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authorJeremy Fitzhardinge <jeremy@xensource.com>2007-10-16 11:51:29 -0700
committerJeremy Fitzhardinge <jeremy@goop.org>2007-10-16 11:51:29 -0700
commit8965c1c0950d459d99b8b81dfc1ab02e3d2cfb08 (patch)
tree50ad53453562c7dc50afa866d52345bd6e820bef /arch/x86/xen/multicalls.h
parent93b1eab3d29e7ea32ee583de3362da84db06ded8 (diff)
downloadlinux-2.6.38-lt-ux500-8965c1c0950d459d99b8b81dfc1ab02e3d2cfb08.tar.gz
paravirt: clean up lazy mode handling
Currently, the set_lazy_mode pv_op is overloaded with 5 functions: 1. enter lazy cpu mode 2. leave lazy cpu mode 3. enter lazy mmu mode 4. leave lazy mmu mode 5. flush pending batched operations This complicates each paravirt backend, since it needs to deal with all the possible state transitions, handling flushing, etc. In particular, flushing is quite distinct from the other 4 functions, and seems to just cause complication. This patch removes the set_lazy_mode operation, and adds "enter" and "leave" lazy mode operations on mmu_ops and cpu_ops. All the logic associated with enter and leaving lazy states is now in common code (basically BUG_ONs to make sure that no mode is current when entering a lazy mode, and make sure that the mode is current when leaving). Also, flush is handled in a common way, by simply leaving and re-entering the lazy mode. The result is that the Xen, lguest and VMI lazy mode implementations are much simpler. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Cc: Andi Kleen <ak@suse.de> Cc: Zach Amsden <zach@vmware.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Avi Kivity <avi@qumranet.com> Cc: Anthony Liguory <aliguori@us.ibm.com> Cc: "Glauber de Oliveira Costa" <glommer@gmail.com> Cc: Jun Nakajima <jun.nakajima@intel.com>
Diffstat (limited to 'arch/x86/xen/multicalls.h')
-rw-r--r--arch/x86/xen/multicalls.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/xen/multicalls.h b/arch/x86/xen/multicalls.h
index e6f7530b156..5d96a5fa210 100644
--- a/arch/x86/xen/multicalls.h
+++ b/arch/x86/xen/multicalls.h
@@ -35,7 +35,7 @@ void xen_mc_flush(void);
/* Issue a multicall if we're not in a lazy mode */
static inline void xen_mc_issue(unsigned mode)
{
- if ((xen_get_lazy_mode() & mode) == 0)
+ if ((paravirt_get_lazy_mode() & mode) == 0)
xen_mc_flush();
/* restore flags saved in xen_mc_batch */