diff options
| author | Ingo Molnar <mingo@kernel.org> | 2015-05-08 13:33:33 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-05-08 13:33:33 +0200 |
| commit | 7ae383be81781c5e1347f71c3eb0d53ce5188200 (patch) | |
| tree | d2dfedb78cf4ee2bc9cc460af3be106b08e01050 /arch/arm64/kernel/entry32.S | |
| parent | x86: Force inlining of atomic ops (diff) | |
| parent | Merge tag 'pm+acpi-4.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/... (diff) | |
| download | linux-7ae383be81781c5e1347f71c3eb0d53ce5188200.tar.xz linux-7ae383be81781c5e1347f71c3eb0d53ce5188200.zip | |
Merge branch 'linus' into x86/asm, before applying dependent patch
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arm64/kernel/entry32.S')
| -rw-r--r-- | arch/arm64/kernel/entry32.S | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/arm64/kernel/entry32.S b/arch/arm64/kernel/entry32.S index 9a8f6ae2530e..bd9bfaa9269b 100644 --- a/arch/arm64/kernel/entry32.S +++ b/arch/arm64/kernel/entry32.S @@ -19,9 +19,12 @@ */ #include <linux/linkage.h> +#include <linux/const.h> #include <asm/assembler.h> #include <asm/asm-offsets.h> +#include <asm/errno.h> +#include <asm/page.h> /* * System call wrappers for the AArch32 compatibility layer. @@ -54,6 +57,21 @@ ENTRY(compat_sys_fstatfs64_wrapper) ENDPROC(compat_sys_fstatfs64_wrapper) /* + * Note: off_4k (w5) is always in units of 4K. If we can't do the + * requested offset because it is not page-aligned, we return -EINVAL. + */ +ENTRY(compat_sys_mmap2_wrapper) +#if PAGE_SHIFT > 12 + tst w5, #~PAGE_MASK >> 12 + b.ne 1f + lsr w5, w5, #PAGE_SHIFT - 12 +#endif + b sys_mmap_pgoff +1: mov x0, #-EINVAL + ret +ENDPROC(compat_sys_mmap2_wrapper) + +/* * Wrappers for AArch32 syscalls that either take 64-bit parameters * in registers or that take 32-bit parameters which require sign * extension. |