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authorMichal Marek <mmarek@suse.cz>2010-12-01 07:13:56 -0500
committerMichal Marek <mmarek@suse.cz>2010-12-01 07:13:56 -0500
commit307991055b0ce65d53dc1eb501c456c10eb36360 (patch)
tree71bb9263dc71344e5d7b97ca6d5cf223f1f1a856 /arch/tile/lib/memcpy_tile64.c
parent1198c6d45a1ef5f4f7fdfbf33ef7d270493ec575 (diff)
parent9b4320b77bab4031649c484da1c595f39c2e43cd (diff)
Merge branch 'kconfig_fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-next into kbuild/rc-fixes
Diffstat (limited to 'arch/tile/lib/memcpy_tile64.c')
-rw-r--r--arch/tile/lib/memcpy_tile64.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/arch/tile/lib/memcpy_tile64.c b/arch/tile/lib/memcpy_tile64.c
index dfedea7b266b..f7d4a6ad61e8 100644
--- a/arch/tile/lib/memcpy_tile64.c
+++ b/arch/tile/lib/memcpy_tile64.c
@@ -54,7 +54,7 @@ typedef unsigned long (*memcpy_t)(void *, const void *, unsigned long);
54 * we must run with interrupts disabled to avoid the risk of some 54 * we must run with interrupts disabled to avoid the risk of some
55 * other code seeing the incoherent data in our cache. (Recall that 55 * other code seeing the incoherent data in our cache. (Recall that
56 * our cache is indexed by PA, so even if the other code doesn't use 56 * our cache is indexed by PA, so even if the other code doesn't use
57 * our KM_MEMCPY virtual addresses, they'll still hit in cache using 57 * our kmap_atomic virtual addresses, they'll still hit in cache using
58 * the normal VAs that aren't supposed to hit in cache.) 58 * the normal VAs that aren't supposed to hit in cache.)
59 */ 59 */
60static void memcpy_multicache(void *dest, const void *source, 60static void memcpy_multicache(void *dest, const void *source,
@@ -64,6 +64,7 @@ static void memcpy_multicache(void *dest, const void *source,
64 unsigned long flags, newsrc, newdst; 64 unsigned long flags, newsrc, newdst;
65 pmd_t *pmdp; 65 pmd_t *pmdp;
66 pte_t *ptep; 66 pte_t *ptep;
67 int type0, type1;
67 int cpu = get_cpu(); 68 int cpu = get_cpu();
68 69
69 /* 70 /*
@@ -77,7 +78,8 @@ static void memcpy_multicache(void *dest, const void *source,
77 sim_allow_multiple_caching(1); 78 sim_allow_multiple_caching(1);
78 79
79 /* Set up the new dest mapping */ 80 /* Set up the new dest mapping */
80 idx = FIX_KMAP_BEGIN + (KM_TYPE_NR * cpu) + KM_MEMCPY0; 81 type0 = kmap_atomic_idx_push();
82 idx = FIX_KMAP_BEGIN + (KM_TYPE_NR * cpu) + type0;
81 newdst = __fix_to_virt(idx) + ((unsigned long)dest & (PAGE_SIZE-1)); 83 newdst = __fix_to_virt(idx) + ((unsigned long)dest & (PAGE_SIZE-1));
82 pmdp = pmd_offset(pud_offset(pgd_offset_k(newdst), newdst), newdst); 84 pmdp = pmd_offset(pud_offset(pgd_offset_k(newdst), newdst), newdst);
83 ptep = pte_offset_kernel(pmdp, newdst); 85 ptep = pte_offset_kernel(pmdp, newdst);
@@ -87,7 +89,8 @@ static void memcpy_multicache(void *dest, const void *source,
87 } 89 }
88 90
89 /* Set up the new source mapping */ 91 /* Set up the new source mapping */
90 idx += (KM_MEMCPY0 - KM_MEMCPY1); 92 type1 = kmap_atomic_idx_push();
93 idx += (type0 - type1);
91 src_pte = hv_pte_set_nc(src_pte); 94 src_pte = hv_pte_set_nc(src_pte);
92 src_pte = hv_pte_clear_writable(src_pte); /* be paranoid */ 95 src_pte = hv_pte_clear_writable(src_pte); /* be paranoid */
93 newsrc = __fix_to_virt(idx) + ((unsigned long)source & (PAGE_SIZE-1)); 96 newsrc = __fix_to_virt(idx) + ((unsigned long)source & (PAGE_SIZE-1));
@@ -119,6 +122,8 @@ static void memcpy_multicache(void *dest, const void *source,
119 * We're done: notify the simulator that all is back to normal, 122 * We're done: notify the simulator that all is back to normal,
120 * and re-enable interrupts and pre-emption. 123 * and re-enable interrupts and pre-emption.
121 */ 124 */
125 kmap_atomic_idx_pop();
126 kmap_atomic_idx_pop();
122 sim_allow_multiple_caching(0); 127 sim_allow_multiple_caching(0);
123 local_irq_restore(flags); 128 local_irq_restore(flags);
124 put_cpu(); 129 put_cpu();