From: Ard Biesheuvel <ard.biesheuvel@linaro.org> To: linux-crypto@vger.kernel.org Cc: Mark Rutland <mark.rutland@arm.com>, herbert@gondor.apana.org.au, Ard Biesheuvel <ard.biesheuvel@linaro.org>, Peter Zijlstra <peterz@infradead.org>, Catalin Marinas <catalin.marinas@arm.com>, Sebastian Andrzej Siewior <bigeasy@linutronix.de>, Will Deacon <will.deacon@arm.com>, Russell King - ARM Linux <linux@armlinux.org.uk>, Steven Rostedt <rostedt@goodmis.org>, Thomas Gleixner <tglx@linutronix.de>, Dave Martin <Dave.Martin@arm.com>, linux-arm-kernel@lists.infradead.org, linux-rt-users@vger.kernel.org Subject: [PATCH v5 23/23] DO NOT MERGE Date: Sat, 10 Mar 2018 15:22:08 +0000 [thread overview] Message-ID: <20180310152208.10369-24-ard.biesheuvel@linaro.org> (raw) In-Reply-To: <20180310152208.10369-1-ard.biesheuvel@linaro.org> Test code to force a kernel_neon_end+begin sequence at every yield point, and wipe the entire NEON state before resuming the algorithm. --- arch/arm64/include/asm/assembler.h | 33 ++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/arch/arm64/include/asm/assembler.h b/arch/arm64/include/asm/assembler.h index 61168cbe9781..b471b0bbdfe6 100644 --- a/arch/arm64/include/asm/assembler.h +++ b/arch/arm64/include/asm/assembler.h @@ -678,6 +678,7 @@ alternative_else_nop_endif cmp w1, #PREEMPT_DISABLE_OFFSET csel x0, x0, xzr, eq tbnz x0, #TIF_NEED_RESCHED, .Lyield_\@ // needs rescheduling? + b .Lyield_\@ #endif /* fall through to endif_yield_neon */ .subsection 1 @@ -687,6 +688,38 @@ alternative_else_nop_endif .macro do_cond_yield_neon bl kernel_neon_end bl kernel_neon_begin + movi v0.16b, #0x55 + movi v1.16b, #0x55 + movi v2.16b, #0x55 + movi v3.16b, #0x55 + movi v4.16b, #0x55 + movi v5.16b, #0x55 + movi v6.16b, #0x55 + movi v7.16b, #0x55 + movi v8.16b, #0x55 + movi v9.16b, #0x55 + movi v10.16b, #0x55 + movi v11.16b, #0x55 + movi v12.16b, #0x55 + movi v13.16b, #0x55 + movi v14.16b, #0x55 + movi v15.16b, #0x55 + movi v16.16b, #0x55 + movi v17.16b, #0x55 + movi v18.16b, #0x55 + movi v19.16b, #0x55 + movi v20.16b, #0x55 + movi v21.16b, #0x55 + movi v22.16b, #0x55 + movi v23.16b, #0x55 + movi v24.16b, #0x55 + movi v25.16b, #0x55 + movi v26.16b, #0x55 + movi v27.16b, #0x55 + movi v28.16b, #0x55 + movi v29.16b, #0x55 + movi v30.16b, #0x55 + movi v31.16b, #0x55 .endm .macro endif_yield_neon, lbl -- 2.15.1
WARNING: multiple messages have this Message-ID (diff)
From: ard.biesheuvel@linaro.org (Ard Biesheuvel) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v5 23/23] DO NOT MERGE Date: Sat, 10 Mar 2018 15:22:08 +0000 [thread overview] Message-ID: <20180310152208.10369-24-ard.biesheuvel@linaro.org> (raw) In-Reply-To: <20180310152208.10369-1-ard.biesheuvel@linaro.org> Test code to force a kernel_neon_end+begin sequence at every yield point, and wipe the entire NEON state before resuming the algorithm. --- arch/arm64/include/asm/assembler.h | 33 ++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/arch/arm64/include/asm/assembler.h b/arch/arm64/include/asm/assembler.h index 61168cbe9781..b471b0bbdfe6 100644 --- a/arch/arm64/include/asm/assembler.h +++ b/arch/arm64/include/asm/assembler.h @@ -678,6 +678,7 @@ alternative_else_nop_endif cmp w1, #PREEMPT_DISABLE_OFFSET csel x0, x0, xzr, eq tbnz x0, #TIF_NEED_RESCHED, .Lyield_\@ // needs rescheduling? + b .Lyield_\@ #endif /* fall through to endif_yield_neon */ .subsection 1 @@ -687,6 +688,38 @@ alternative_else_nop_endif .macro do_cond_yield_neon bl kernel_neon_end bl kernel_neon_begin + movi v0.16b, #0x55 + movi v1.16b, #0x55 + movi v2.16b, #0x55 + movi v3.16b, #0x55 + movi v4.16b, #0x55 + movi v5.16b, #0x55 + movi v6.16b, #0x55 + movi v7.16b, #0x55 + movi v8.16b, #0x55 + movi v9.16b, #0x55 + movi v10.16b, #0x55 + movi v11.16b, #0x55 + movi v12.16b, #0x55 + movi v13.16b, #0x55 + movi v14.16b, #0x55 + movi v15.16b, #0x55 + movi v16.16b, #0x55 + movi v17.16b, #0x55 + movi v18.16b, #0x55 + movi v19.16b, #0x55 + movi v20.16b, #0x55 + movi v21.16b, #0x55 + movi v22.16b, #0x55 + movi v23.16b, #0x55 + movi v24.16b, #0x55 + movi v25.16b, #0x55 + movi v26.16b, #0x55 + movi v27.16b, #0x55 + movi v28.16b, #0x55 + movi v29.16b, #0x55 + movi v30.16b, #0x55 + movi v31.16b, #0x55 .endm .macro endif_yield_neon, lbl -- 2.15.1
