Message ID | 20220921214439.1491510-2-stillson@rivosinc.com (mailing list archive) |
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State | New |
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Wed, 21 Sep 2022 14:45:50 -0700 (PDT) From: Chris Stillson <stillson@rivosinc.com> To: Cc: Guo Ren <ren_guo@c-sky.com>, Guo Ren <guoren@linux.alibaba.com>, Anup Patel <anup@brainfault.org>, Greentime Hu <greentime.hu@sifive.com>, Palmer Dabbelt <palmer@rivosinc.com>, Paul Walmsley <paul.walmsley@sifive.com>, Palmer Dabbelt <palmer@dabbelt.com>, Albert Ou <aou@eecs.berkeley.edu>, Eric Biederman <ebiederm@xmission.com>, Kees Cook <keescook@chromium.org>, Atish Patra <atishp@atishpatra.org>, Oleg Nesterov <oleg@redhat.com>, Heinrich Schuchardt <heinrich.schuchardt@canonical.com>, Guo Ren <guoren@kernel.org>, Conor Dooley <conor.dooley@microchip.com>, Mayuresh Chitale <mchitale@ventanamicro.com>, Chris Stillson <stillson@rivosinc.com>, Paolo Bonzini <pbonzini@redhat.com>, Qinglin Pan <panqinglin2020@iscas.ac.cn>, Alexandre Ghiti <alexandre.ghiti@canonical.com>, Arnd Bergmann <arnd@arndb.de>, Vincent Chen <vincent.chen@sifive.com>, Heiko Stuebner <heiko@sntech.de>, Dao Lu <daolu@rivosinc.com>, Jisheng Zhang <jszhang@kernel.org>, Geert Uytterhoeven <geert@linux-m68k.org>, Sunil V L <sunilvl@ventanamicro.com>, Nick Knight <nick.knight@sifive.com>, Han-Kuan Chen <hankuan.chen@sifive.com>, Changbin Du <changbin.du@intel.com>, Li Zhengyu <lizhengyu3@huawei.com>, Alexander Graf <graf@amazon.com>, Ard Biesheuvel <ardb@kernel.org>, Tsukasa OI <research_trasio@irq.a4lg.com>, Yury Norov <yury.norov@gmail.com>, Nicolas Saenz Julienne <nsaenzju@redhat.com>, Frederic Weisbecker <frederic@kernel.org>, Mark Rutland <mark.rutland@arm.com>, Myrtle Shah <gatecat@ds0.me>, Vitaly Wool <vitaly.wool@konsulko.com>, Mathieu Desnoyers <mathieu.desnoyers@efficios.com>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, Mark Brown <broonie@kernel.org>, Heiko Carstens <hca@linux.ibm.com>, Alexey Dobriyan <adobriyan@gmail.com>, Huacai Chen <chenhuacai@kernel.org>, Christian Brauner <brauner@kernel.org>, Eugene Syromiatnikov <esyr@redhat.com>, Peter Collingbourne <pcc@google.com>, Colin Cross <ccross@google.com>, Andrew Morton <akpm@linux-foundation.org>, Barret Rhoden <brho@google.com>, Suren Baghdasaryan <surenb@google.com>, Davidlohr Bueso <dave@stgolabs.net>, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org Subject: [PATCH v12 02/17] riscv: Extending cpufeature.c to detect V-extension Date: Wed, 21 Sep 2022 14:43:44 -0700 Message-Id: <20220921214439.1491510-2-stillson@rivosinc.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220921214439.1491510-1-stillson@rivosinc.com> References: <20220921214439.1491510-1-stillson@rivosinc.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit ARC-Seal: i=1; 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[v12,01/17] riscv: Rename __switch_to_aux -> fpu
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diff --git a/arch/riscv/include/uapi/asm/hwcap.h b/arch/riscv/include/uapi/asm/hwcap.h index 46dc3f5ee99f..c52bb7bbbabe 100644 --- a/arch/riscv/include/uapi/asm/hwcap.h +++ b/arch/riscv/include/uapi/asm/hwcap.h @@ -21,5 +21,6 @@ #define COMPAT_HWCAP_ISA_F (1 << ('F' - 'A')) #define COMPAT_HWCAP_ISA_D (1 << ('D' - 'A')) #define COMPAT_HWCAP_ISA_C (1 << ('C' - 'A')) +#define COMPAT_HWCAP_ISA_V (1 << ('V' - 'A')) #endif /* _UAPI_ASM_RISCV_HWCAP_H */ diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c index 553d755483ed..8d4448c2d4f4 100644 --- a/arch/riscv/kernel/cpufeature.c +++ b/arch/riscv/kernel/cpufeature.c @@ -83,6 +83,7 @@ void __init riscv_fill_hwcap(void) isa2hwcap['f'] = isa2hwcap['F'] = COMPAT_HWCAP_ISA_F; isa2hwcap['d'] = isa2hwcap['D'] = COMPAT_HWCAP_ISA_D; isa2hwcap['c'] = isa2hwcap['C'] = COMPAT_HWCAP_ISA_C; + isa2hwcap['v'] = isa2hwcap['V'] = COMPAT_HWCAP_ISA_V; elf_hwcap = 0;