Commit-ID: d31bf07f71a5568b48c5ed448e4299050469f615 Gitweb: http://git.kernel.org/tip/d31bf07f71a5568b48c5ed448e4299050469f615 Author: Andy Lutomirski <[email protected]> AuthorDate: Wed, 18 Mar 2015 18:33:27 -0700 Committer: Ingo Molnar <[email protected]> CommitDate: Mon, 23 Mar 2015 10:08:20 +0100
x86/mm/fault: Use TASK_SIZE_MAX in is_prefetch() This is slightly shorter and slightly faster. It's also more correct: the split between user and kernel addresses is TASK_SIZE_MAX, regardless of ti->flags. Signed-off-by: Andy Lutomirski <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Brad Spengler <[email protected]> Cc: Denys Vlasenko <[email protected]> Cc: H. Peter Anvin <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Thomas Gleixner <[email protected]> Link: http://lkml.kernel.org/r/09156b63bad90a327827003c9e53faa82ef4c56e.1426728647.git.l...@kernel.org Signed-off-by: Ingo Molnar <[email protected]> --- arch/x86/mm/fault.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index ede025f..ae340d3 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -148,7 +148,7 @@ is_prefetch(struct pt_regs *regs, unsigned long error_code, unsigned long addr) instr = (void *)convert_ip_to_linear(current, regs); max_instr = instr + 15; - if (user_mode(regs) && instr >= (unsigned char *)TASK_SIZE) + if (user_mode(regs) && instr >= (unsigned char *)TASK_SIZE_MAX) return 0; while (instr < max_instr) { -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
