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| author | Rafael J. Wysocki <rjw@sisk.pl> | 2008-12-08 00:50:22 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-08 13:49:45 +0100 |
| commit | 3e1e9002aa8b32bd4c95ac6c8fad376b7a8127fb (patch) | |
| tree | f9cee272743423033e78d283955aa7c493691a2d /arch/x86/kernel/head64.c | |
| parent | 218d11a8b071b23b76c484fd5f72a4fe3306801e (diff) | |
| download | blackbird-op-linux-3e1e9002aa8b32bd4c95ac6c8fad376b7a8127fb.tar.gz blackbird-op-linux-3e1e9002aa8b32bd4c95ac6c8fad376b7a8127fb.zip | |
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/head64.c')
| -rw-r--r-- | arch/x86/kernel/head64.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index d16084f90649..388e05a5fc17 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -24,6 +24,7 @@ #include <asm/kdebug.h> #include <asm/e820.h> #include <asm/bios_ebda.h> +#include <asm/trampoline.h> /* boot cpu pda */ static struct x8664_pda _boot_cpu_pda __read_mostly; @@ -120,6 +121,8 @@ void __init x86_64_start_reservations(char *real_mode_data) { copy_bootdata(__va(real_mode_data)); + reserve_trampoline_memory(); + reserve_early(__pa_symbol(&_text), __pa_symbol(&_end), "TEXT DATA BSS"); #ifdef CONFIG_BLK_DEV_INITRD |
