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Message-Id: <20110224155221.4f35f728.sfr@canb.auug.org.au>
Date: Thu, 24 Feb 2011 15:52:21 +1100
From: Stephen Rothwell <sfr@...b.auug.org.au>
To: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
"H. Peter Anvin" <hpa@...or.com>,
Peter Zijlstra <peterz@...radead.org>
Cc: linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
"Rafael J. Wysocki" <rjw@...k.pl>, Len Brown <lenb@...nel.org>
Subject: linux-next: manual merge of the tip tree with the acpi tree
Hi all,
Today's linux-next merge of the tip tree got a conflict in
arch/x86/kernel/acpi/sleep.c between commit
a69fa313606a51cee99d802c14895330948f60c8 ("ACPI / PM: Drop
acpi_restore_state_mem()") from the acpi tree and commit
d1ee433539ea5963a8f946f3428b335d1c5fdb20 ("x86, trampoline: Use the
unified trampoline setup for ACPI wakeup") from the tip tree.
Just context (I think). I fixed it up (see below) and can carry the fix
as necessary.
--
Cheers,
Stephen Rothwell sfr@...b.auug.org.au
diff --cc arch/x86/kernel/acpi/sleep.c
index 5f1b747,4572c58..0000000
--- a/arch/x86/kernel/acpi/sleep.c
+++ b/arch/x86/kernel/acpi/sleep.c
@@@ -33,22 -29,17 +29,17 @@@ static char temp_stack[4096]
*
* Create an identity mapped page table and copy the wakeup routine to
* low memory.
- *
- * Note that this is too late to change acpi_wakeup_address.
*/
-int acpi_save_state_mem(void)
+int acpi_suspend_lowlevel(void)
{
struct wakeup_header *header;
+ /* address in low memory of the wakeup routine. */
+ char *acpi_realmode;
- if (!acpi_realmode) {
- printk(KERN_ERR "Could not allocate memory during boot, "
- "S3 disabled\n");
- return -ENOMEM;
- }
- memcpy((void *)acpi_realmode, &wakeup_code_start, WAKEUP_SIZE);
+ acpi_realmode = TRAMPOLINE_SYM(acpi_wakeup_code);
- header = (struct wakeup_header *)(acpi_realmode + HEADER_OFFSET);
- if (header->signature != 0x51ee1111) {
+ header = (struct wakeup_header *)(acpi_realmode + WAKEUP_HEADER_OFFSET);
+ if (header->signature != WAKEUP_HEADER_SIGNATURE) {
printk(KERN_ERR "wakeup header does not match\n");
return -EINVAL;
}
@@@ -111,45 -99,13 +100,6 @@@
return 0;
}
- /**
- * acpi_reserve_wakeup_memory - do _very_ early ACPI initialisation
- *
- * We allocate a page from the first 1MB of memory for the wakeup
- * routine for when we come back from a sleep state. The
- * runtime allocator allows specification of <16MB pages, but not
- * <1MB pages.
- */
- void __init acpi_reserve_wakeup_memory(void)
- {
- phys_addr_t mem;
-
- if ((&wakeup_code_end - &wakeup_code_start) > WAKEUP_SIZE) {
- printk(KERN_ERR
- "ACPI: Wakeup code way too big, S3 disabled.\n");
- return;
- }
-
- mem = memblock_find_in_range(0, 1<<20, WAKEUP_SIZE, PAGE_SIZE);
-
- if (mem == MEMBLOCK_ERROR) {
- printk(KERN_ERR "ACPI: Cannot allocate lowmem, S3 disabled.\n");
- return;
- }
- acpi_realmode = (unsigned long) phys_to_virt(mem);
- acpi_wakeup_address = mem;
- memblock_x86_reserve_range(mem, mem + WAKEUP_SIZE, "ACPI WAKEUP");
- }
-
- int __init acpi_configure_wakeup_memory(void)
- {
- if (acpi_realmode)
- set_memory_x(acpi_realmode, WAKEUP_SIZE >> PAGE_SHIFT);
-
- return 0;
- }
- arch_initcall(acpi_configure_wakeup_memory);
-
-
-/*
- * acpi_restore_state - undo effects of acpi_save_state_mem
- */
-void acpi_restore_state_mem(void)
-{
-}
-
static int __init acpi_sleep_setup(char *str)
{
while ((str != NULL) && (*str != '\0')) {
--
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