From nobody Thu Oct 2 20:23:04 2025 Received: from cstnet.cn (smtp81.cstnet.cn [159.226.251.81]) (using TLSv1.2 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B58D931DDBC for ; Thu, 11 Sep 2025 12:12:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.226.251.81 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757592768; cv=none; b=DRAox7U7/w/PSKFcvczjAe/EQe/Ad4V+ZRBJzzLNF5MB2k72Gp1FGJEYZmnoqLGwuh+igJP8gFRH+n1blHBPcOv3YHa15WGAOTaf5jQQFxhVf9zRRkiwN5RUPxJ9B4bu+2KF8WbC8Is+NkYnUvC5AW/zFamPSKLp/gxdKai08jE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757592768; c=relaxed/simple; bh=QR6Fm+Z+nwKAbOQV+o7wJfhYvEYC9PS8CtBBCiNqSZg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=TUdgA9D11sHPuEXUYIk9g8TqCqklg2wy9EwTW1jK0iGpjGQaAOAS8mK4lZhwawGMW0oeN13gJoR96pSQLA8m30kcHoJsPqOJ9rfeO4dJDS0mE64bqeduivywcWADIen+G6YzXWqOcYqhWnd/5RuTpKpwOxRNHeZKLccrid1YTyw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=isrc.iscas.ac.cn; spf=pass smtp.mailfrom=isrc.iscas.ac.cn; arc=none smtp.client-ip=159.226.251.81 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=isrc.iscas.ac.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=isrc.iscas.ac.cn Received: from Mobilestation.localdomain (unknown [61.144.19.246]) by APP-03 (Coremail) with SMTP id rQCowACXq4WlvMJouiJHAg--.45651S3; Thu, 11 Sep 2025 20:12:31 +0800 (CST) From: Yao Zihong To: linux-riscv@lists.infradead.org Cc: linux-kernel@vger.kernel.org, zihong.plct@isrc.iscas.ac.cn, zihongyao@outlook.com, zhangyin2018@iscas.ac.cn, Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Charlie Jenkins , =?UTF-8?q?Cl=C3=A9ment=20L=C3=A9ger?= , Samuel Holland , Jesse Taube , =?UTF-8?q?Miquel=20Sabat=C3=A9=20Sol=C3=A0?= , Yunhui Cui Subject: [PATCH v1 1/2] uapi: riscv: hwprobe: add Zicbop extension bit and block-size key Date: Thu, 11 Sep 2025 20:12:08 +0800 Message-ID: <20250911121219.20243-2-zihong.plct@isrc.iscas.ac.cn> X-Mailer: git-send-email 2.47.2 In-Reply-To: <20250911121219.20243-1-zihong.plct@isrc.iscas.ac.cn> References: <20250911121219.20243-1-zihong.plct@isrc.iscas.ac.cn> 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-CM-TRANSID: rQCowACXq4WlvMJouiJHAg--.45651S3 X-Coremail-Antispam: 1UD129KBjvJXoW7AFyrWFWkWw15KrWkZw43ZFb_yoW8Gr4kpF WUX39xWFsIkr4xCayxt3WkXr1rJ3WkKw45tw1Uu3yUJa4xtw4rXrWDKayakF1DtryrtayI gF1Fgr4kta9rAFDanT9S1TB71UUUUUDqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUHI14x267AKxVW5JVWrJwAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWUuVWrJwAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_Jr4l82xGYIkIc2 x26xkF7I0E14v26r1I6r4UM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2z4x0 Y4vE2Ix0cI8IcVAFwI0_Jr0_JF4l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr0_Cr1l84 ACjcxK6I8E87Iv67AKxVWUJVW8JwA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_Gr0_Gr1UM2AI xVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6xIIjxv20x vE14v26r106r15McIj6I8E87Iv67AKxVWUJVW8JwAm72CE4IkC6x0Yz7v_Jr0_Gr1lF7xv r2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7M4IIrI8v6xkF7I0E8cxan2IY04 v7MxkF7I0En4kS14v26r4a6rW5MxkIecxEwVAFwVW5JwCF04k20xvY0x0EwIxGrwCF54CY