* [PATCH] arm64: Delete the zero_za macro
@ 2023-12-05 16:01 Zenghui Yu
2023-12-05 16:56 ` Mark Brown
2023-12-11 20:27 ` Will Deacon
0 siblings, 2 replies; 3+ messages in thread
From: Zenghui Yu @ 2023-12-05 16:01 UTC (permalink / raw)
To: linux-arm-kernel, linux-kernel
Cc: catalin.marinas, will, broonie, wanghaibin.wang, Zenghui Yu
zero_za was introduced in commit ca8a4ebcff44 ("arm64/sme: Manually encode
SME instructions") but doesn't appear to have any in kernel user. Drop it.
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
---
arch/arm64/include/asm/fpsimdmacros.h | 8 --------
1 file changed, 8 deletions(-)
diff --git a/arch/arm64/include/asm/fpsimdmacros.h b/arch/arm64/include/asm/fpsimdmacros.h
index cdf6a35e3994..cda81d009c9b 100644
--- a/arch/arm64/include/asm/fpsimdmacros.h
+++ b/arch/arm64/include/asm/fpsimdmacros.h
@@ -242,14 +242,6 @@
| (\nx << 5)
.endm
-/*
- * Zero the entire ZA array
- * ZERO ZA
- */
-.macro zero_za
- .inst 0xc00800ff
-.endm
-
.macro __for from:req, to:req
.if (\from) == (\to)
_for__body %\from
--
2.33.0
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] arm64: Delete the zero_za macro
2023-12-05 16:01 [PATCH] arm64: Delete the zero_za macro Zenghui Yu
@ 2023-12-05 16:56 ` Mark Brown
2023-12-11 20:27 ` Will Deacon
1 sibling, 0 replies; 3+ messages in thread
From: Mark Brown @ 2023-12-05 16:56 UTC (permalink / raw)
To: Zenghui Yu
Cc: linux-arm-kernel, linux-kernel, catalin.marinas, will, wanghaibin.wang
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On Wed, Dec 06, 2023 at 12:01:40AM +0800, Zenghui Yu wrote:
> zero_za was introduced in commit ca8a4ebcff44 ("arm64/sme: Manually encode
> SME instructions") but doesn't appear to have any in kernel user. Drop it.
>
> Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
You're right that this isn't used, though OTOH it's not exactly doing
any harm either and as a macro doesn't inflate the image or anything.
Acked-by: Mark Brown <broonie@kernel.org>
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^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] arm64: Delete the zero_za macro
2023-12-05 16:01 [PATCH] arm64: Delete the zero_za macro Zenghui Yu
2023-12-05 16:56 ` Mark Brown
@ 2023-12-11 20:27 ` Will Deacon
1 sibling, 0 replies; 3+ messages in thread
From: Will Deacon @ 2023-12-11 20:27 UTC (permalink / raw)
To: linux-arm-kernel, linux-kernel, Zenghui Yu
Cc: catalin.marinas, kernel-team, Will Deacon, broonie, wanghaibin.wang
On Wed, 6 Dec 2023 00:01:40 +0800, Zenghui Yu wrote:
> zero_za was introduced in commit ca8a4ebcff44 ("arm64/sme: Manually encode
> SME instructions") but doesn't appear to have any in kernel user. Drop it.
>
>
Applied to arm64 (for-next/misc), thanks!
[1/1] arm64: Delete the zero_za macro
https://git.kernel.org/arm64/c/86d1921c9d5a
Cheers,
--
Will
https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev
^ permalink raw reply [flat|nested] 3+ messages in thread
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2023-12-05 16:01 [PATCH] arm64: Delete the zero_za macro Zenghui Yu
2023-12-05 16:56 ` Mark Brown
2023-12-11 20:27 ` Will Deacon
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