linux-kernel - Re: [PATCH] powerpc/64: Force inlining of prevent_user_access() and set

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Message-Id: <164708098863.827774.14061514441187973673.b4-ty@ellerman.id.au>
Date:   Sat, 12 Mar 2022 21:29:48 +1100
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Christophe Leroy <christophe.leroy@...roup.eu>,
        Michael Ellerman <mpe@...erman.id.au>,
        Paul Mackerras <paulus@...ba.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] powerpc/64: Force inlining of prevent_user_access() and set_kuap()

On Fri, 11 Feb 2022 15:16:51 +0100, Christophe Leroy wrote:
> A ppc64_defconfig build exhibits about 10 copied of
> prevent_user_access(). It also have one copy of set_kuap().
> 
> 	c000000000017340 <.prevent_user_access.constprop.0>:
> 	c00000000001a038:	4b ff d3 09 	bl      c000000000017340 <.prevent_user_access.constprop.0>
> 	c00000000001aabc:	4b ff c8 85 	bl      c000000000017340 <.prevent_user_access.constprop.0>
> 	c00000000001ab38:	4b ff c8 09 	bl      c000000000017340 <.prevent_user_access.constprop.0>
> 	c00000000001ade0:	4b ff c5 61 	bl      c000000000017340 <.prevent_user_access.constprop.0>
> 	c000000000039b90 <.prevent_user_access.constprop.0>:
> 	c00000000003ac08:	4b ff ef 89 	bl      c000000000039b90 <.prevent_user_access.constprop.0>
> 	c00000000003b9d0:	4b ff e1 c1 	bl      c000000000039b90 <.prevent_user_access.constprop.0>
> 	c00000000003ba54:	4b ff e1 3d 	bl      c000000000039b90 <.prevent_user_access.constprop.0>
> 	c00000000003bbfc:	4b ff df 95 	bl      c000000000039b90 <.prevent_user_access.constprop.0>
> 	c00000000015dde0 <.prevent_user_access.constprop.0>:
> 	c0000000001612c0:	4b ff cb 21 	bl      c00000000015dde0 <.prevent_user_access.constprop.0>
> 	c000000000161b54:	4b ff c2 8d 	bl      c00000000015dde0 <.prevent_user_access.constprop.0>
> 	c000000000188cf0 <.prevent_user_access.constprop.0>:
> 	c00000000018d658:	4b ff b6 99 	bl      c000000000188cf0 <.prevent_user_access.constprop.0>
> 	c00000000030fe20 <.prevent_user_access.constprop.0>:
> 	c0000000003123d4:	4b ff da 4d 	bl      c00000000030fe20 <.prevent_user_access.constprop.0>
> 	c000000000313970:	4b ff c4 b1 	bl      c00000000030fe20 <.prevent_user_access.constprop.0>
> 	c0000000005e6bd0 <.prevent_user_access.constprop.0>:
> 	c0000000005e7d8c:	4b ff ee 45 	bl      c0000000005e6bd0 <.prevent_user_access.constprop.0>
> 	c0000000007bcae0 <.prevent_user_access.constprop.0>:
> 	c0000000007bda10:	4b ff f0 d1 	bl      c0000000007bcae0 <.prevent_user_access.constprop.0>
> 	c0000000007bda54:	4b ff f0 8d 	bl      c0000000007bcae0 <.prevent_user_access.constprop.0>
> 	c0000000007bdd28:	4b ff ed b9 	bl      c0000000007bcae0 <.prevent_user_access.constprop.0>
> 	c0000000007c0390:	4b ff c7 51 	bl      c0000000007bcae0 <.prevent_user_access.constprop.0>
> 	c00000000094e4f0 <.prevent_user_access.constprop.0>:
> 	c000000000950e40:	4b ff d6 b1 	bl      c00000000094e4f0 <.prevent_user_access.constprop.0>
> 	c00000000097d2d0 <.prevent_user_access.constprop.0>:
> 	c0000000009813fc:	4b ff be d5 	bl      c00000000097d2d0 <.prevent_user_access.constprop.0>
> 	c000000000acd540 <.prevent_user_access.constprop.0>:
> 	c000000000ad1d60:	4b ff b7 e1 	bl      c000000000acd540 <.prevent_user_access.constprop.0>
> 	c000000000e5d680 <.prevent_user_access.constprop.0>:
> 	c000000000e64b60:	4b ff 8b 21 	bl      c000000000e5d680 <.prevent_user_access.constprop.0>
> 	c000000000e64b6c:	4b ff 8b 15 	bl      c000000000e5d680 <.prevent_user_access.constprop.0>
> 	c000000000e64c38:	4b ff 8a 49 	bl      c000000000e5d680 <.prevent_user_access.constprop.0>
> 
> [...]

Applied to powerpc/next.

[1/1] powerpc/64: Force inlining of prevent_user_access() and set_kuap()
      https://git.kernel.org/powerpc/c/792993919349fefba20f58ae4843c80e8b01f518

cheers