xVCY1x0262kKe7AKxVWUtVW8ZwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14 v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_Jw0_GFylIxkG c2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI 0_Gr0_Cr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r1j6r4U MIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr0_Gr1UYxBIdaVFxhVjvjDU0xZFpf9x0pRIoGdUUU UU= X-CM-SenderInfo: p2lk00vjoszunw6l223fol2u1dvotugofq/ Content-Type: text/plain; charset="utf-8" Introduce RISCV_HWPROBE_EXT_ZICBOP to report presence of the Zicbop extension through sys_hwprobe(), and add RISCV_HWPROBE_KEY_ZICBOP_BLOCK_SIZE to expose the block size (in bytes) when Zicbop is supported. Signed-off-by: Yao Zihong --- arch/riscv/include/uapi/asm/hwprobe.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/riscv/include/uapi/asm/hwprobe.h b/arch/riscv/include/uap= i/asm/hwprobe.h index aaf6ad970499..c65c41a4d8ea 100644 --- a/arch/riscv/include/uapi/asm/hwprobe.h +++ b/arch/riscv/include/uapi/asm/hwprobe.h @@ -82,6 +82,7 @@ struct riscv_hwprobe { #define RISCV_HWPROBE_EXT_ZAAMO (1ULL << 56) #define RISCV_HWPROBE_EXT_ZALRSC (1ULL << 57) #define RISCV_HWPROBE_EXT_ZABHA (1ULL << 58) +#define RISCV_HWPROBE_EXT_ZICBOP (1ULL << 59) #define RISCV_HWPROBE_KEY_CPUPERF_0 5 #define RISCV_HWPROBE_MISALIGNED_UNKNOWN (0 << 0) #define RISCV_HWPROBE_MISALIGNED_EMULATED (1 << 0) @@ -106,6 +107,7 @@ struct riscv_hwprobe { #define RISCV_HWPROBE_KEY_VENDOR_EXT_THEAD_0 11 #define RISCV_HWPROBE_KEY_ZICBOM_BLOCK_SIZE 12 #define RISCV_HWPROBE_KEY_VENDOR_EXT_SIFIVE_0 13 +#define RISCV_HWPROBE_KEY_ZICBOP_BLOCK_SIZE 14 /* Increase RISCV_HWPROBE_MAX_KEY when adding items. */ =20 /* Flags */ --=20 2.47.2 From nobody Thu Oct 2 20:23:04 2025 Received: from cstnet.cn (smtp81.cstnet.cn [159.226.251.81]) (using TLSv1.2 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4FBD918C031 for ; Thu, 11 Sep 2025 12:13:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.226.251.81 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757592784; cv=none; b=h8Fy6088uG+G3Svrn5tfldo3dIHWT2cgiZwMTlEKjeGFjW54TB0h5es9dqJfHjcMbWnohEIaMVUvPjJdDtkp8ur1JRaqDcJ7YspQXlBAjkcK3bV4ERGWZFwnJb78CYmW9SDwXOvxyixhItgPVPNKn3YaRX8a+f5uqhYn6zUnXr4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757592784; c=relaxed/simple; bh=4cxIUpfERdxVBQH+8YFM0cmNPO71wROCYNu2hLD/+mk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Xu26s2pLLHBSkGQ/e5mOOenda4ioZgrEPc6mUcff+zbDpp1QeMSvLRrZBJ47CNGnfVGHmI9lcQzQQcR9NcnLM/1hERSkl2Bv+BtetAWlFi1Uhn+SiqQrs0Atgfo+KuzgRWEpFzyzhmlnULZlpYKfS+29jcwhUFLsE8UmkCkjfmU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=isrc.iscas.ac.cn; spf=pass smtp.mailfrom=isrc.iscas.ac.cn; arc=none smtp.client-ip=159.226.251.81 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=isrc.iscas.ac.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=isrc.iscas.ac.cn Received: from Mobilestation.localdomain (unknown [61.144.19.246]) by APP-03 (Coremail) with SMTP id rQCowACXq4WlvMJouiJHAg--.45651S4; Thu, 11 Sep 2025 20:12:42 +0800 (CST) From: Yao Zihong To: linux-riscv@lists.infradead.org Cc: linux-kernel@vger.kernel.org, zihong.plct@isrc.iscas.ac.cn, zihongyao@outlook.com, zhangyin2018@iscas.ac.cn, Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Charlie Jenkins , =?UTF-8?q?Cl=C3=A9ment=20L=C3=A9ger?