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authorYinghai Lu <yinghai@kernel.org>2010-04-01 23:32:43 +0200
committerH. Peter Anvin <hpa@zytor.com>2010-04-02 01:12:48 +0200
commit042be38e6106ed70b42d096ab4a1ed4187e510e6 (patch)
treefb3599873f28cf36dbc76b6cd0a84f3e89e5e8cb /arch/x86
parentx86, hpet: Fix bug in RTC emulation (diff)
downloadlinux-042be38e6106ed70b42d096ab4a1ed4187e510e6.tar.xz
linux-042be38e6106ed70b42d096ab4a1ed4187e510e6.zip
ibft, x86: Change reserve_ibft_region() to find_ibft_region()
This allows arch code could decide the way to reserve the ibft. And we should reserve ibft as early as possible, instead of BOOTMEM stage, in case the table is in RAM range and is not reserved by BIOS (this will often be the case.) Move to just after find_smp_config(). Also when CONFIG_NO_BOOTMEM=y, We will not have reserve_bootmem() anymore. -v2: fix typo about ibft pointed by Konrad Rzeszutek Wilk <konrad@darnok.org> Signed-off-by: Yinghai Lu <yinghai@kernel.org> LKML-Reference: <4BB510FB.80601@kernel.org> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Peter Jones <pjones@redhat.com> Cc: Konrad Rzeszutek Wilk <konrad@kernel.org> CC: Jan Beulich <jbeulich@novell.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kernel/setup.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index d76e18570c60..580e6b3dbdb8 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -608,6 +608,16 @@ static int __init setup_elfcorehdr(char *arg)
early_param("elfcorehdr", setup_elfcorehdr);
#endif
+static __init void reserve_ibft_region(void)
+{
+ unsigned long addr, size = 0;
+
+ addr = find_ibft_region(&size);
+
+ if (size)
+ reserve_early_overlap_ok(addr, addr + size, "ibft");
+}
+
#ifdef CONFIG_X86_RESERVE_LOW_64K
static int __init dmi_low_memory_corruption(const struct dmi_system_id *d)
{
@@ -910,6 +920,8 @@ void __init setup_arch(char **cmdline_p)
*/
find_smp_config();
+ reserve_ibft_region();
+
reserve_trampoline_memory();
#ifdef CONFIG_ACPI_SLEEP
@@ -977,8 +989,6 @@ void __init setup_arch(char **cmdline_p)
dma32_reserve_bootmem();
- reserve_ibft_region();
-
#ifdef CONFIG_KVM_CLOCK
kvmclock_init();
#endif