE, was #define X86_FEATURE_K7 ( 3*32+ 5) "" Athlon */ +#define X86_FEATURE_ZEN5 ( 3*32+ 5) /* "" CPU based on Zen5 microarchitec= ture */ #define X86_FEATURE_P3 ( 3*32+ 6) /* "" P3 */ #define X86_FEATURE_P4 ( 3*32+ 7) /* "" P4 */ #define X86_FEATURE_CONSTANT_TSC ( 3*32+ 8) /* TSC ticks at a constant rat= e */ diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index 9f42d1c..bc49e3b 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -538,7 +538,7 @@ static void bsp_init_amd(struct cpuinfo_x86 *c) =20 /* Figure out Zen generations: */ switch (c->x86) { - case 0x17: { + case 0x17: switch (c->x86_model) { case 0x00 ... 0x2f: case 0x50 ... 0x5f: @@ -554,8 +554,8 @@ static void bsp_init_amd(struct cpuinfo_x86 *c) goto warn; } break; - } - case 0x19: { + + case 0x19: switch (c->x86_model) { case 0x00 ... 0x0f: case 0x20 ... 0x5f: @@ -569,7 +569,17 @@ static void bsp_init_amd(struct cpuinfo_x86 *c) goto warn; } break; - } + + case 0x1a: + switch (c->x86_model) { + case 0x00 ... 0x0f: + setup_force_cpu_cap(X86_FEATURE_ZEN5); + break; + default: + goto warn; + } + break; + default: break; } @@ -1039,6 +1049,11 @@ static void init_amd_zen4(struct cpuinfo_x86 *c) msr_set_bit(MSR_ZEN4_BP_CFG, MSR_ZEN4_BP_CFG_SHARED_BTB_FIX_BIT); } =20 +static void init_amd_zen5(struct cpuinfo_x86 *c) +{ + init_amd_zen_common(); +} + static void init_amd(struct cpuinfo_x86 *c) { u64 vm_cr; @@ -1084,6 +1099,8 @@ static void init_amd(struct cpuinfo_x86 *c) init_amd_zen3(c); else if (boot_cpu_has(X86_FEATURE_ZEN4)) init_amd_zen4(c); + else if (boot_cpu_has(X86_FEATURE_ZEN5)) + init_amd_zen5(c); =20 /* * Enable workaround for FXSAVE leak on CPUs