From 3aa8e04ddf7ca6b038b4283e7a1ee31dd72ecea4 Mon Sep 17 00:00:00 2001 From: Yury Norov Date: Wed, 2 Dec 2015 14:00:10 +0000 Subject: [PATCH] arm64: fix COMPAT_SHMLBA definition for large pages [ Upstream commit b9b7aebb42d1b1392f3111de61136bb6cf3aae3f ] ARM glibc uses (4 * __getpagesize()) for SHMLBA, which is correct for 4KB pages and works fine for 64KB pages, but the kernel uses a hardcoded 16KB that is too small for 64KB page based kernels. This changes the definition to what user space sees when using 64KB pages. Acked-by: Arnd Bergmann Signed-off-by: Yury Norov Signed-off-by: Will Deacon Signed-off-by: Sasha Levin --- arch/arm64/include/asm/shmparam.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/include/asm/shmparam.h b/arch/arm64/include/asm/shmparam.h index 4df608a8459e..e368a55ebd22 100644 --- a/arch/arm64/include/asm/shmparam.h +++ b/arch/arm64/include/asm/shmparam.h @@ -21,7 +21,7 @@ * alignment value. Since we don't have aliasing D-caches, the rest of * the time we can safely use PAGE_SIZE. */ -#define COMPAT_SHMLBA 0x4000 +#define COMPAT_SHMLBA (4 * PAGE_SIZE) #include