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| author | Jeremy Fitzhardinge <jeremy@xensource.com> | 2007-07-17 18:37:06 -0700 |
|---|---|---|
| committer | Jeremy Fitzhardinge <jeremy@goop.org> | 2007-07-18 08:47:44 -0700 |
| commit | f120f13ea0dbb0b0d6675683d5f6faea71277e65 (patch) | |
| tree | 6b525ab73bedfa78e43dee303ac991099377e9c5 /arch/i386/xen/mmu.c | |
| parent | f87e4cac4f4e940b328d3deb5b53e642e3881f43 (diff) | |
| download | op-kernel-dev-f120f13ea0dbb0b0d6675683d5f6faea71277e65.zip op-kernel-dev-f120f13ea0dbb0b0d6675683d5f6faea71277e65.tar.gz | |
xen: Add support for preemption
Add Xen support for preemption. This is mostly a cleanup of existing
preempt_enable/disable calls, or just comments to explain the current
usage.
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Diffstat (limited to 'arch/i386/xen/mmu.c')
| -rw-r--r-- | arch/i386/xen/mmu.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/i386/xen/mmu.c b/arch/i386/xen/mmu.c index bc49ef8..f431cf1 100644 --- a/arch/i386/xen/mmu.c +++ b/arch/i386/xen/mmu.c @@ -38,6 +38,7 @@ * * Jeremy Fitzhardinge <jeremy@xensource.com>, XenSource Inc, 2007 */ +#include <linux/sched.h> #include <linux/highmem.h> #include <linux/bug.h> #include <linux/sched.h> @@ -531,5 +532,7 @@ void xen_exit_mmap(struct mm_struct *mm) drop_mm_ref(mm); put_cpu(); + spin_lock(&mm->page_table_lock); xen_pgd_unpin(mm->pgd); + spin_unlock(&mm->page_table_lock); } |
