Commit 701a261a authored by Boris Ostrovsky's avatar Boris Ostrovsky Committed by David Vrabel

x86/xen: Free bootmem in free_p2m_page() during early boot

With recent changes in p2m we now have legitimate cases when
p2m memory needs to be freed during early boot (i.e. before
slab is initialized).
Signed-off-by: default avatarBoris Ostrovsky <boris.ostrovsky@oracle.com>
Reviewed-by: default avatarJuergen Gross <jgross@suse.com>
Signed-off-by: default avatarDavid Vrabel <david.vrabel@citrix.com>
parent 8b8cd8a3
...@@ -167,10 +167,13 @@ static void * __ref alloc_p2m_page(void) ...@@ -167,10 +167,13 @@ static void * __ref alloc_p2m_page(void)
return (void *)__get_free_page(GFP_KERNEL | __GFP_REPEAT); return (void *)__get_free_page(GFP_KERNEL | __GFP_REPEAT);
} }
/* Only to be called in case of a race for a page just allocated! */ static void __ref free_p2m_page(void *p)
static void free_p2m_page(void *p)
{ {
BUG_ON(!slab_is_available()); if (unlikely(!slab_is_available())) {
free_bootmem((unsigned long)p, PAGE_SIZE);
return;
}
free_page((unsigned long)p); free_page((unsigned long)p);
} }
......
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