lguest: map Switcher below fixmap.

Now we've adjusted all the code, we can simply set switcher_addr to
wherever it needs to go below the fixmaps, rather than asserting that
it should be so.

With large NR_CPUS and PAE, people were hitting the "mapping switcher
would thwack fixmap" message.

Reported-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

1 files changed, 0 insertions, 6 deletions

diff --git a/arch/x86/include/asm/lguest.h b/arch/x86/include/asm/lguest.h
index 74edebd010ab..e2d4a4afa8c3 100644
--- a/arch/x86/include/asm/lguest.h
+++ b/arch/x86/include/asm/lguest.h
@@ -14,12 +14,6 @@
 /* Page for Switcher text itself, then two pages per cpu */
 #define TOTAL_SWITCHER_PAGES (1 + 2 * nr_cpu_ids)
 
-/* We map at -4M (-2M for PAE) for ease of mapping (one PTE page). */
-#ifdef CONFIG_X86_PAE
-#define SWITCHER_ADDR 0xFFE00000
-#else
-#define SWITCHER_ADDR 0xFFC00000
-#endif
 /* Where we map the Switcher, in both Host and Guest. */
 extern unsigned long switcher_addr;