All of lore.kernel.org
 help / color / mirror / Atom feed
* [PATCH] powerpc: Kconfig: disable CONFIG_COMPAT for clang < 12
@ 2021-05-18 20:58 ` Nick Desaulniers
  0 siblings, 0 replies; 6+ messages in thread
From: Nick Desaulniers @ 2021-05-18 20:58 UTC (permalink / raw)
  To: Michael Ellerman
  Cc: Segher Boessenkool, Fangrui Song, Christophe Leroy,
	Nick Desaulniers, Nathan Chancellor, Benjamin Herrenschmidt,
	Paul Mackerras, linuxppc-dev, linux-kernel, clang-built-linux

Until clang-12, clang would attempt to assemble 32b powerpc assembler in
64b emulation mode when using a 64b target triple with -m32, leading to
errors during the build of the compat VDSO. Simply disable all of
CONFIG_COMPAT; users should upgrade to the latest release of clang for
proper support.

Link: https://github.com/ClangBuiltLinux/linux/issues/1160
Link: https://github.com/llvm/llvm-project/commits/2288319733cd5f525bf7e24dece08bfcf9d0ff9e
Link: https://groups.google.com/g/clang-built-linux/c/ayNmi3HoNdY/m/XJAGj_G2AgAJ
Suggested-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
---
 arch/powerpc/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index ce3f59531b51..2a02784b7ef0 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -289,6 +289,7 @@ config PANIC_TIMEOUT
 config COMPAT
 	bool "Enable support for 32bit binaries"
 	depends on PPC64
+	depends on !CC_IS_CLANG || CLANG_VERSION >= 120000
 	default y if !CPU_LITTLE_ENDIAN
 	select ARCH_WANT_OLD_COMPAT_IPC
 	select COMPAT_OLD_SIGACTION
-- 
2.31.1.751.gd2f1c929bd-goog


^ permalink raw reply	[flat|nested] 6+ messages in thread

* [PATCH] powerpc: Kconfig: disable CONFIG_COMPAT for clang < 12
@ 2021-05-18 20:58 ` Nick Desaulniers
  0 siblings, 0 replies; 6+ messages in thread
From: Nick Desaulniers @ 2021-05-18 20:58 UTC (permalink / raw)
  To: Michael Ellerman
  Cc: Fangrui Song, Nick Desaulniers, linux-kernel, Nathan Chancellor,
	clang-built-linux, Paul Mackerras, linuxppc-dev

Until clang-12, clang would attempt to assemble 32b powerpc assembler in
64b emulation mode when using a 64b target triple with -m32, leading to
errors during the build of the compat VDSO. Simply disable all of
CONFIG_COMPAT; users should upgrade to the latest release of clang for
proper support.

Link: https://github.com/ClangBuiltLinux/linux/issues/1160
Link: https://github.com/llvm/llvm-project/commits/2288319733cd5f525bf7e24dece08bfcf9d0ff9e
Link: https://groups.google.com/g/clang-built-linux/c/ayNmi3HoNdY/m/XJAGj_G2AgAJ
Suggested-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
---
 arch/powerpc/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index ce3f59531b51..2a02784b7ef0 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -289,6 +289,7 @@ config PANIC_TIMEOUT
 config COMPAT
 	bool "Enable support for 32bit binaries"
 	depends on PPC64
+	depends on !CC_IS_CLANG || CLANG_VERSION >= 120000
 	default y if !CPU_LITTLE_ENDIAN
 	select ARCH_WANT_OLD_COMPAT_IPC
 	select COMPAT_OLD_SIGACTION
-- 
2.31.1.751.gd2f1c929bd-goog


^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [PATCH] powerpc: Kconfig: disable CONFIG_COMPAT for clang < 12
  2021-05-18 20:58 ` Nick Desaulniers
@ 2021-05-18 21:12   ` Nathan Chancellor
  -1 siblings, 0 replies; 6+ messages in thread
From: Nathan Chancellor @ 2021-05-18 21:12 UTC (permalink / raw)
  To: Nick Desaulniers, Michael Ellerman
  Cc: Segher Boessenkool, Fangrui Song, Christophe Leroy,
	Benjamin Herrenschmidt, Paul Mackerras, linuxppc-dev,
	linux-kernel, clang-built-linux

On 5/18/2021 1:58 PM, Nick Desaulniers wrote:
> Until clang-12, clang would attempt to assemble 32b powerpc assembler in
> 64b emulation mode when using a 64b target triple with -m32, leading to
> errors during the build of the compat VDSO. Simply disable all of
> CONFIG_COMPAT; users should upgrade to the latest release of clang for
> proper support.
> 
> Link: https://github.com/ClangBuiltLinux/linux/issues/1160
> Link: https://github.com/llvm/llvm-project/commits/2288319733cd5f525bf7e24dece08bfcf9d0ff9e
> Link: https://groups.google.com/g/clang-built-linux/c/ayNmi3HoNdY/m/XJAGj_G2AgAJ
> Suggested-by: Nathan Chancellor <nathan@kernel.org>
> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>

