summaryrefslogtreecommitdiffstats
path: root/drivers/firmware
diff options
context:
space:
mode:
authorSai Praneeth <sai.praneeth.prakhya@intel.com>2018-03-12 08:44:56 +0000
committerIngo Molnar <mingo@kernel.org>2018-03-12 10:05:01 +0100
commit7e904a91bf6049071ef9d605a52f863ae774081d (patch)
tree9068d922b617ccbb46314242ae0c88b745952046 /drivers/firmware
parentb0599e2801df79d571c9e9a763b174b9f0edc558 (diff)
downloadlinux-7e904a91bf6049071ef9d605a52f863ae774081d.tar.bz2
efi: Use efi_mm in x86 as well as ARM
Presently, only ARM uses mm_struct to manage EFI page tables and EFI runtime region mappings. As this is the preferred approach, let's make this data structure common across architectures. Specially, for x86, using this data structure improves code maintainability and readability. Tested-by: Bhupesh Sharma <bhsharma@redhat.com> [ardb: don't #include the world to get a declaration of struct mm_struct] Signed-off-by: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Lee, Chun-Yi <jlee@suse.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Shankar <ravi.v.shankar@intel.com> Cc: Ricardo Neri <ricardo.neri@intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: linux-efi@vger.kernel.org Link: http://lkml.kernel.org/r/20180312084500.10764-2-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/firmware')
-rw-r--r--drivers/firmware/efi/arm-runtime.c9
-rw-r--r--drivers/firmware/efi/efi.c9
2 files changed, 9 insertions, 9 deletions
diff --git a/drivers/firmware/efi/arm-runtime.c b/drivers/firmware/efi/arm-runtime.c
index 13561aeb7396..5889cbea60b8 100644
--- a/drivers/firmware/efi/arm-runtime.c
+++ b/drivers/firmware/efi/arm-runtime.c
@@ -31,15 +31,6 @@
extern u64 efi_system_table;
-static struct mm_struct efi_mm = {
- .mm_rb = RB_ROOT,
- .mm_users = ATOMIC_INIT(2),
- .mm_count = ATOMIC_INIT(1),
- .mmap_sem = __RWSEM_INITIALIZER(efi_mm.mmap_sem),
- .page_table_lock = __SPIN_LOCK_UNLOCKED(efi_mm.page_table_lock),
- .mmlist = LIST_HEAD_INIT(efi_mm.mmlist),
-};
-
#ifdef CONFIG_ARM64_PTDUMP_DEBUGFS
#include <asm/ptdump.h>
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index 92b9e79e5da9..232f4915223b 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -75,6 +75,15 @@ static unsigned long *efi_tables[] = {
&efi.mem_attr_table,
};
+struct mm_struct efi_mm = {
+ .mm_rb = RB_ROOT,
+ .mm_users = ATOMIC_INIT(2),
+ .mm_count = ATOMIC_INIT(1),
+ .mmap_sem = __RWSEM_INITIALIZER(efi_mm.mmap_sem),
+ .page_table_lock = __SPIN_LOCK_UNLOCKED(efi_mm.page_table_lock),
+ .mmlist = LIST_HEAD_INIT(efi_mm.mmlist),
+};
+
static bool disable_runtime;
static int __init setup_noefi(char *arg)
{