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authorRusty Russell <rusty@rustcorp.com.au>2013-04-22 14:10:37 +0930
committerRusty Russell <rusty@rustcorp.com.au>2013-04-22 15:31:33 +0930
commit406a590ba105bfb7b67952f0a5f948e0d374e03e (patch)
tree97fbf193d865ff2fa1b1ab209589c1d456f89fa5 /drivers/lguest/x86
parent74ff582cd65ad01c45f1971feac28f23b7eb2687 (diff)
downloadlinux-406a590ba105bfb7b67952f0a5f948e0d374e03e.tar.bz2
lguest: prepare to make SWITCHER_ADDR a variable.
We currently use the whole top PGD entry for the switcher, but that's hitting the fixmap in some configurations (mainly, large NR_CPUS). Introduce a variable, currently set to the constant. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers/lguest/x86')
-rw-r--r--drivers/lguest/x86/core.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/lguest/x86/core.c b/drivers/lguest/x86/core.c
index 4af12e1844d5..20fae765d600 100644
--- a/drivers/lguest/x86/core.c
+++ b/drivers/lguest/x86/core.c
@@ -59,14 +59,14 @@ static struct {
/* Offset from where switcher.S was compiled to where we've copied it */
static unsigned long switcher_offset(void)
{
- return SWITCHER_ADDR - (unsigned long)start_switcher_text;
+ return switcher_addr - (unsigned long)start_switcher_text;
}
/* This cpu's struct lguest_pages. */
static struct lguest_pages *lguest_pages(unsigned int cpu)
{
return &(((struct lguest_pages *)
- (SWITCHER_ADDR + SHARED_SWITCHER_PAGES*PAGE_SIZE))[cpu]);
+ (switcher_addr + SHARED_SWITCHER_PAGES*PAGE_SIZE))[cpu]);
}
static DEFINE_PER_CPU(struct lg_cpu *, lg_last_cpu);