Reviewed-by: Nathan Chancellor <nathan@kernel.org>

> ---
>   arch/powerpc/Kconfig | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> index ce3f59531b51..2a02784b7ef0 100644
> --- a/arch/powerpc/Kconfig
> +++ b/arch/powerpc/Kconfig
> @@ -289,6 +289,7 @@ config PANIC_TIMEOUT
>   config COMPAT
>   	bool "Enable support for 32bit binaries"
>   	depends on PPC64
> +	depends on !CC_IS_CLANG || CLANG_VERSION >= 120000
>   	default y if !CPU_LITTLE_ENDIAN
>   	select ARCH_WANT_OLD_COMPAT_IPC
>   	select COMPAT_OLD_SIGACTION
> 


^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [PATCH] powerpc: Kconfig: disable CONFIG_COMPAT for clang < 12
@ 2021-05-18 21:12   ` Nathan Chancellor
  0 siblings, 0 replies; 6+ messages in thread
From: Nathan Chancellor @ 2021-05-18 21:12 UTC (permalink / raw)
  To: Nick Desaulniers, Michael Ellerman
  Cc: Fangrui Song, linux-kernel, clang-built-linux, Paul Mackerras,
	linuxppc-dev

On 5/18/2021 1:58 PM, Nick Desaulniers wrote:
> Until clang-12, clang would attempt to assemble 32b powerpc assembler in
> 64b emulation mode when using a 64b target triple with -m32, leading to
> errors during the build of the compat VDSO. Simply disable all of
> CONFIG_COMPAT; users should upgrade to the latest release of clang for
> proper support.
> 
> Link: https://github.com/ClangBuiltLinux/linux/issues/1160
> Link: https://github.com/llvm/llvm-project/commits/2288319733cd5f525bf7e24dece08bfcf9d0ff9e
> Link: https://groups.google.com/g/clang-built-linux/c/ayNmi3HoNdY/m/XJAGj_G2AgAJ
> Suggested-by: Nathan Chancellor <nathan@kernel.org>
> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>

Reviewed-by: Nathan Chancellor <nathan@kernel.org>

> ---
>   arch/powerpc/Kconfig | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> index ce3f59531b51..2a02784b7ef0 100644
> --- a/arch/powerpc/Kconfig
> +++ b/arch/powerpc/Kconfig
> @@ -289,6 +289,7 @@ config PANIC_TIMEOUT
>   config COMPAT
>   	bool "Enable support for 32bit binaries"
>   	depends on PPC64
> +	depends on !CC_IS_CLANG || CLANG_VERSION >= 120000
>   	default y if !CPU_LITTLE_ENDIAN
>   	select ARCH_WANT_OLD_COMPAT_IPC
>   	select COMPAT_OLD_SIGACTION
> 


^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [PATCH] powerpc: Kconfig: disable CONFIG_COMPAT for clang < 12
  2021-05-18 20:58 ` Nick Desaulniers
@ 2021-06-06 12:08   ` Michael Ellerman
  -1 siblings, 0 replies; 6+ messages in thread
From: Michael Ellerman @ 2021-06-06 12:08 UTC (permalink / raw)
  To: Nick Desaulniers, Michael Ellerman
  Cc: Fangrui Song, linux-kernel, Nathan Chancellor, linuxppc-dev,
	clang-built-linux, Paul Mackerras

On Tue, 18 May 2021 13:58:57 -0700, Nick Desaulniers wrote:
> Until clang-12, clang would attempt to assemble 32b powerpc assembler in
> 64b emulation mode when using a 64b target triple with -m32, leading to
> errors during the build of the compat VDSO. Simply disable all of
> CONFIG_COMPAT; users should upgrade to the latest release of clang for
> proper support.

Applied to powerpc/next.

[1/1] powerpc: Kconfig: disable CONFIG_COMPAT for clang < 12
      https://git.kernel.org/powerpc/c/6fcb574125e673f33ff058caa54b4e65629f3a08

cheers

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [PATCH] powerpc: Kconfig: disable CONFIG_COMPAT for clang < 12
@ 2021-06-06 12:08   ` Michael Ellerman
  0 siblings, 0 replies; 6+ messages in thread
From: Michael Ellerman @ 2021-06-06 12:08 UTC (permalink / raw)
  To: Nick Desaulniers, Michael Ellerman
  Cc: Fangrui Song, linux-kernel, Nathan Chancellor, clang-built-linux,
	Paul Mackerras, linuxppc-dev

On Tue, 18 May 2021 13:58:57 -0700, Nick Desaulniers wrote:
> Until clang-12, clang would attempt to assemble 32b powerpc assembler in
> 64b emulation mode when using a 64b target triple with -m32, leading to
> errors during the build of the compat VDSO. Simply disable all of
> CONFIG_COMPAT; users should upgrade to the latest release of clang for
> proper support.

Applied to powerpc/next.

[1/1] powerpc: Kconfig: disable CONFIG_COMPAT for clang < 12
      https://git.kernel.org/powerpc/c/6fcb574125e673f33ff058caa54b4e65629f3a08

cheers

^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2021-06-06 12:17 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-05-18 20:58 [PATCH] powerpc: Kconfig: disable CONFIG_COMPAT for clang < 12 Nick Desaulniers
2021-05-18 20:58 ` Nick Desaulniers
2021-05-18 21:12 ` Nathan Chancellor
2021-05-18 21:12   ` Nathan Chancellor
2021-06-06 12:08 ` Michael Ellerman
2021-06-06 12:08   ` Michael Ellerman

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.