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authorHuang, Ying <ying.huang@intel.com>2008-01-30 13:34:10 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 13:34:10 +0100
commita3828064be4ed8e95907d3943e7af13cb709694d (patch)
treeb5458f61681a0bf4c3640f28c51ccd0a24c0c6b5 /arch
parentbed23c67fe077b4d66cb3329263d7cfa33b3fd67 (diff)
downloadop-kernel-dev-a3828064be4ed8e95907d3943e7af13cb709694d.zip
op-kernel-dev-a3828064be4ed8e95907d3943e7af13cb709694d.tar.gz
x86: fixes some bugs about EFI memory map handling
This patch fixes some bugs of EFI memory handing code. - On x86_64, it is possible that EFI memory map can not be mapped via identity map, so efi_map_memmap is removed, just use early_ioremap. - On i386, the EFI memory map mapping take effect cross paging_init, so it is not necessary to use efi_map_memmap. - EFI memory map is unmapped in efi_enter_virtual_mode to avoid early_ioremap leak. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/efi.c2
-rw-r--r--arch/x86/kernel/efi_32.c15
-rw-r--r--arch/x86/kernel/efi_64.c9
-rw-r--r--arch/x86/kernel/setup_32.c2
-rw-r--r--arch/x86/kernel/setup_64.c4
5 files changed, 3 insertions, 29 deletions
diff --git a/arch/x86/kernel/efi.c b/arch/x86/kernel/efi.c
index 174b067..1411324 100644
--- a/arch/x86/kernel/efi.c
+++ b/arch/x86/kernel/efi.c
@@ -474,6 +474,8 @@ void __init efi_enter_virtual_mode(void)
efi.reset_system = virt_efi_reset_system;
efi.set_virtual_address_map = virt_efi_set_virtual_address_map;
runtime_code_page_mkexec();
+ early_iounmap(memmap.map, memmap.nr_map * memmap.desc_size);
+ memmap.map = NULL;
}
/*
diff --git a/arch/x86/kernel/efi_32.c b/arch/x86/kernel/efi_32.c
index 114b896..cb91f98 100644
--- a/arch/x86/kernel/efi_32.c
+++ b/arch/x86/kernel/efi_32.c
@@ -109,18 +109,3 @@ void efi_call_phys_epilog(void)
local_irq_restore(efi_rt_eflags);
}
-
-/*
- * We need to map the EFI memory map again after paging_init().
- */
-void __init efi_map_memmap(void)
-{
- memmap.map = NULL;
-
- memmap.map = early_ioremap((unsigned long) memmap.phys_map,
- (memmap.nr_map * memmap.desc_size));
- if (memmap.map == NULL)
- printk(KERN_ERR "Could not remap the EFI memmap!\n");
-
- memmap.map_end = memmap.map + (memmap.nr_map * memmap.desc_size);
-}
diff --git a/arch/x86/kernel/efi_64.c b/arch/x86/kernel/efi_64.c
index 9f8a755..4b73992 100644
--- a/arch/x86/kernel/efi_64.c
+++ b/arch/x86/kernel/efi_64.c
@@ -103,15 +103,6 @@ void __init efi_call_phys_epilog(void)
local_irq_restore(efi_flags);
}
-/*
- * We need to map the EFI memory map again after init_memory_mapping().
- */
-void __init efi_map_memmap(void)
-{
- memmap.map = __va(memmap.phys_map);
- memmap.map_end = memmap.map + (memmap.nr_map * memmap.desc_size);
-}
-
void __init efi_reserve_bootmem(void)
{
reserve_bootmem_generic((unsigned long)memmap.phys_map,
diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c
index c038b09..9c0ef49 100644
--- a/arch/x86/kernel/setup_32.c
+++ b/arch/x86/kernel/setup_32.c
@@ -808,8 +808,6 @@ void __init setup_arch(char **cmdline_p)
#ifdef CONFIG_X86_GENERICARCH
generic_apic_probe();
#endif
- if (efi_enabled)
- efi_map_memmap();
#ifdef CONFIG_ACPI
/*
diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c
index 4ccad18..697533e 100644
--- a/arch/x86/kernel/setup_64.c
+++ b/arch/x86/kernel/setup_64.c
@@ -378,10 +378,8 @@ void __init setup_arch(char **cmdline_p)
acpi_reserve_bootmem();
#endif
- if (efi_enabled) {
- efi_map_memmap();
+ if (efi_enabled)
efi_reserve_bootmem();
- }
/*
* Find and reserve possible boot-time SMP configuration:
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