From 4dcaebbf6586d299be8513512a1253f177b803d7 Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Thu, 29 Sep 2011 16:53:29 +0100 Subject: xen: use generic functions instead of xen_{alloc, free}_vm_area() Replace calls to the Xen-specific xen_alloc_vm_area() and xen_free_vm_area() functions with the generic equivalent (alloc_vm_area() and free_vm_area()). On x86, these were identical already. Signed-off-by: David Vrabel Signed-off-by: Konrad Rzeszutek Wilk --- arch/x86/xen/grant-table.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/x86/xen/grant-table.c') diff --git a/arch/x86/xen/grant-table.c b/arch/x86/xen/grant-table.c index 49ba9b5224d1..6bbfd7ac5e81 100644 --- a/arch/x86/xen/grant-table.c +++ b/arch/x86/xen/grant-table.c @@ -71,7 +71,7 @@ int arch_gnttab_map_shared(unsigned long *frames, unsigned long nr_gframes, if (shared == NULL) { struct vm_struct *area = - xen_alloc_vm_area(PAGE_SIZE * max_nr_gframes); + alloc_vm_area(PAGE_SIZE * max_nr_gframes); BUG_ON(area == NULL); shared = area->addr; *__shared = shared; -- cgit v1.2.1 From cd12909cb576d37311fe35868780e82d5007d0c8 Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Thu, 29 Sep 2011 16:53:32 +0100 Subject: xen: map foreign pages for shared rings by updating the PTEs directly When mapping a foreign page with xenbus_map_ring_valloc() with the GNTTABOP_map_grant_ref hypercall, set the GNTMAP_contains_pte flag and pass a pointer to the PTE (in init_mm). After the page is mapped, the usual fault mechanism can be used to update additional MMs. This allows the vmalloc_sync_all() to be removed from alloc_vm_area(). Signed-off-by: David Vrabel Acked-by: Andrew Morton [v1: Squashed fix by Michal for no-mmu case] Signed-off-by: Konrad Rzeszutek Wilk Signed-off-by: Michal Simek --- arch/x86/xen/grant-table.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/x86/xen/grant-table.c') diff --git a/arch/x86/xen/grant-table.c b/arch/x86/xen/grant-table.c index 6bbfd7ac5e81..5a40d24ba331 100644 --- a/arch/x86/xen/grant-table.c +++ b/arch/x86/xen/grant-table.c @@ -71,7 +71,7 @@ int arch_gnttab_map_shared(unsigned long *frames, unsigned long nr_gframes, if (shared == NULL) { struct vm_struct *area = - alloc_vm_area(PAGE_SIZE * max_nr_gframes); + alloc_vm_area(PAGE_SIZE * max_nr_gframes, NULL); BUG_ON(area == NULL); shared = area->addr; *__shared = shared; -- cgit v1.2.1