lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

x86: use native register access for native tlb flushing

Browse Source 
currently these are paravirtulaized, doesn't appear any callers rely on
this (no pv_ops backends are using native_tlb and overriding cr3/4
access).

[ Impact: fix lockdep warning with paravirt and function tracer ]

Signed-off-by: Chris Wright <chrisw@sous-sol.org>
LKML-Reference: <20090423172138.GR3036@sequoia.sous-sol.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Chris Wright
2009-04-23 10:21:38 -07:00
committed by Steven Rostedt
parent 75db37d2f4
commit d7285c6b5c
1 changed files with 4 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
arch/x86/include/asm/tlbflush.h
View File

@@ -17,7 +17,7 @@
static inline void __native_flush_tlb(void) static inline void __native_flush_tlb(void)
{ {
write_cr3(read_cr3()); native_write_cr3(native_read_cr3());
} }
static inline void __native_flush_tlb_global(void) static inline void __native_flush_tlb_global(void)
@@ -32,11 +32,11 @@ static inline void __native_flush_tlb_global(void)
*/ */
raw_local_irq_save(flags); raw_local_irq_save(flags);
cr4 = read_cr4(); cr4 = native_read_cr4();
/* clear PGE */ /* clear PGE */
write_cr4(cr4 & ~X86_CR4_PGE); native_write_cr4(cr4 & ~X86_CR4_PGE);
/* write old PGE again and flush TLBs */ /* write old PGE again and flush TLBs */
write_cr4(cr4); native_write_cr4(cr4);
raw_local_irq_restore(flags); raw_local_irq_restore(flags);
} }