= , Jesse Taube , =?UTF-8?q?Miquel=20Sabat=C3=A9=20Sol=C3=A0?= , Samuel Holland , =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= , Nam Cao , Yunhui Cui Subject: [PATCH v1 2/2] riscv: hwprobe: report Zicbop presence and block size Date: Thu, 11 Sep 2025 20:12:09 +0800 Message-ID: <20250911121219.20243-3-zihong.plct@isrc.iscas.ac.cn> X-Mailer: git-send-email 2.47.2 In-Reply-To: <20250911121219.20243-1-zihong.plct@isrc.iscas.ac.cn> References: <20250911121219.20243-1-zihong.plct@isrc.iscas.ac.cn> 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-CM-TRANSID: rQCowACXq4WlvMJouiJHAg--.45651S4 X-Coremail-Antispam: 1UD129KBjvdXoWruw4DWF18Ww1fJr48trykuFg_yoWkurX_uw nrWas8C348CFW09FWvkw4FywsIyw4kJa48Ar1ftr1UZ3WDZryUWas8Ca47Ww1DZ3WkWasx CFZ5WasFv3W7ZjkaLaAFLSUrUUUUbb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUblxFF20E14v26rWj6s0DM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6r1S6rWUM7CIcVAFz4kK6r1j6r18M28IrcIa0xkI8VA2jI8067AKxVWUXwA2048vs2IY02 0Ec7CjxVAFwI0_Xr0E3s1l8cAvFVAK0II2c7xJM28CjxkF64kEwVA0rcxSw2x7M28EF7xv wVC0I7IYx2IY67AKxVWUJVWUCwA2z4x0Y4vE2Ix0cI8IcVCY1x0267AKxVW8JVWxJwA2z4 x0Y4vEx4A2jsIE14v26r1j6r4UM28EF7xvwVC2z280aVCY1x0267AKxVW8JVW8Jr1le2I2 62IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E2Ix0cI8IcV AFwI0_JrI_JrylYx0Ex4A2jsIE14v26r1j6r4UMcvjeVCFs4IE7xkEbVWUJVW8JwACjcxG 0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lFIxGxcIEc7CjxVA2Y2ka0xkIwI 1lc7CjxVAaw2AFwI0_GFv_Wrylc2xSY4AK67AK6ryUMxAIw28IcxkI7VAKI48JMxAqzxv2 6xkF7I0En4kS14v26r1q6r43MxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrVAFwI 0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVW8ZVWrXwCIc40Y 0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8IcVCY1x0267AKxV W8JVWxJwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Jr0_Gr1l IxAIcVC2z280aVCY1x0267AKxVW8JVW8JrUvcSsGvfC2KfnxnUUI43ZEXa7sRihSdDUUUU U== X-CM-SenderInfo: p2lk00vjoszunw6l223fol2u1dvotugofq/ Content-Type: text/plain; charset="utf-8" Plumb Zicbop into sys_hwprobe. Semantics mirror Zicbom/Zicboz to keep userspace expectations aligned. Signed-off-by: Yao Zihong --- arch/riscv/kernel/sys_hwprobe.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/riscv/kernel/sys_hwprobe.c b/arch/riscv/kernel/sys_hwprob= e.c index 0b170e18a2be..857d4e602e76 100644 --- a/arch/riscv/kernel/sys_hwprobe.c +++ b/arch/riscv/kernel/sys_hwprobe.c @@ -112,6 +112,7 @@ static void hwprobe_isa_ext0(struct riscv_hwprobe *pair, EXT_KEY(ZCB); EXT_KEY(ZCMOP); EXT_KEY(ZICBOM); + EXT_KEY(ZICBOP); EXT_KEY(ZICBOZ); EXT_KEY(ZICNTR); EXT_KEY(ZICOND); @@ -294,6 +295,11 @@ static void hwprobe_one_pair(struct riscv_hwprobe *pai= r, if (hwprobe_ext0_has(cpus, RISCV_HWPROBE_EXT_ZICBOM)) pair->value =3D riscv_cbom_block_size; break; + case RISCV_HWPROBE_KEY_ZICBOP_BLOCK_SIZE: + pair->value =3D 0; + if (hwprobe_ext0_has(cpus, RISCV_HWPROBE_EXT_ZICBOP)) + pair->value =3D riscv_cbop_block_size; + break; case RISCV_HWPROBE_KEY_HIGHEST_VIRT_ADDRESS: pair->value =3D user_max_virt_addr(); break; --=20 2.47.2