diff options
Diffstat (limited to 'arch/x86/kernel/head_32.S')
| -rw-r--r-- | arch/x86/kernel/head_32.S | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S index 9150ca9b5f8..39677965e16 100644 --- a/arch/x86/kernel/head_32.S +++ b/arch/x86/kernel/head_32.S @@ -51,6 +51,15 @@ */ LOW_PAGES = 1<<(32-PAGE_SHIFT_asm) +/* + * To preserve the DMA pool in PAGEALLOC kernels, we'll allocate + * pagetables from above the 16MB DMA limit, so we'll have to set + * up pagetables 16MB more (worst-case): + */ +#ifdef CONFIG_DEBUG_PAGEALLOC +LOW_PAGES = LOW_PAGES + 0x1000000 +#endif + #if PTRS_PER_PMD > 1 PAGE_TABLE_SIZE = (LOW_PAGES / PTRS_PER_PMD) + PTRS_PER_PGD #else @@ -443,6 +452,7 @@ early_page_fault: early_fault: cld #ifdef CONFIG_PRINTK + pusha movl $(__KERNEL_DS),%eax movl %eax,%ds movl %eax,%es @@ -534,8 +544,15 @@ int_msg: .asciz "Unknown interrupt or fault at EIP %p %p %p\n" fault_msg: - .ascii "Int %d: CR2 %p err %p EIP %p CS %p flags %p\n" - .asciz "Stack: %p %p %p %p %p %p %p %p\n" + .ascii \ +/* fault info: */ "BUG: Int %d: CR2 %p\n" \ +/* pusha regs: */ " EDI %p ESI %p EBP %p ESP %p\n" \ + " EBX %p EDX %p ECX %p EAX %p\n" \ +/* fault frame: */ " err %p EIP %p CS %p flg %p\n" \ + \ + "Stack: %p %p %p %p %p %p %p %p\n" \ + " %p %p %p %p %p %p %p %p\n" \ + " %p %p %p %p %p %p %p %p\n" #include "../../x86/xen/xen-head.S" |