Re: [PATCH] powerpc/uaccess: Check CONFIG_PPC_E500
From: "Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
Date: 2026-06-24 08:41:08
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Hi, Le 24/06/2026 à 10:15, Pengpeng Hou a écrit :
The powerpc CPU Kconfig defines `PPC_E500`. There is no generated `CONFIG_E500` symbol for `IS_ENABLED()` to test here. `mask_user_address()` therefore checks an impossible symbol before choosing the E500-specific masking helper. Use `CONFIG_PPC_E500`, which matches the actual Kconfig provider for this CPU family.
There is already a fix in the queue waiting to be applied: https://lore.kernel.org/all/20260615233729.29386-1-enelsonmoore@gmail.com/ (local)
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Signed-off-by: Pengpeng Hou <redacted> --- arch/powerpc/include/asm/uaccess.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h --- a/arch/powerpc/include/asm/uaccess.h +++ b/arch/powerpc/include/asm/uaccess.h@@ -537,7 +537,7 @@ static __always_inline unsigned long mask_user_address(const void __user *ptr) if (IS_ENABLED(CONFIG_PPC64)) return mask_user_address_simple(ptr); - if (IS_ENABLED(CONFIG_E500)) + if (IS_ENABLED(CONFIG_PPC_E500)) return mask_user_address_isel(ptr); if (TASK_SIZE <= UL(SZ_2G) && border >= UL(SZ_2G)) return mask_user_address_simple(ptr);