Commit-ID: 7a4b7e5e741fe0a72a517b0367a2659aa53f7c44
Gitweb: http://git.kernel.org/tip/7a4b7e5e741fe0a72a517b0367a2659aa53f7c44
Author: Jan Beulich <JBeulich@xxxxxxxxxx>
AuthorDate: Tue, 6 Oct 2009 16:32:43 +0100
Committer: Ingo Molnar <mingo@xxxxxxx>
CommitDate: Mon, 12 Oct 2009 18:06:48 +0200
x86: Fix Suspend to RAM freeze on Acer Aspire 1511Lmi laptop
Move the trampoline and accessors back out of .cpuinit.* for the
case of 64-bits+ACPI_SLEEP.
This solves s2ram hangs reported in:
http://bugzilla.kernel.org/show_bug.cgi?id=14279
Reported-and-bisected-by: Christian Casteyde <casteyde.christian@xxxxxxx>
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
Cc: <bugzilla-daemon@xxxxxxxxxxxxxxxxxxx>
Cc: "Andrew Morton" <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: "Rafael J. Wysocki" <rjw@xxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
arch/x86/kernel/trampoline.c | 12 ++++++++++--
arch/x86/kernel/trampoline_64.S | 4 ++++
2 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kernel/trampoline.c b/arch/x86/kernel/trampoline.c
index 699f7ee..cd02212 100644
--- a/arch/x86/kernel/trampoline.c
+++ b/arch/x86/kernel/trampoline.c
@@ -3,8 +3,16 @@
#include <asm/trampoline.h>
#include <asm/e820.h>
+#if defined(CONFIG_X86_64) && defined(CONFIG_ACPI_SLEEP)
+#define __trampinit
+#define __trampinitdata
+#else
+#define __trampinit __cpuinit
+#define __trampinitdata __cpuinitdata
+#endif
+
/* ready for x86_64 and x86 */
-unsigned char *__cpuinitdata trampoline_base = __va(TRAMPOLINE_BASE);
+unsigned char *__trampinitdata trampoline_base = __va(TRAMPOLINE_BASE);
void __init reserve_trampoline_memory(void)
{
@@ -26,7 +34,7 @@ void __init reserve_trampoline_memory(void)
* bootstrap into the page concerned. The caller
* has made sure it's suitably aligned.
*/
-unsigned long __cpuinit setup_trampoline(void)
+unsigned long __trampinit setup_trampoline(void)
{
memcpy(trampoline_base, trampoline_data, TRAMPOLINE_SIZE);
return virt_to_phys(trampoline_base);
diff --git a/arch/x86/kernel/trampoline_64.S b/arch/x86/kernel/trampoline_64.S
index 596d54c..3af2dff 100644
--- a/arch/x86/kernel/trampoline_64.S
+++ b/arch/x86/kernel/trampoline_64.S
@@ -32,8 +32,12 @@
#include <asm/segment.h>
#include <asm/processor-flags.h>
+#ifdef CONFIG_ACPI_SLEEP
+.section .rodata, "a", @progbits
+#else
/* We can free up the trampoline after bootup if cpu hotplug is not supported. */
__CPUINITRODATA
+#endif
.code16
ENTRY(trampoline_data)
--
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