提交 3c0b5663 编写于 作者: H H. Peter Anvin

Merge tag 'efi-urgent' into x86/urgent

 * Disable the new EFI 1:1 virtual mapping for SGI UV because using it
   causes a crash during boot - Borislav Petkov
Signed-off-by: NH. Peter Anvin <hpa@linux.intel.com>
......@@ -134,6 +134,7 @@ extern void efi_setup_page_tables(void);
extern void __init old_map_region(efi_memory_desc_t *md);
extern void __init runtime_code_page_mkexec(void);
extern void __init efi_runtime_mkexec(void);
extern void __init efi_apply_memmap_quirks(void);
struct efi_setup_data {
u64 fw_vendor;
......
......@@ -1239,14 +1239,8 @@ void __init setup_arch(char **cmdline_p)
register_refined_jiffies(CLOCK_TICK_RATE);
#ifdef CONFIG_EFI
/* Once setup is done above, unmap the EFI memory map on
* mismatched firmware/kernel archtectures since there is no
* support for runtime services.
*/
if (efi_enabled(EFI_BOOT) && !efi_is_native()) {
pr_info("efi: Setup done, disabling due to 32/64-bit mismatch\n");
efi_unmap_memmap();
}
if (efi_enabled(EFI_BOOT))
efi_apply_memmap_quirks();
#endif
}
......
......@@ -52,6 +52,7 @@
#include <asm/tlbflush.h>
#include <asm/x86_init.h>
#include <asm/rtc.h>
#include <asm/uv/uv.h>
#define EFI_DEBUG
......@@ -1210,3 +1211,22 @@ static int __init parse_efi_cmdline(char *str)
return 0;
}
early_param("efi", parse_efi_cmdline);
void __init efi_apply_memmap_quirks(void)
{
/*
* Once setup is done earlier, unmap the EFI memory map on mismatched
* firmware/kernel architectures since there is no support for runtime
* services.
*/
if (!efi_is_native()) {
pr_info("efi: Setup done, disabling due to 32/64-bit mismatch\n");
efi_unmap_memmap();
}
/*
* UV doesn't support the new EFI pagetable mapping yet.
*/
if (is_uv_system())
set_bit(EFI_OLD_MEMMAP, &x86_efi_facility);
}
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