direct-io.hg

changeset 10995:9f70d57aadcf

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Fix BUG_ON on switch_mm if XENFEAT_writable_page_tables is enabled.

Signed-of-by: Ian Campbell <ian.campbell@xensource.com>
author Ian.Campbell@xensource.com
date Wed Aug 09 11:26:11 2006 +0100 (2006-08-09)
parents 3a2fee0d84f7
children c1850c659e40
files linux-2.6-xen-sparse/include/asm-i386/mach-xen/asm/mmu_context.h
line diff
     1.1 --- a/linux-2.6-xen-sparse/include/asm-i386/mach-xen/asm/mmu_context.h	Wed Aug 09 10:53:16 2006 +0100
     1.2 +++ b/linux-2.6-xen-sparse/include/asm-i386/mach-xen/asm/mmu_context.h	Wed Aug 09 11:26:11 2006 +0100
     1.3 @@ -51,7 +51,8 @@ static inline void switch_mm(struct mm_s
     1.4  	struct mmuext_op _op[2], *op = _op;
     1.5  
     1.6  	if (likely(prev != next)) {
     1.7 -		BUG_ON(!test_bit(PG_pinned, &virt_to_page(next->pgd)->flags));
     1.8 +		BUG_ON(!xen_feature(XENFEAT_writable_page_tables) &&
     1.9 +		       !test_bit(PG_pinned, &virt_to_page(next->pgd)->flags));
    1.10  
    1.11  		/* stop flush ipis for the previous mm */
    1.12  		cpu_clear(cpu, prev->cpu_vm_mask);