Attachment 32562 Details for Bug 73701

[patch] Additional patch needed for 9.3

guard-page (text/plain), 1.95 KB, created by Andreas Kleen on 2005-03-22 15:39:28 UTC

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Creator: Andreas Kleen

Created: 2005-03-22 15:39:28 UTC

Size: 1.95 KB

patch

obsolete

>diff -u linux-2.6.11/include/asm-x86_64/pgtable.h-o linux-2.6.11/include/asm-x86_64/pgtable.h
>--- linux-2.6.11/include/asm-x86_64/pgtable.h-o	2005-03-21 14:04:31.000000000 +0100
>+++ linux-2.6.11/include/asm-x86_64/pgtable.h	2005-03-22 12:08:32.811875992 +0100
>@@ -335,6 +335,7 @@
> #define pmd_pfn(x)  ((pmd_val(x) >> PAGE_SHIFT) & __PHYSICAL_MASK)
> 
> #define pte_to_pgoff(pte) ((pte_val(pte) & PHYSICAL_PAGE_MASK) >> PAGE_SHIFT)
>+#define pte_bad(pte)    (pte_val(pte) & ~(PHYSICAL_PAGE_MASK|_PAGE_NX|0x1ff))
> #define pgoff_to_pte(off) ((pte_t) { ((off) << PAGE_SHIFT) | _PAGE_FILE })
> #define PTE_FILE_MAX_BITS __PHYSICAL_MASK_SHIFT
> 
>diff -u linux-2.6.11/include/asm-x86_64/page.h-o linux-2.6.11/include/asm-x86_64/page.h
>--- linux-2.6.11/include/asm-x86_64/page.h-o	2005-03-21 14:04:31.000000000 +0100
>+++ linux-2.6.11/include/asm-x86_64/page.h	2005-03-22 16:26:14.870285824 +0100
>@@ -69,12 +69,12 @@
> 
> #define __START_KERNEL		0xffffffff80100000UL
> #define __START_KERNEL_map	0xffffffff80000000UL
>-#define __PAGE_OFFSET           0xffff810000000000UL
>+#define __PAGE_OFFSET           (0xffff810000000000UL - 4096)
> 
> #else
> #define __START_KERNEL		0xffffffff80100000
> #define __START_KERNEL_map	0xffffffff80000000
>-#define __PAGE_OFFSET           0xffff810000000000
>+#define __PAGE_OFFSET           (0xffff810000000000 - PAGE_SIZE)
> #endif /* !__ASSEMBLY__ */
> 
> /* to align the pointer to the (next) page boundary */
>diff -u linux-2.6.11/include/asm-x86_64/processor.h-o linux-2.6.11/include/asm-x86_64/processor.h
>--- linux-2.6.11/include/asm-x86_64/processor.h-o	2005-03-21 14:06:01.000000000 +0100
>+++ linux-2.6.11/include/asm-x86_64/processor.h	2005-03-22 16:27:17.246803152 +0100
>@@ -160,9 +160,9 @@
> 
> 
> /*
>- * User space process size. 47bits.
>+ * User space process size. 47bits minus one guard page
>  */
>-#define TASK_SIZE	(0x800000000000UL)
>+#define TASK_SIZE	(0x800000000000UL - 4096)
> 
> /* This decides where the kernel will search for a free chunk of vm
>  * space during mmap's.

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Attachments on bug 73701: 32446 | 32562 | 38432 | 38441