diff options
Diffstat (limited to 'arch/um/include/shared')
| -rw-r--r-- | arch/um/include/shared/as-layout.h | 2 | ||||
| -rw-r--r-- | arch/um/include/shared/skas/stub-data.h | 9 |
2 files changed, 10 insertions, 1 deletions
diff --git a/arch/um/include/shared/as-layout.h b/arch/um/include/shared/as-layout.h index c22f46a757dc..06292fca5a4d 100644 --- a/arch/um/include/shared/as-layout.h +++ b/arch/um/include/shared/as-layout.h @@ -23,7 +23,7 @@ #define STUB_START stub_start #define STUB_CODE STUB_START #define STUB_DATA (STUB_CODE + UM_KERN_PAGE_SIZE) -#define STUB_DATA_PAGES 1 /* must be a power of two */ +#define STUB_DATA_PAGES 2 /* must be a power of two */ #define STUB_END (STUB_DATA + STUB_DATA_PAGES * UM_KERN_PAGE_SIZE) #ifndef __ASSEMBLY__ diff --git a/arch/um/include/shared/skas/stub-data.h b/arch/um/include/shared/skas/stub-data.h index 5e3ade3fb38b..779d2a3bac5d 100644 --- a/arch/um/include/shared/skas/stub-data.h +++ b/arch/um/include/shared/skas/stub-data.h @@ -8,10 +8,19 @@ #ifndef __STUB_DATA_H #define __STUB_DATA_H +#include <linux/compiler_types.h> +#include <as-layout.h> + struct stub_data { unsigned long offset; int fd; long parent_err, child_err; + + /* 128 leaves enough room for additional fields in the struct */ + unsigned char syscall_data[UM_KERN_PAGE_SIZE - 128] __aligned(16); + + /* Stack for our signal handlers and for calling into . */ + unsigned char sigstack[UM_KERN_PAGE_SIZE] __aligned(UM_KERN_PAGE_SIZE); }; #endif |