From mboxrd@z Thu Jan 1 00:00:00 1970 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 7C3931953BA; Wed, 3 Jul 2024 11:25:30 +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=1720005930; cv=none; b=tHuWiAHhftCfRws6awDrt3PyNE6lBkFyNcGLJ7Gc4lnITaNm43i3/kizZh+lHrtGBGkjrE5RI0aoSPupwOpmhG8l2niMn7VFcttdg8X3DtE4biOyf92dVUgZLTBSP26fiCNR8ik9vWeAObWjFtZPCdVB4rq9ntBo6Yfjqol9vcY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720005930; c=relaxed/simple; bh=oinZmi/8dd8P/ks9eX7N/ZxeU0OpYtyaYXKR4Qlk6FY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=h5Rw7v5HrnnycV7TUobNGXsJ77su1GmGMZIXzw2ayJLQIsqvtCdlAa6qy8Mh5D2Yo31SG3ofdFVddta+JzWVa5wm3EJVK4wqrCP31EgnFapj8GjR5bPzDitfVc6g1onNMqTcoF56ZkhPSybuzYSsaI3aJw85XfaZLY5rFOHoejk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=qsR24h8/; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="qsR24h8/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EE0F9C2BD10; Wed, 3 Jul 2024 11:25:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1720005930; bh=oinZmi/8dd8P/ks9eX7N/ZxeU0OpYtyaYXKR4Qlk6FY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qsR24h8/eOt5KiSlt+joO+Y/+dNffqBLuo4we5pLReDAiliGtgad3ubPstOx9RvfX t0t5uT3jiYj69+MkLuJTV1w8dhusKDjKn4LqXco1VAT81h5WuoZMZ661pehXpxLfQN uv/WVgEsaFTv36v1jr5II/wHFe5YehTwzNsHj3W8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Tony Luck , "Borislav Petkov (AMD)" , Thomas Gleixner , Sasha Levin Subject: [PATCH 5.15 242/356] x86/cpu/vfm: Add new macros to work with (vendor/family/model) values Date: Wed, 3 Jul 2024 12:39:38 +0200 Message-ID: <20240703102922.268948038@linuxfoundation.org> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240703102913.093882413@linuxfoundation.org> References: <20240703102913.093882413@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Tony Luck [ Upstream commit e6dfdc2e89a0adedf455814c91b977d6a584cc88 ] To avoid adding a slew of new macros for each new Intel CPU family switch over from providing CPU model number #defines to a new scheme that encodes vendor, family, and model in a single number. [ bp: s/casted/cast/g ] Signed-off-by: Tony Luck Signed-off-by: Borislav Petkov (AMD) Reviewed-by: Thomas Gleixner Link: https://lore.kernel.org/r/20240416211941.9369-3-tony.luck@intel.com Stable-dep-of: 93022482b294 ("x86/cpu: Fix x86_match_cpu() to match just X86_VENDOR_INTEL") Signed-off-by: Sasha Levin --- arch/x86/include/asm/cpu_device_id.h | 93 ++++++++++++++++++++++++++++ 1 file changed, 93 insertions(+) diff --git a/arch/x86/include/asm/cpu_device_id.h b/arch/x86/include/asm/cpu_device_id.h index eb8fcede9e3bf..dd7b9463696f5 100644 --- a/arch/x86/include/asm/cpu_device_id.h +++ b/arch/x86/include/asm/cpu_device_id.h @@ -2,6 +2,39 @@ #ifndef _ASM_X86_CPU_DEVICE_ID #define _ASM_X86_CPU_DEVICE_ID +/* + * Can't use because it generates expressions that + * cannot be used in structure initializers. Bitfield construction + * here must match the union in struct cpuinfo_86: + * union { + * struct { + * __u8 x86_model; + * __u8 x86; + * __u8 x86_vendor; + * __u8 x86_reserved; + * }; + * __u32 x86_vfm; + * }; + */ +#define VFM_MODEL_BIT 0 +#define