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| author | Jeremy Fitzhardinge <jeremy@xensource.com> | 2007-10-16 11:51:30 -0700 |
|---|---|---|
| committer | Jeremy Fitzhardinge <jeremy@goop.org> | 2007-10-16 11:51:30 -0700 |
| commit | 91e0c5f3dad47838cb2ecc1865ce789a0b7182b1 (patch) | |
| tree | 8c72d3f7bd574088fc457f0ce2117d6d986dac2c /arch/x86/xen/multicalls.h | |
| parent | f0d733942750c1ee6358c3a4a1a5d7ba73b7122f (diff) | |
| download | linux-91e0c5f3dad47838cb2ecc1865ce789a0b7182b1.tar.bz2 | |
xen: add batch completion callbacks
This adds a mechanism to register a callback function to be called once
a batch of hypercalls has been issued. This is typically used to unlock
things which must remain locked until the hypercall has taken place.
[ Stable folks: pre-req for 2.6.23 bugfix "xen: deal with stale cr3
values when unpinning pagetables" ]
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Stable Kernel <stable@kernel.org>
Diffstat (limited to 'arch/x86/xen/multicalls.h')
| -rw-r--r-- | arch/x86/xen/multicalls.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/xen/multicalls.h b/arch/x86/xen/multicalls.h index 5d96a5fa210c..8bae996d99a3 100644 --- a/arch/x86/xen/multicalls.h +++ b/arch/x86/xen/multicalls.h @@ -42,4 +42,7 @@ static inline void xen_mc_issue(unsigned mode) local_irq_restore(x86_read_percpu(xen_mc_irq_flags)); } +/* Set up a callback to be called when the current batch is flushed */ +void xen_mc_callback(void (*fn)(void *), void *data); + #endif /* _XEN_MULTICALLS_H */ |