Patch "powerpc/boot: Don't always pass -mcpu=powerpc when building 32-bit uImage" has been added to the 6.1-stable tree

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This is a note to let you know that I've just added the patch titled

    powerpc/boot: Don't always pass -mcpu=powerpc when building 32-bit uImage

to the 6.1-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     powerpc-boot-don-t-always-pass-mcpu-powerpc-when-building-32-bit-uimage.patch
and it can be found in the queue-6.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From ff7c76f66d8bad4e694c264c789249e1d3a8205d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@xxxxxxxxxx>
Date: Wed, 25 Jan 2023 08:39:00 +0100
Subject: powerpc/boot: Don't always pass -mcpu=powerpc when building 32-bit uImage
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: Pali Rohár <pali@xxxxxxxxxx>

commit ff7c76f66d8bad4e694c264c789249e1d3a8205d upstream.

When CONFIG_TARGET_CPU is specified then pass its value to the compiler
-mcpu option. This fixes following build error when building kernel with
powerpc e500 SPE capable cross compilers:

    BOOTAS  arch/powerpc/boot/crt0.o
  powerpc-linux-gnuspe-gcc: error: unrecognized argument in option ‘-mcpu=powerpc’
  powerpc-linux-gnuspe-gcc: note: valid arguments to ‘-mcpu=’ are: 8540 8548 native
  make[1]: *** [arch/powerpc/boot/Makefile:231: arch/powerpc/boot/crt0.o] Error 1

Similar change was already introduced for the main powerpc Makefile in
commit 446cda1b21d9 ("powerpc/32: Don't always pass -mcpu=powerpc to the
compiler").

Fixes: 40a75584e526 ("powerpc/boot: Build wrapper for an appropriate CPU")
Cc: stable@xxxxxxxxxxxxxxx # v5.19+
Signed-off-by: Pali Rohár <pali@xxxxxxxxxx>
Signed-off-by: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/2ae3ae5887babfdacc34435bff0944b3f336100a.1674632329.git.christophe.leroy@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 arch/powerpc/boot/Makefile | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile
index d32d95aea5d6..295f76df13b5 100644
--- a/arch/powerpc/boot/Makefile
+++ b/arch/powerpc/boot/Makefile
@@ -39,13 +39,19 @@ BOOTCFLAGS    := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
 		 $(LINUXINCLUDE)
 
 ifdef CONFIG_PPC64_BOOT_WRAPPER
-ifdef CONFIG_CPU_LITTLE_ENDIAN
-BOOTCFLAGS	+= -m64 -mcpu=powerpc64le
+BOOTCFLAGS	+= -m64
 else
-BOOTCFLAGS	+= -m64 -mcpu=powerpc64
+BOOTCFLAGS	+= -m32
 endif
+
+ifdef CONFIG_TARGET_CPU_BOOL
+BOOTCFLAGS	+= -mcpu=$(CONFIG_TARGET_CPU)
+else ifdef CONFIG_PPC64_BOOT_WRAPPER
+ifdef CONFIG_CPU_LITTLE_ENDIAN
+BOOTCFLAGS	+= -mcpu=powerpc64le
 else
-BOOTCFLAGS	+= -m32 -mcpu=powerpc
+BOOTCFLAGS	+= -mcpu=powerpc64
+endif
 endif
 
 BOOTCFLAGS	+= -isystem $(shell $(BOOTCC) -print-file-name=include)
-- 
2.39.2



Patches currently in stable-queue which might be from pali@xxxxxxxxxx are

queue-6.1/powerpc-boot-don-t-always-pass-mcpu-powerpc-when-building-32-bit-uimage.patch



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