Messages in this thread Patch in this message | | | Subject | [patch 1/5] -fstack-protector feature: annotate the PDA offsets | From | Arjan van de Ven <> | Date | Wed, 16 Aug 2006 18:49:33 +0200 |
| |
Subject: [patch 1/5] Add comments to the PDA structure to annotate offsets From: Arjan van de Ven <arjan@linux.intel.com>
Change the comments in the pda structure to make the first fields to have their offset documented and to have the comments aligned. The stack protector series needs a field at offset 40 (gcc ABI); annotate upto 40 for that reason.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> CC: Andi Kleen <ak@suse.de> --- include/asm-x86_64/pda.h | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-)
Index: linux-2.6.18-rc4-stackprot/include/asm-x86_64/pda.h =================================================================== --- linux-2.6.18-rc4-stackprot.orig/include/asm-x86_64/pda.h +++ linux-2.6.18-rc4-stackprot/include/asm-x86_64/pda.h @@ -9,14 +9,12 @@ /* Per processor datastructure. %gs points to it while the kernel runs */ struct x8664_pda { - struct task_struct *pcurrent; /* Current process */ - unsigned long data_offset; /* Per cpu data offset from linker address */ - unsigned long kernelstack; /* top of kernel stack for current */ - unsigned long oldrsp; /* user rsp for system call */ -#if DEBUG_STKSZ > EXCEPTION_STKSZ - unsigned long debugstack; /* #DB/#BP stack. */ -#endif - int irqcount; /* Irq nesting counter. Starts with -1 */ + struct task_struct *pcurrent; /* 0 */ /* Current process */ + unsigned long data_offset; /* 8 */ /* Per cpu data offset from linker address */ + unsigned long kernelstack; /* 16 */ /* top of kernel stack for current */ + unsigned long oldrsp; /* 24 */ /* user rsp for system call */ + unsigned long debugstack; /* 32 */ /* #DB/#BP stack. */ + int irqcount; /* 40 */ /* Irq nesting counter. Starts with -1 */ int cpunumber; /* Logical CPU number */ char *irqstackptr; /* top of irqstack */ int nodenumber; /* number of current node */ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |