Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=476c6c11a9ee4610ff0e4941e3851729f7caf062 Commit: 476c6c11a9ee4610ff0e4941e3851729f7caf062 Parent: e697789d64f8748cb219d7f5c413c512953802cc Author: Rusty Russell <[EMAIL PROTECTED]> AuthorDate: Tue Jan 1 21:48:36 2008 +1100 Committer: Linus Torvalds <[EMAIL PROTECTED]> CommitDate: Tue Jan 1 11:30:35 2008 -0800
fix lguest rmmod "bad pgd" After 17d57a9206b4de6ad082ac9f2d2346985abbd2aa ("x86: fix x86-32 early fixmap initialization.") removing lg.ko caused a printk from vunmap: mm/memory.c:115: bad pgd 004b3027. On the second use after module load, the kernel crashes. This fixes the immediate problem (accessed and dirty bits not set as expected in pmd_none_or_clear_bad). I can't see why this would cause a crash, but I haven't been able to reproduce it once this is applied. Signed-off-by: Rusty Russell <[EMAIL PROTECTED]> Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]> --- arch/x86/kernel/head_32.S | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S index ac0637a..fbad51f 100644 --- a/arch/x86/kernel/head_32.S +++ b/arch/x86/kernel/head_32.S @@ -196,7 +196,7 @@ default_entry: /* Do an early initialization of the fixmap area */ movl $(swapper_pg_dir - __PAGE_OFFSET), %edx movl $(swapper_pg_pmd - __PAGE_OFFSET), %eax - addl $0x007, %eax /* 0x007 = PRESENT+RW+USER */ + addl $0x67, %eax /* 0x67 == _PAGE_TABLE */ movl %eax, 4092(%edx) xorl %ebx,%ebx /* This is the boot CPU (BSP) */ - To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html