From: "Heiko Stübner" <heiko@sntech.de>
To: linux-riscv@lists.infradead.org, palmer@dabbelt.com,
anup@brainfault.org, atishp@atishpatra.org,
kvm-riscv@lists.infradead.org, kvm@vger.kernel.org
Cc: vineetg@rivosinc.com, greentime.hu@sifive.com,
guoren@linux.alibaba.com, Vincent Chen <vincent.chen@sifive.com>,
Andy Chiu <andy.chiu@sifive.com>,
Paul Walmsley <paul.walmsley@sifive.com>,
Albert Ou <aou@eecs.berkeley.edu>, Guo Ren <guoren@kernel.org>,
Conor Dooley <conor.dooley@microchip.com>,
Li Zhengyu <lizhengyu3@huawei.com>,
Xianting Tian <xianting.tian@linux.alibaba.com>,
Masahiro Yamada <masahiroy@kernel.org>,
Jisheng Zhang <jszhang@kernel.org>,
Andrew Jones <ajones@ventanamicro.com>,
Richard Henderson <richard.henderson@linaro.org>,
Andy Chiu <andy.chiu@sifive.com>
Subject: Re: [PATCH -next v17 07/20] riscv: Introduce riscv_v_vsize to record size of Vector context
Date: Fri, 31 Mar 2023 13:02:52 +0200 [thread overview]
Message-ID: <7503786.EvYhyI6sBW@diego> (raw)
In-Reply-To: <20230327164941.20491-8-andy.chiu@sifive.com>
Am Montag, 27. März 2023, 18:49:27 CEST schrieb Andy Chiu:
> From: Greentime Hu <greentime.hu@sifive.com>
>
> This patch is used to detect the size of CPU vector registers and use
> riscv_v_vsize to save the size of all the vector registers.
> It assumes all
> harts has the same capabilities in a SMP system.
is this mandated somewhere?
Because for most other things we seem to want to check that this is
actually true.
So somehow I'd expect the kernel to at least check the VLEN on each
hart and loudly complain if those do not match?
> Co-developed-by: Guo Ren <guoren@linux.alibaba.com>
> Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
> Co-developed-by: Vincent Chen <vincent.chen@sifive.com>
> Signed-off-by: Vincent Chen <vincent.chen@sifive.com>
> Signed-off-by: Greentime Hu <greentime.hu@sifive.com>
> Signed-off-by: Andy Chiu <andy.chiu@sifive.com>
> Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Tested-by: Heiko Stuebner <heiko.stuebner@vrull.eu>
Heiko
next prev parent reply other threads:[~2023-03-31 11:06 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-27 16:49 [PATCH -next v17 00/20] riscv: Add vector ISA support Andy Chiu
2023-03-27 16:49 ` [PATCH -next v17 01/20] riscv: Rename __switch_to_aux() -> fpu Andy Chiu
2023-03-27 16:49 ` [PATCH -next v17 02/20] riscv: Extending cpufeature.c to detect V-extension Andy Chiu
2023-03-31 10:45 ` Heiko Stübner
2023-03-27 16:49 ` [PATCH -next v17 03/20] riscv: Add new csr defines related to vector extension Andy Chiu
2023-03-31 16:03 ` Heiko Stübner
2023-03-27 16:49 ` [PATCH -next v17 04/20] riscv: Clear vector regfile on bootup Andy Chiu
2023-03-31 10:53 ` Heiko Stübner
2023-03-27 16:49 ` [PATCH -next v17 05/20] riscv: Disable Vector Instructions for kernel itself Andy Chiu
2023-03-31 10:56 ` Heiko Stübner
2023-03-27 16:49 ` [PATCH -next v17 06/20] riscv: Introduce Vector enable/disable helpers Andy Chiu
2023-03-31 10:56 ` Heiko Stübner
2023-03-27 16:49 ` [PATCH -next v17 07/20] riscv: Introduce riscv_v_vsize to record size of Vector context Andy Chiu
2023-03-31 11:02 ` Heiko Stübner [this message]
2023-03-27 16:49 ` [PATCH -next v17 08/20] riscv: Introduce struct/helpers to save/restore per-task Vector state Andy Chiu
2023-03-31 11:05 ` Heiko Stübner
2023-03-27 16:49 ` [PATCH -next v17 09/20] riscv: Add task switch support for vector Andy Chiu
2023-03-31 11:19 ` Heiko Stübner
2023-03-27 16:49 ` [PATCH -next v17 10/20] riscv: Allocate user's vector context in the first-use trap Andy Chiu
2023-03-28 17:22 ` Conor Dooley
2023-03-31 14:38 ` Andy Chiu
2023-03-31 13:08 ` Heiko Stübner
2023-03-27 16:49 ` [PATCH -next v17 11/20] riscv: Add ptrace vector support Andy Chiu
2023-03-28 5:53 ` Rolf Eike Beer
2023-03-28 6:46 ` Andy Chiu
2023-03-27 16:49 ` [PATCH -next v17 12/20] riscv: signal: check fp-reserved words unconditionally Andy Chiu
2023-04-01 22:21 ` Heiko Stübner
2023-03-27 16:49 ` [PATCH -next v17 13/20] riscv: signal: Add sigcontext save/restore for vector Andy Chiu
2023-04-01 22:20 ` Heiko Stübner
2023-03-27 16:49 ` [PATCH -next v17 14/20] riscv: signal: Report signal frame size to userspace via auxv Andy Chiu
2023-04-01 22:19 ` Heiko Stübner
2023-03-27 16:49 ` [PATCH -next v17 15/20] riscv: signal: validate altstack to reflect Vector Andy Chiu
2023-03-31 13:43 ` Heiko Stübner
2023-03-27 16:49 ` [PATCH -next v17 16/20] riscv: prevent stack corruption by reserving task_pt_regs(p) early Andy Chiu
2023-03-31 13:38 ` Heiko Stübner
2023-03-27 16:49 ` [PATCH -next v17 17/20] riscv: kvm: Add V extension to KVM ISA Andy Chiu
2023-03-31 13:36 ` Heiko Stübner
2023-03-27 16:49 ` [PATCH -next v17 18/20] riscv: KVM: Add vector lazy save/restore support Andy Chiu
2023-03-27 17:36 ` Anup Patel
2023-03-27 16:49 ` [PATCH -next v17 19/20] riscv: detect assembler support for .option arch Andy Chiu
2023-03-31 13:33 ` Heiko Stübner
2023-03-27 16:49 ` [PATCH -next v17 20/20] riscv: Enable Vector code to be built Andy Chiu
2023-03-31 13:32 ` Heiko Stübner
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