aboutsummaryrefslogtreecommitdiffstats
path: root/arch/x86/kernel/e820.c
diff options
context:
space:
mode:
authorRafael J. Wysocki <rjw@sisk.pl>2008-12-07 18:50:22 -0500
committerIngo Molnar <mingo@elte.hu>2008-12-08 07:49:45 -0500
commit3e1e9002aa8b32bd4c95ac6c8fad376b7a8127fb (patch)
treef9cee272743423033e78d283955aa7c493691a2d /arch/x86/kernel/e820.c
parent218d11a8b071b23b76c484fd5f72a4fe3306801e (diff)
x86: change static allocation of trampoline area
Impact: fix trampoline sizing bug, save space While debugging a suspend-to-RAM related issue it occured to me that if the trampoline code had grown past 4 KB, we would have been allocating too little memory for it, since the 4 KB size of the trampoline is hardcoded into arch/x86/kernel/e820.c . Change that by making the kernel compute the trampoline size and allocate as much memory as necessary. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/e820.c')
-rw-r--r--arch/x86/kernel/e820.c16
1 files changed, 0 insertions, 16 deletions
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 7aafeb5263ef..65a13943e098 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -677,22 +677,6 @@ struct early_res {
677}; 677};
678static struct early_res early_res[MAX_EARLY_RES] __initdata = { 678static struct early_res early_res[MAX_EARLY_RES] __initdata = {
679 { 0, PAGE_SIZE, "BIOS data page" }, /* BIOS data page */ 679 { 0, PAGE_SIZE, "BIOS data page" }, /* BIOS data page */
680#if defined(CONFIG_X86_64) && defined(CONFIG_X86_TRAMPOLINE)
681 { TRAMPOLINE_BASE, TRAMPOLINE_BASE + 2 * PAGE_SIZE, "TRAMPOLINE" },
682#endif
683#if defined(CONFIG_X86_32) && defined(CONFIG_SMP)
684 /*
685 * But first pinch a few for the stack/trampoline stuff
686 * FIXME: Don't need the extra page at 4K, but need to fix
687 * trampoline before removing it. (see the GDT stuff)
688 */
689 { PAGE_SIZE, PAGE_SIZE + PAGE_SIZE, "EX TRAMPOLINE" },
690 /*
691 * Has to be in very low memory so we can execute
692 * real-mode AP code.
693 */
694 { TRAMPOLINE_BASE, TRAMPOLINE_BASE + PAGE_SIZE, "TRAMPOLINE" },
695#endif
696 {} 680 {}
697}; 681};
698 682