/[pkg-src]/trunk/kernel26-xen/patches-2.6.25-r1/1132-2.6.25-xen-64-pin-user-PGD-on-activate_mm-and-dup_mmap.patch |
Contents of /trunk/kernel26-xen/patches-2.6.25-r1/1132-2.6.25-xen-64-pin-user-PGD-on-activate_mm-and-dup_mmap.patch
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Thu May 22 23:13:13 2008 UTC (16 years ago) by niro
File size: 1034 byte(s)
Thu May 22 23:13:13 2008 UTC (16 years ago) by niro
File size: 1034 byte(s)
-ver bump to 2.6.25-magellan-r1: - linux-2.6.25.4 - fbcondecor-0.9.4 - squashfs-3.3 - unionfs-2.3.3 - tuxonice-3.0-rc7 - linux-phc-0.3.0 - acpi-dstd-0.9a - reiser4 - xen-3.2.0 . ipw3945-1.2.2
1 | From 960214f45fc39c79908daaba745f9813aeba1336 Mon Sep 17 00:00:00 2001 |
2 | From: Eduardo Habkost <ehabkost@redhat.com> |
3 | Date: Fri, 25 Jan 2008 12:05:30 -0200 |
4 | Subject: [PATCH] Xen-64: pin user PGD on activate_mm() and dup_mmap() |
5 | |
6 | Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> |
7 | --- |
8 | arch/x86/xen/mmu.c | 6 ++++++ |
9 | 1 files changed, 6 insertions(+), 0 deletions(-) |
10 | |
11 | diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c |
12 | index 9920c90..998cfb9 100644 |
13 | --- a/arch/x86/xen/mmu.c |
14 | +++ b/arch/x86/xen/mmu.c |
15 | @@ -578,6 +578,9 @@ void xen_activate_mm(struct mm_struct *prev, struct mm_struct *next) |
16 | { |
17 | spin_lock(&next->page_table_lock); |
18 | xen_pgd_pin(next->pgd); |
19 | +#ifdef CONFIG_X86_64 |
20 | + xen_pgd_pin(__user_pgd(next->pgd)); |
21 | +#endif |
22 | spin_unlock(&next->page_table_lock); |
23 | } |
24 | |
25 | @@ -585,6 +588,9 @@ void xen_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm) |
26 | { |
27 | spin_lock(&mm->page_table_lock); |
28 | xen_pgd_pin(mm->pgd); |
29 | +#ifdef CONFIG_X86_64 |
30 | + xen_pgd_pin(__user_pgd(mm->pgd)); |
31 | +#endif |
32 | spin_unlock(&mm->page_table_lock); |
33 | } |
34 | |
35 | -- |
36 | 1.5.4.1 |
37 |