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| author |   Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
|---|---|---|
| committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
| commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
| tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/s390/include/asm/mmu.h | |
| parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) | |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/s390/include/asm/mmu.h')
| -rw-r--r-- | kernel/arch/s390/include/asm/mmu.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/kernel/arch/s390/include/asm/mmu.h b/kernel/arch/s390/include/asm/mmu.h new file mode 100644 index 000000000..d29ad9545 --- /dev/null +++ b/kernel/arch/s390/include/asm/mmu.h @@ -0,0 +1,44 @@ +#ifndef __MMU_H +#define __MMU_H + +#include <linux/cpumask.h> +#include <linux/errno.h> + +typedef struct { + cpumask_t cpu_attach_mask; + atomic_t attach_count; + unsigned int flush_mm; + spinlock_t list_lock; + struct list_head pgtable_list; + struct list_head gmap_list; + unsigned long asce_bits; + unsigned long asce_limit; + unsigned long vdso_base; + /* The mmu context allocates 4K page tables. */ + unsigned int alloc_pgste:1; + /* The mmu context uses extended page tables. */ + unsigned int has_pgste:1; + /* The mmu context uses storage keys. */ + unsigned int use_skey:1; +} mm_context_t; + +#define INIT_MM_CONTEXT(name) \ + .context.list_lock = __SPIN_LOCK_UNLOCKED(name.context.list_lock), \ + .context.pgtable_list = LIST_HEAD_INIT(name.context.pgtable_list), \ + .context.gmap_list = LIST_HEAD_INIT(name.context.gmap_list), + +static inline int tprot(unsigned long addr) +{ + int rc = -EFAULT; + + asm volatile( + " tprot 0(%1),0\n" + "0: ipm %0\n" + " srl %0,28\n" + "1:\n" + EX_TABLE(0b,1b) + : "+d" (rc) : "a" (addr) : "cc"); + return rc; +} + +#endif |