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| author |   Dave Hansen <dave.hansen@linux.intel.com> | 2020-01-23 10:41:20 -0800 |
|---|---|---|
| committer |   Dave Hansen <dave.hansen@intel.com> | 2020-01-23 10:41:20 -0800 |
| commit | 45fc24e89b7cc2e227b2f03d99dda0a2204bf383 (patch) | |
| tree | 913d1b90a3a490d3290e93d38e28ed8ddae2896a /arch/x86/kernel/sys_x86_64.c | |
| parent | mm: remove arch_bprm_mm_init() hook (diff) | |
| download | linux-dev-45fc24e89b7cc2e227b2f03d99dda0a2204bf383.tar.xz linux-dev-45fc24e89b7cc2e227b2f03d99dda0a2204bf383.zip | |
x86/mpx: remove MPX from arch/x86
From: Dave Hansen <dave.hansen@linux.intel.com>
MPX is being removed from the kernel due to a lack of support
in the toolchain going forward (gcc).
This removes all the remaining (dead at this point) MPX handling
code remaining in the tree. The only remaining code is the XSAVE
support for MPX state which is currently needd for KVM to handle
VMs which might use MPX.
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: x86@kernel.org
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Diffstat (limited to 'arch/x86/kernel/sys_x86_64.c')
| -rw-r--r-- | arch/x86/kernel/sys_x86_64.c | 9 |
1 files changed, 0 insertions, 9 deletions
diff --git a/arch/x86/kernel/sys_x86_64.c b/arch/x86/kernel/sys_x86_64.c index f7476ce23b6e..ca3c11a17b5a 100644 --- a/arch/x86/kernel/sys_x86_64.c +++ b/arch/x86/kernel/sys_x86_64.c @@ -22,7 +22,6 @@ #include <asm/elf.h> #include <asm/ia32.h> #include <asm/syscalls.h> -#include <asm/mpx.h> /* * Align a virtual address to avoid aliasing in the I$ on AMD F15h. @@ -137,10 +136,6 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr, struct vm_unmapped_area_info info; unsigned long begin, end; - addr = mpx_unmapped_area_check(addr, len, flags); - if (IS_ERR_VALUE(addr)) - return addr; - if (flags & MAP_FIXED) return addr; @@ -180,10 +175,6 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, unsigned long addr = addr0; struct vm_unmapped_area_info info; - addr = mpx_unmapped_area_check(addr, len, flags); - if (IS_ERR_VALUE(addr)) - return addr; - /* requested length too big for entire address space */ if (len > TASK_SIZE) return -ENOMEM; |