next prev parent reply other threads:[~2018-03-10 15:22 UTC|newest] Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-03-10 15:21 [PATCH v5 00/23] crypto: arm64 - play nice with CONFIG_PREEMPT Ard Biesheuvel 2018-03-10 15:21 ` Ard Biesheuvel 2018-03-10 15:21 ` [PATCH v5 01/23] crypto: testmgr - add a new test case for CRC-T10DIF Ard Biesheuvel 2018-03-10 15:21 ` Ard Biesheuvel 2018-03-10 15:21 ` [PATCH v5 02/23] crypto: arm64/aes-ce-ccm - move kernel mode neon en/disable into loop Ard Biesheuvel 2018-03-10 15:21 ` Ard Biesheuvel 2018-03-10 15:21 ` [PATCH v5 03/23] crypto: arm64/aes-blk " Ard Biesheuvel 2018-03-10 15:21 ` Ard Biesheuvel 2018-03-10 15:21 ` [PATCH v5 04/23] crypto: arm64/aes-bs " Ard Biesheuvel 2018-03-10 15:21 ` Ard Biesheuvel 2018-03-10 15:21 ` [PATCH v5 05/23] crypto: arm64/chacha20 " Ard Biesheuvel 2018-03-10 15:21 ` Ard Biesheuvel 2018-03-10 15:21 ` [PATCH v5 06/23] crypto: arm64/aes-blk - remove configurable interleave Ard Biesheuvel 2018-03-10 15:21 ` Ard Biesheuvel 2018-03-10 15:21 ` [PATCH v5 07/23] crypto: arm64/aes-blk - add 4 way interleave to CBC encrypt path Ard Biesheuvel 2018-03-10 15:21 ` Ard Biesheuvel 2018-03-10 15:21 ` [PATCH v5 08/23] crypto: arm64/aes-blk - add 4 way interleave to CBC-MAC " Ard Biesheuvel 2018-03-10 15:21 ` Ard Biesheuvel 2018-03-10 15:21 ` [PATCH v5 09/23] crypto: arm64/sha256-neon - play nice with CONFIG_PREEMPT kernels Ard Biesheuvel 2018-03-10 15:21 ` Ard Biesheuvel 2018-03-10 15:21 ` [PATCH v5 10/23] arm64: assembler: add utility macros to push/pop stack frames Ard Biesheuvel 2018-03-10 15:21 ` Ard Biesheuvel 2018-03-10 15:21 ` [PATCH v5 11/23] arm64: assembler: add macros to conditionally yield the NEON under PREEMPT Ard Biesheuvel 2018-03-10 15:21 ` Ard Biesheuvel 2018-03-10 15:21 ` [PATCH v5 12/23] crypto: arm64/sha1-ce - yield NEON after every block of input Ard Biesheuvel 2018-03-10 15:21 ` Ard Biesheuvel 2018-03-10 15:21 ` [PATCH v5 13/23] crypto: arm64/sha2-ce " Ard Biesheuvel 2018-03-10 15:21 ` Ard Biesheuvel 2018-03-10 15:21 ` [PATCH v5 14/23] crypto: arm64/aes-ccm " Ard Biesheuvel 2018-03-10 15:21 ` Ard Biesheuvel 2018-03-10 15:22 ` [PATCH v5 15/23] crypto: arm64/aes-blk " Ard Biesheuvel 2018-03-10 15:22 ` Ard Biesheuvel 2018-03-10 15:22 ` [PATCH v5 16/23] crypto: arm64/aes-bs " Ard Biesheuvel 2018-03-10 15:22 ` Ard Biesheuvel 2018-03-10 15:22 ` [PATCH v5 17/23] crypto: arm64/aes-ghash " Ard Biesheuvel 2018-03-10 15:22 ` Ard Biesheuvel 2018-03-10 15:22 ` [PATCH v5 18/23] crypto: arm64/crc32-ce " Ard Biesheuvel 2018-03-10 15:22 ` Ard Biesheuvel 2018-03-10 15:22 ` [PATCH v5 19/23] crypto: arm64/crct10dif-ce " Ard Biesheuvel 2018-03-10 15:22 ` Ard Biesheuvel 2018-03-10 15:22 ` [PATCH v5 20/23] crypto: arm64/sha3-ce " Ard Biesheuvel 2018-03-10 15:22 ` Ard Biesheuvel 2018-03-10 15:22 ` [PATCH v5 21/23] crypto: arm64/sha512-ce " Ard Biesheuvel 2018-03-10 15:22 ` Ard Biesheuvel 2018-03-10 15:22 ` [PATCH v5 22/23] crypto: arm64/sm3-ce " Ard Biesheuvel 2018-03-10 15:22 ` Ard Biesheuvel 2018-03-10 15:22 ` Ard Biesheuvel [this message] 2018-03-10 15:22 ` [PATCH v5 23/23] DO NOT MERGE Ard Biesheuvel 2018-03-11 5:16 ` [PATCH v5 00/23] crypto: arm64 - play nice with CONFIG_PREEMPT Vakul Garg 2018-03-11 5:16 ` Vakul Garg 2018-03-11 8:55 ` Ard Biesheuvel 2018-03-11 8:55 ` Ard Biesheuvel 2018-03-16 15:57 ` Herbert Xu 2018-03-16 15:57 ` Herbert Xu 2018-03-19 15:31 ` Ard Biesheuvel 2018-03-19 15:31 ` Ard Biesheuvel 2018-03-19 23:36 ` Herbert Xu 2018-03-19 23:36 ` Herbert Xu
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