diff options
| author | Rusty Russell <rusty@rustcorp.com.au> | 2013-04-22 14:10:40 +0930 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2013-04-22 15:45:01 +0930 |
| commit | 3412b6ae2924e068f9932f841bdea0f2d8424502 (patch) | |
| tree | 75b499710ee82715c864d5787383ad35a9cd47bd /drivers/lguest/core.c | |
| parent | f1f394b1c33d93416c90f97e201d4d386c04af55 (diff) | |
lguest: don't share Switcher PTE pages between guests.
We currently use the whole top PGD entry for the switcher, so we
simply share a fixed page of PTEs between all guests (actually, it's
one per Host CPU, to ensure isolation between guests).
Changes to a scheme where every guest has its own mappings.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers/lguest/core.c')
| -rw-r--r-- | drivers/lguest/core.c | 10 |
1 files changed, 1 insertions, 9 deletions
diff --git a/drivers/lguest/core.c b/drivers/lguest/core.c index b6c71c32308c..7e1d7ee36478 100644 --- a/drivers/lguest/core.c +++ b/drivers/lguest/core.c @@ -333,15 +333,10 @@ static int __init init(void) if (err) goto out; - /* Now we set up the pagetable implementation for the Guests. */ - err = init_pagetables(lg_switcher_pages); - if (err) - goto unmap; - /* We might need to reserve an interrupt vector. */ err = init_interrupts(); if (err) - goto free_pgtables; + goto unmap; /* /dev/lguest needs to be registered. */ err = lguest_device_init(); @@ -356,8 +351,6 @@ static int __init init(void) free_interrupts: free_interrupts(); -free_pgtables: - free_pagetables(); unmap: unmap_switcher(); out: @@ -369,7 +362,6 @@ static void __exit fini(void) { lguest_device_remove(); free_interrupts(); - free_pagetables(); unmap_switcher(); lguest_arch_host_fini(); |