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, Andy Chiu <andy.chiu@sifive.com>,
Paul Walmsley <paul.walmsley@sifive.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Tom Rix <trix@redhat.com>, Andy Chiu <andy.chiu@sifive.com>
Subject: Re: [PATCH -next v17 19/20] riscv: detect assembler support for .option arch
Date: Fri, 31 Mar 2023 15:33:59 +0200 [thread overview]
Message-ID: <1936189.yKVeVyVuyW@diego> (raw)
In-Reply-To: <20230327164941.20491-20-andy.chiu@sifive.com>
Am Montag, 27. März 2023, 18:49:39 CEST schrieb Andy Chiu:
> Some extensions use .option arch directive to selectively enable certain
> extensions in parts of its assembly code. For example, Zbb uses it to
> inform assmebler to emit bit manipulation instructions. However,
> supporting of this directive only exist on GNU assembler and has not
> landed on clang at the moment, making TOOLCHAIN_HAS_ZBB depend on
> AS_IS_GNU.
>
> While it is still under review at https://reviews.llvm.org/D123515, the
> upcoming Vector patch also requires this feature in assembler. Thus,
> provide Kconfig AS_HAS_OPTION_ARCH to detect such feature. Then
> TOOLCHAIN_HAS_XXX will be turned on automatically when the feature land.
>
> Suggested-by: Nathan Chancellor <nathan@kernel.org>
> Signed-off-by: Andy Chiu <andy.chiu@sifive.com>
> Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
> Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Heiko Stuebner <heiko.stuebner@vrull.eu>
Tested-by: Heiko Stuebner <heiko.stuebner@vrull.eu>
next prev parent reply other threads:[~2023-03-31 13:34 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
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 [this message]
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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