Author: jhibbits
Date: Sun Mar 2 15:53:39 2014
New Revision: 262691
URL: http://svnweb.freebsd.org/changeset/base/262691
Log:
MFC r261258
Use a loop of dcbz, instead of calling bzero() to zero a page. This matches
what is done in mmu_oea64.c.
Modified:
stable/10/sys/powerpc/aim/mmu_oea.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/powerpc/aim/mmu_oea.c
==============================================================================
--- stable/10/sys/powerpc/aim/mmu_oea.c Sun Mar 2 13:26:08 2014
(r262690)
+++ stable/10/sys/powerpc/aim/mmu_oea.c Sun Mar 2 15:53:39 2014
(r262691)
@@ -1084,10 +1084,10 @@ moea_copy_pages(mmu_t mmu, vm_page_t *ma
void
moea_zero_page(mmu_t mmu, vm_page_t m)
{
- vm_offset_t pa = VM_PAGE_TO_PHYS(m);
- void *va = (void *)pa;
+ vm_offset_t off, pa = VM_PAGE_TO_PHYS(m);
- bzero(va, PAGE_SIZE);
+ for (off = 0; off < PAGE_SIZE; off += cacheline_size)
+ __asm __volatile("dcbz 0,%0" :: "r"(pa + off));
}
void
@@ -1102,10 +1102,8 @@ moea_zero_page_area(mmu_t mmu, vm_page_t
void
moea_zero_page_idle(mmu_t mmu, vm_page_t m)
{
- vm_offset_t pa = VM_PAGE_TO_PHYS(m);
- void *va = (void *)pa;
- bzero(va, PAGE_SIZE);
+ moea_zero_page(mmu, m);
}
/*
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