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-rw-r--r--arch/x86/kernel/setup.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 49b596db5631..f7a132eb794d 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -40,6 +40,7 @@
#include <asm/kasan.h>
#include <asm/kaslr.h>
#include <asm/mce.h>
+#include <asm/memtype.h>
#include <asm/mtrr.h>
#include <asm/realmode.h>
#include <asm/olpc_ofw.h>
@@ -713,9 +714,6 @@ static void __init early_reserve_memory(void)
early_reserve_initrd();
- if (efi_enabled(EFI_BOOT))
- efi_memblock_x86_reserve_range();
-
memblock_x86_reserve_range_setup_data();
reserve_ibft_region();
@@ -890,6 +888,9 @@ void __init setup_arch(char **cmdline_p)
parse_early_param();
+ if (efi_enabled(EFI_BOOT))
+ efi_memblock_x86_reserve_range();
+
#ifdef CONFIG_MEMORY_HOTPLUG
/*
* Memory used by the kernel cannot be hot-removed because Linux
@@ -967,7 +968,11 @@ void __init setup_arch(char **cmdline_p)
max_pfn = e820__end_of_ram_pfn();
/* update e820 for memory not covered by WB MTRRs */
- mtrr_bp_init();
+ if (IS_ENABLED(CONFIG_MTRR))
+ mtrr_bp_init();
+ else
+ pat_disable("PAT support disabled because CONFIG_MTRR is disabled in the kernel.");
+
if (mtrr_trim_uncached_memory(max_pfn))
max_pfn = e820__end_of_ram_pfn();