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| author | Al Viro <viro@ftp.linux.org.uk> | 2011-08-18 20:10:19 +0100 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2011-11-02 14:15:19 +0100 |
| commit | c7ea591c91162a203a5961d69f5c86a6ef9d50c1 (patch) | |
| tree | 06fd34b8f1b2009c3266b587b6024c62db6920fe /arch/x86/um/asm/processor.h | |
| parent | 3579a389730dd74d9f280152c52aa851dd1da860 (diff) | |
| download | linux-c7ea591c91162a203a5961d69f5c86a6ef9d50c1.tar.gz linux-c7ea591c91162a203a5961d69f5c86a6ef9d50c1.tar.bz2 linux-c7ea591c91162a203a5961d69f5c86a6ef9d50c1.zip | |
um: increase stack growth cushion in pagefault
analog of [PATCH] i386: let usermode execute the "enter" instruction from
circa 2006.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/x86/um/asm/processor.h')
| -rw-r--r-- | arch/x86/um/asm/processor.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/um/asm/processor.h b/arch/x86/um/asm/processor.h index d3ac1cecf0f4..f34c4b2d09f3 100644 --- a/arch/x86/um/asm/processor.h +++ b/arch/x86/um/asm/processor.h @@ -10,6 +10,9 @@ # include "processor_64.h" #endif +#define ARCH_IS_STACKGROW(address) \ + (address + 65536 + 32 * sizeof(unsigned long) >= UPT_SP(¤t->thread.regs.regs)) + #include <asm/processor-generic.h> #endif |