Commit cef43bf6 authored by Jeremy Fitzhardinge's avatar Jeremy Fitzhardinge Committed by Ingo Molnar
Browse files

xen: fix allocation and use of large ldts, cleanup 



Add a proper comment for set_aliased_prot() and fix an
unsigned long/void * warning.

Signed-off-by: default avatarJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 4b336b06

arch/x86/xen/enlighten.c

+5 −4
Original line number Diff line number Diff line
@@ -237,8 +237,10 @@ static unsigned long xen_store_tr(void) 
}



/*

 * If 'v' is a vmalloc mapping, then find the linear mapping of the

 * page (if any) and also set its protections to match:

 * Set the page permissions for a particular virtual address.  If the

 * address is a vmalloc mapping (or other non-linear mapping), then

 * find the linear mapping of the page and also set its protections to

 * match.

 */

static void set_aliased_prot(void *v, pgprot_t prot)

{
@@ -387,8 +389,7 @@ static void xen_load_gs_index(unsigned int idx) 
static void xen_write_ldt_entry(struct desc_struct *dt, int entrynum,

				const void *ptr)

{

	unsigned long lp = (unsigned long)&dt[entrynum];

	xmaddr_t mach_lp = arbitrary_virt_to_machine(lp);

	xmaddr_t mach_lp = arbitrary_virt_to_machine(&dt[entrynum]);

	u64 entry = *(u64 *)ptr;



	preempt_disable();