aboutsummaryrefslogtreecommitdiffstats
path: root/arch/x86
diff options
context:
space:
mode:
authorJeremy Fitzhardinge <jeremy@goop.org>2009-05-07 14:56:44 -0400
committerIngo Molnar <mingo@elte.hu>2009-05-08 04:49:11 -0400
commit33df4db04a79660150e1948e3296eeb451ac121b (patch)
tree6245453d81b04528cac33b53dea506e6b4e94d83 /arch/x86
parent6407df5ca54a511054200a1eb23f78f723ca1de4 (diff)
x86: xen, i386: reserve Xen pagetables
The Xen pagetables are no longer implicitly reserved as part of the other i386_start_kernel reservations, so make sure we explicitly reserve them. This prevents them from being released into the general kernel free page pool and reused. [ Impact: fix Xen guest crash ] Also-Bisected-by: Bryan Donlan <bdonlan@gmail.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Xen-devel <xen-devel@lists.xensource.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <4A032EEC.30509@goop.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/xen/mmu.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 9842b1212407..e25a78e1113a 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -1794,6 +1794,11 @@ __init pgd_t *xen_setup_kernel_pagetable(pgd_t *pgd,
1794 1794
1795 pin_pagetable_pfn(MMUEXT_PIN_L3_TABLE, PFN_DOWN(__pa(swapper_pg_dir))); 1795 pin_pagetable_pfn(MMUEXT_PIN_L3_TABLE, PFN_DOWN(__pa(swapper_pg_dir)));
1796 1796
1797 reserve_early(__pa(xen_start_info->pt_base),
1798 __pa(xen_start_info->pt_base +
1799 xen_start_info->nr_pt_frames * PAGE_SIZE),
1800 "XEN PAGETABLES");
1801
1797 return swapper_pg_dir; 1802 return swapper_pg_dir;
1798} 1803}
1799#endif /* CONFIG_X86_64 */ 1804#endif /* CONFIG_X86_64 */