VFM_FAMILY_BIT 8 +#define VFM_VENDOR_BIT 16 +#define VFM_RSVD_BIT 24 + +#define VFM_MODEL_MASK GENMASK(VFM_FAMILY_BIT - 1, VFM_MODEL_BIT) +#define VFM_FAMILY_MASK GENMASK(VFM_VENDOR_BIT - 1, VFM_FAMILY_BIT) +#define VFM_VENDOR_MASK GENMASK(VFM_RSVD_BIT - 1, VFM_VENDOR_BIT) + +#define VFM_MODEL(vfm) (((vfm) & VFM_MODEL_MASK) >> VFM_MODEL_BIT) +#define VFM_FAMILY(vfm) (((vfm) & VFM_FAMILY_MASK) >> VFM_FAMILY_BIT) +#define VFM_VENDOR(vfm) (((vfm) & VFM_VENDOR_MASK) >> VFM_VENDOR_BIT) + +#define VFM_MAKE(_vendor, _family, _model) ( \ + ((_model) << VFM_MODEL_BIT) | \ + ((_family) << VFM_FAMILY_BIT) | \ + ((_vendor) << VFM_VENDOR_BIT) \ +) + /* * Declare drivers belonging to specific x86 CPUs * Similar in spirit to pci_device_id and related PCI functions @@ -49,6 +82,16 @@ .driver_data = (unsigned long) _data \ } +#define X86_MATCH_VENDORID_FAM_MODEL_STEPPINGS_FEATURE(_vendor, _family, _model, \ + _steppings, _feature, _data) { \ + .vendor = _vendor, \ + .family = _family, \ + .model = _model, \ + .steppings = _steppings, \ + .feature = _feature, \ + .driver_data = (unsigned long) _data \ +} + /** * X86_MATCH_VENDOR_FAM_MODEL_FEATURE - Macro for CPU matching * @_vendor: The vendor name, e.g. INTEL, AMD, HYGON, ..., ANY @@ -164,6 +207,56 @@ X86_MATCH_VENDOR_FAM_MODEL_STEPPINGS_FEATURE(INTEL, 6, INTEL_FAM6_##model, \ steppings, X86_FEATURE_ANY, data) +/** + * X86_MATCH_VFM - Match encoded vendor/family/model + * @vfm: Encoded 8-bits each for vendor, family, model + * @data: Driver specific data or NULL. The internal storage + * format is unsigned long. The supplied value, pointer + * etc. is cast to unsigned long internally. + * + * Stepping and feature are set to wildcards + */ +#define X86_MATCH_VFM(vfm, data) \ + X86_MATCH_VENDORID_FAM_MODEL_STEPPINGS_FEATURE( \ + VFM_VENDOR(vfm), \ + VFM_FAMILY(vfm), \ + VFM_MODEL(vfm), \ + X86_STEPPING_ANY, X86_FEATURE_ANY, data) + +/** + * X86_MATCH_VFM_STEPPINGS - Match encoded vendor/family/model/stepping + * @vfm: Encoded 8-bits each for vendor, family, model + * @steppings: Bitmask of steppings to match + * @data: Driver specific data or NULL. The internal storage + * format is unsigned long. The supplied value, pointer + * etc. is cast to unsigned long internally. + * + * feature is set to wildcard + */ +#define X86_MATCH_VFM_STEPPINGS(vfm, steppings, data) \ + X86_MATCH_VENDORID_FAM_MODEL_STEPPINGS_FEATURE( \ + VFM_VENDOR(vfm), \ + VFM_FAMILY(vfm), \ + VFM_MODEL(vfm), \ + steppings, X86_FEATURE_ANY, data) + +/** + * X86_MATCH_VFM_FEATURE - Match encoded vendor/family/model/feature + * @vfm: Encoded 8-bits each for vendor, family, model + * @feature: A X86_FEATURE bit + * @data: Driver specific data or NULL. The internal storage + * format is unsigned long. The supplied value, pointer + * etc. is cast to unsigned long internally. + * + * Steppings is set to wildcard + */ +#define X86_MATCH_VFM_FEATURE(vfm, feature, data) \ + X86_MATCH_VENDORID_FAM_MODEL_STEPPINGS_FEATURE( \ + VFM_VENDOR(vfm), \ + VFM_FAMILY(vfm), \ + VFM_MODEL(vfm), \ + X86_STEPPING_ANY, feature, data) + /* * Match specific microcode revisions. * -- 2.43.0