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author | Thomas Gleixner <tglx@linutronix.de> | 2018-01-04 13:01:40 +0100 |
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committer | Thomas Gleixner <tglx@linutronix.de> | 2018-01-04 23:04:57 +0100 |
commit | f2078904810373211fb15f91888fba14c01a4acc (patch) | |
tree | 3e0cb3a579766be68d3ea9d8309b5b36a1f2c9d8 /arch/x86/include/asm/pgtable_64_types.h | |
parent | f5a40711fa58f1c109165a4fec6078bf2dfd2bdc (diff) | |
download | linux-stable-f2078904810373211fb15f91888fba14c01a4acc.tar.gz linux-stable-f2078904810373211fb15f91888fba14c01a4acc.tar.bz2 linux-stable-f2078904810373211fb15f91888fba14c01a4acc.zip |
x86/mm: Map cpu_entry_area at the same place on 4/5 level
There is no reason for 4 and 5 level pagetables to have a different
layout. It just makes determining vaddr_end for KASLR harder than
necessary.
Fixes: 92a0f81d8957 ("x86/cpu_entry_area: Move it out of the fixmap")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Benjamin Gilbert <benjamin.gilbert@coreos.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: stable <stable@vger.kernel.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Garnier <thgarnie@google.com>,
Cc: Alexander Kuleshov <kuleshovmail@gmail.com>
Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1801041320360.1771@nanos
Diffstat (limited to 'arch/x86/include/asm/pgtable_64_types.h')
-rw-r--r-- | arch/x86/include/asm/pgtable_64_types.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/include/asm/pgtable_64_types.h b/arch/x86/include/asm/pgtable_64_types.h index 6233e5595389..61b4b60bdc13 100644 --- a/arch/x86/include/asm/pgtable_64_types.h +++ b/arch/x86/include/asm/pgtable_64_types.h @@ -88,7 +88,7 @@ typedef struct { pteval_t pte; } pte_t; # define VMALLOC_SIZE_TB _AC(32, UL) # define __VMALLOC_BASE _AC(0xffffc90000000000, UL) # define __VMEMMAP_BASE _AC(0xffffea0000000000, UL) -# define LDT_PGD_ENTRY _AC(-4, UL) +# define LDT_PGD_ENTRY _AC(-3, UL) # define LDT_BASE_ADDR (LDT_PGD_ENTRY << PGDIR_SHIFT) #endif @@ -110,7 +110,7 @@ typedef struct { pteval_t pte; } pte_t; #define ESPFIX_PGD_ENTRY _AC(-2, UL) #define ESPFIX_BASE_ADDR (ESPFIX_PGD_ENTRY << P4D_SHIFT) -#define CPU_ENTRY_AREA_PGD _AC(-3, UL) +#define CPU_ENTRY_AREA_PGD _AC(-4, UL) #define CPU_ENTRY_AREA_BASE (CPU_ENTRY_AREA_PGD << P4D_SHIFT) #define EFI_VA_START ( -4 * (_AC(1, UL) << 30)) |