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SubjectRe: [PATCH] fix DMI for EFI
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please use git log -p arch/x86/kernel/setup.c to check the history...

YH


commit 2216d199b1430d1c0affb1498a9ebdbd9c0de439
Author: Yinghai Lu <yhlu.kernel@gmail.com>
Date: Mon Sep 22 02:52:26 2008 -0700

x86: fix CONFIG_X86_RESERVE_LOW_64K=y

The bad_bios_dmi_table() quirk never triggered because we do DMI setup
too late. Move it a bit earlier.

Also change the CONFIG_X86_RESERVE_LOW_64K quirk to operate on the e820
table directly instead of messing with early reservations - this handles
overlaps (which do occur in this low range of RAM) more gracefully.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 161f1b3..d29951c 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -735,7 +735,8 @@ static int __init dmi_low_memory_corruption(const
struct dmi_system_id *d)
"%s detected: BIOS may corrupt low RAM, working it around.\n",
d->ident);

- reserve_early_overlap_ok(0x0, 0x10000, "BIOS quirk");
+ e820_update_range(0, 0x10000, E820_RAM, E820_RESERVED);
+ sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);

return 0;
}
@@ -784,8 +785,6 @@ void __init setup_arch(char **cmdline_p)
printk(KERN_INFO "Command line: %s\n", boot_command_line);
#endif

- dmi_check_system(bad_bios_dmi_table);
-
early_cpu_init();
early_ioremap_init();

@@ -880,6 +879,10 @@ void __init setup_arch(char **cmdline_p)

finish_e820_parsing();

+ dmi_scan_machine();
+
+ dmi_check_system(bad_bios_dmi_table);
+
#ifdef CONFIG_X86_32
probe_roms();
#endif
@@ -967,8 +970,6 @@ void __init setup_arch(char **cmdline_p)
vsmp_init();
#endif

- dmi_scan_machine();
-
io_delay_init();

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