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zynq: use KADDR() for kmap() if we can avoiding the mapping

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This commit is contained in:
cinap_lenrek 2015-06-18 12:16:54 +02:00
parent 0dab8869ad
commit 1bf5b4ad4e
1 changed files with 4 additions and 0 deletions
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4
sys/src/9/zynq/mmu.c
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@ -286,6 +286,8 @@ kmap(Page *page)
ulong *e, *v;
int i, s;
if(cankaddr(page->pa))
return (KMap*)KADDR(page->pa);
if(up == nil)
panic("kmap: up=0 pc=%#.8lux", getcallerpc(&page));
if(up->l1 == nil)
@ -329,6 +331,8 @@ kunmap(KMap *arg)
ulong *e;
va = (uintptr) arg;
if(va >= KZERO)
return;
if(up->l1 == nil || (up->l1->va[L1X(KMAP)] & 3) == 0)
panic("kunmap: no kmaps");
if(va < KMAP || va >= KMAP + NKMAP * BY2PG)