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
next prev parent reply other threads:[~2018-03-10 15:22 UTC|newest]
Thread overview: 29+ 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 ` [PATCH v5 01/23] crypto: testmgr - add a new test case for CRC-T10DIF 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 ` [PATCH v5 03/23] crypto: arm64/aes-blk " Ard Biesheuvel
2018-03-10 15:21 ` [PATCH v5 04/23] crypto: arm64/aes-bs " Ard Biesheuvel
2018-03-10 15:21 ` [PATCH v5 05/23] crypto: arm64/chacha20 " 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 ` [PATCH v5 07/23] crypto: arm64/aes-blk - add 4 way interleave to CBC encrypt path 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 ` [PATCH v5 09/23] crypto: arm64/sha256-neon - play nice with CONFIG_PREEMPT kernels 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 ` [PATCH v5 11/23] arm64: assembler: add macros to conditionally yield the NEON under PREEMPT 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 ` [PATCH v5 13/23] crypto: arm64/sha2-ce " Ard Biesheuvel
2018-03-10 15:21 ` [PATCH v5 14/23] crypto: arm64/aes-ccm " Ard Biesheuvel
2018-03-10 15:22 ` [PATCH v5 15/23] crypto: arm64/aes-blk " Ard Biesheuvel
2018-03-10 15:22 ` [PATCH v5 16/23] crypto: arm64/aes-bs " Ard Biesheuvel
2018-03-10 15:22 ` [PATCH v5 17/23] crypto: arm64/aes-ghash " Ard Biesheuvel
2018-03-10 15:22 ` [PATCH v5 18/23] crypto: arm64/crc32-ce " Ard Biesheuvel
2018-03-10 15:22 ` [PATCH v5 19/23] crypto: arm64/crct10dif-ce " Ard Biesheuvel
2018-03-10 15:22 ` [PATCH v5 20/23] crypto: arm64/sha3-ce " Ard Biesheuvel
2018-03-10 15:22 ` [PATCH v5 21/23] crypto: arm64/sha512-ce " Ard Biesheuvel
2018-03-10 15:22 ` [PATCH v5 22/23] crypto: arm64/sm3-ce " Ard Biesheuvel
2018-03-10 15:22 ` Ard Biesheuvel [this message]
2018-03-11 5:16 ` [PATCH v5 00/23] crypto: arm64 - play nice with CONFIG_PREEMPT Vakul Garg
2018-03-11 8:55 ` Ard Biesheuvel
2018-03-16 15:57 ` Herbert Xu
2018-03-19 15:31 ` Ard Biesheuvel
2018-03-19 23:36 ` Herbert Xu
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