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authorJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2009-02-17 23:05:19 -0800
committerJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2009-03-29 23:35:38 -0700
commitb8bcfe997e46150fedcc3f5b26b846400122fdd9 (patch)
tree435f1bdfa3317e13ddcd3b87176602b597639c1b /arch/x86/mm/iomap_32.c
parenta8a93f3f03b7a8008d720e8d91798efe599d416c (diff)
downloadlinux-b8bcfe997e46150fedcc3f5b26b846400122fdd9.tar.gz
x86/paravirt: remove lazy mode in interrupts
Impact: simplification, robustness

Make paravirt_lazy_mode() always return PARAVIRT_LAZY_NONE
when in an interrupt.  This prevents interrupt code from
accidentally inheriting an outer lazy state, and instead
does everything synchronously.  Outer batched operations
are left deferred.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/mm/iomap_32.c')
-rw-r--r--arch/x86/mm/iomap_32.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/x86/mm/iomap_32.c b/arch/x86/mm/iomap_32.c
index 04102d42ff42..b6a61f3d7ef8 100644
--- a/arch/x86/mm/iomap_32.c
+++ b/arch/x86/mm/iomap_32.c
@@ -74,7 +74,6 @@ iounmap_atomic(void *kvaddr, enum km_type type)
 	if (vaddr == __fix_to_virt(FIX_KMAP_BEGIN+idx))
 		kpte_clear_flush(kmap_pte-idx, vaddr);
 
-	arch_flush_lazy_mmu_mode();
 	pagefault_enable();
 }
 EXPORT_SYMBOL_GPL(iounmap_atomic);