From: Guodong Xu <guodong.xu@oss.qualcomm.com>
To: "Radim Krčmář" <radim.krcmar@oss.qualcomm.com>
Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org,
Paul Walmsley <pjw@kernel.org>,
Palmer Dabbelt <palmer@dabbelt.com>,
Alexandre Ghiti <alex@ghiti.fr>,
Samuel Holland <samuel.holland@sifive.com>,
Andy Chiu <andybnac@gmail.com>, Zong Li <zong.li@sifive.com>,
Charlie Jenkins <thecharlesjenkins@gmail.com>
Subject: Re: [PATCH 2/6] riscv: hwprobe: Report Zicbom and Zicboz only when available
Date: Sun, 08 Nov 2026 05:45:55 -0500 [thread overview]
Message-ID: <db17b70b6b6e4da56513d8886a5ef51b.guodong.xu@oss.qualcomm.com> (raw)
In-Reply-To: <20261006075303.205216-3-radim.krcmar@oss.qualcomm.com>
On 2026-10-06 09:52, Radim Krčmář wrote:
>User-mode use of Zicbom and Zicboz requires senvcfg.CBCFE and
>senvcfg.CBZE, respectively, which we set only when all harts have the
>extension. hwprobe reports the extensions from the per-hart ISA bitmaps
>alone, so it can advertise extensions that are always disabled in
>user-mode.
>
>Report correct environment to user-mode.
>
>Fixes: 1b57747e978f ("riscv: Enable cbo.zero only when all harts support Zicboz")
>Fixes: eb1003970940 ("RISC-V: hwprobe: Expose Zicbom extension and its block size")
>Signed-off-by: Radim Krčmář <radim.krcmar@oss.qualcomm.com>
Reviewed-by: Guodong Xu <guodong.xu@oss.qualcomm.com>
(Resending: the first copy of this mail bounced from the lists because
of a corrupted Cc header.)
next prev parent reply other threads:[~2026-11-08 10:46 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-06 7:52 [PATCH 0/6] riscv: hwprobe: do not report disabled extensions Radim Krčmář
2026-10-06 7:52 ` [PATCH 1/6] riscv: hwprobe: Report FP extensions only when available Radim Krčmář
2026-10-06 23:54 ` Charlie Jenkins
2026-10-07 7:46 ` Radim Krčmář
2026-10-07 8:05 ` Charlie Jenkins
2026-11-08 4:16 ` guodong.xu
2026-10-16 21:04 ` Andy Chiu
2026-10-06 7:52 ` [PATCH 2/6] riscv: hwprobe: Report Zicbom and Zicboz " Radim Krčmář
2026-10-16 4:28 ` Charlie Jenkins
2026-10-16 21:06 ` Andy Chiu
2026-11-08 10:45 ` Guodong Xu [this message]
2026-10-06 7:53 ` [PATCH 3/6] riscv: hwprobe: Report Zicfilp and Zicfiss " Radim Krčmář
2026-10-16 4:28 ` Charlie Jenkins
2026-10-16 21:09 ` Andy Chiu
2026-11-08 10:05 ` Guodong Xu
2026-10-06 7:53 ` [PATCH 4/6] riscv: hwprobe: Report Supm " Radim Krčmář
2026-10-16 4:28 ` Charlie Jenkins
2026-10-16 21:26 ` Andy Chiu
2026-10-16 21:45 ` Andy Chiu
2026-10-20 10:00 ` Radim Krčmář
2026-11-08 11:24 ` [PATCH 4/6] " Guodong Xu
2026-10-06 7:53 ` [PATCH 5/6] riscv: hwprobe: Report XTheadVector " Radim Krčmář
2026-10-06 23:54 ` Charlie Jenkins
2026-10-07 7:59 ` Radim Krčmář
2026-10-07 8:07 ` Charlie Jenkins
2026-10-16 21:48 ` Andy Chiu
2026-10-06 7:53 ` [PATCH 6/6] riscv: hwprobe: Report SiFive vector extensions " Radim Krčmář
2026-10-16 21:55 ` Andy Chiu
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