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authorIsaku Yamahata <yamahata@valinux.co.jp>2009-03-04 21:05:42 +0900
committerTony Luck <tony.luck@intel.com>2009-03-26 10:51:02 -0700
commite4ff5b8f545811008123dd9556a51d814f562fcf (patch)
tree2c308a3b1cc002f0d345ed64dd94a395678543bb /arch/ia64/mm/init.c
parent1aec1c558a797512e922581b21a178a05438bfc9 (diff)
ia64/pv_ops: gate page paravirtualization.
paravirtualize gate page by allowing each pv_ops instances to define its own gate page. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/mm/init.c')
-rw-r--r--arch/ia64/mm/init.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index c9bc5b305ffa..8503d534794f 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -260,6 +260,7 @@ put_kernel_page (struct page *page, unsigned long address, pgprot_t pgprot)
static void __init
setup_gate (void)
{
+ void *gate_section;
struct page *page;
/*
@@ -267,10 +268,11 @@ setup_gate (void)
* headers etc. and once execute-only page to enable
* privilege-promotion via "epc":
*/
- page = virt_to_page(ia64_imva(__start_gate_section));
+ gate_section = paravirt_get_gate_section();
+ page = virt_to_page(ia64_imva(gate_section));
put_kernel_page(page, GATE_ADDR, PAGE_READONLY);
#ifdef HAVE_BUGGY_SEGREL
- page = virt_to_page(ia64_imva(__start_gate_section + PAGE_SIZE));
+ page = virt_to_page(ia64_imva(gate_section + PAGE_SIZE));
put_kernel_page(page, GATE_ADDR + PAGE_SIZE, PAGE_GATE);
#else
put_kernel_page(page, GATE_ADDR + PERCPU_PAGE_SIZE, PAGE_GATE);