This is a note to let you know that I've just added the patch titled mips: BCM63XX: ensure that CPU_SUPPORTS_32BIT_KERNEL is set to the 4.9-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: mips-bcm63xx-ensure-that-cpu_supports_32bit_kernel-i.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit f4b25078b979e5fd9d898d8f634e9c7d17297311 Author: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Date: Sat Nov 6 08:49:11 2021 -0700 mips: BCM63XX: ensure that CPU_SUPPORTS_32BIT_KERNEL is set [ Upstream commit 5eeaafc8d69373c095e461bdb39e5c9b62228ac5 ] Several header files need info on CONFIG_32BIT or CONFIG_64BIT, but kconfig symbol BCM63XX does not provide that info. This leads to many build errors, e.g.: arch/mips/include/asm/page.h:196:13: error: use of undeclared identifier 'CAC_BASE' return x - PAGE_OFFSET + PHYS_OFFSET; arch/mips/include/asm/mach-generic/spaces.h:91:23: note: expanded from macro 'PAGE_OFFSET' #define PAGE_OFFSET (CAC_BASE + PHYS_OFFSET) arch/mips/include/asm/io.h:134:28: error: use of undeclared identifier 'CAC_BASE' return (void *)(address + PAGE_OFFSET - PHYS_OFFSET); arch/mips/include/asm/mach-generic/spaces.h:91:23: note: expanded from macro 'PAGE_OFFSET' #define PAGE_OFFSET (CAC_BASE + PHYS_OFFSET) arch/mips/include/asm/uaccess.h:82:10: error: use of undeclared identifier '__UA_LIMIT' return (__UA_LIMIT & (addr | (addr + size) | __ua_size(size))) == 0; Selecting the SYS_HAS_CPU_BMIPS* symbols causes SYS_HAS_CPU_BMIPS to be set, which then selects CPU_SUPPORT_32BIT_KERNEL, which causes CONFIG_32BIT to be set. (a bit more indirect than v1 [RFC].) Fixes: e7300d04bd08 ("MIPS: BCM63xx: Add support for the Broadcom BCM63xx family of SOCs.") Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Reported-by: kernel test robot <lkp@xxxxxxxxx> Cc: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx> Cc: Florian Fainelli <f.fainelli@xxxxxxxxx> Cc: bcm-kernel-feedback-list@xxxxxxxxxxxx Cc: linux-mips@xxxxxxxxxxxxxxx Cc: Paul Burton <paulburton@xxxxxxxxxx> Cc: Maxime Bizon <mbizon@xxxxxxxxxx> Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx> Suggested-by: Florian Fainelli <f.fainelli@xxxxxxxxx> Acked-by: Florian Fainelli <f.fainelli@xxxxxxxxx> Signed-off-by: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 3ab2a95673680..9708c319a7444 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -267,6 +267,9 @@ config BCM63XX select SYS_SUPPORTS_32BIT_KERNEL select SYS_SUPPORTS_BIG_ENDIAN select SYS_HAS_EARLY_PRINTK + select SYS_HAS_CPU_BMIPS32_3300 + select SYS_HAS_CPU_BMIPS4350 + select SYS_HAS_CPU_BMIPS4380 select SWAP_IO_SPACE select GPIOLIB select HAVE_CLK