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Make sure we do not call _arm_bzero() or _arm_memcpy() if the size is not at

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least the minimum asked by the driver.

Approved by:	re (blanket)
This commit is contained in:
Olivier Houchard 2007-09-22 22:47:48 +00:00
parent 4c865ababe
commit afecb69ae1
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=172300
1 changed files with 3 additions and 3 deletions
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6
sys/arm/arm/pmap.c
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@ -4073,7 +4073,7 @@ pmap_zero_page_generic(vm_paddr_t phys, int off, int size)
panic("pmap_zero_page: page has mappings");
#endif
if (_arm_bzero &&
if (_arm_bzero && size >= _min_bzero_size &&
_arm_bzero((void *)(phys + off), size, IS_PHYSICAL) == 0)
return;
@ -4114,7 +4114,7 @@ pmap_zero_page_generic(vm_paddr_t phys, int off, int size)
void
pmap_zero_page_xscale(vm_paddr_t phys, int off, int size)
{
if (_arm_bzero &&
if (_arm_bzero && size >= _min_bzero_size &&
_arm_bzero((void *)(phys + off), size, IS_PHYSICAL) == 0)
return;
mtx_lock(&cmtx);
@ -4428,7 +4428,7 @@ pmap_copy_page(vm_page_t src, vm_page_t dst)
#endif
cpu_dcache_wbinv_all();
if (_arm_memcpy &&
if (_arm_memcpy && PAGE_SIZE >= _min_memcpy_size &&
_arm_memcpy((void *)VM_PAGE_TO_PHYS(dst),
(void *)VM_PAGE_TO_PHYS(src), PAGE_SIZE, IS_PHYSICAL) == 0)
return;