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When "force" is specified to pmap_invalidate_cache_range(), the given

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start address is not required to be page aligned.  However, the loop
within pmap_invalidate_cache_range() that performs the actual cache
line invalidations requires that the starting address be truncated to
a multiple of the cache line size.  This change corrects an error in
that truncation.

Submitted by:	Brett Gutstein <bgutstein@rice.edu>
Reviewed by:	kib
MFC after:	1 week
This commit is contained in:
alc 2017-07-01 16:42:09 +00:00
parent 76aa4645a3
commit bf2a2bba1b
2 changed files with 2 additions and 2 deletions
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2
sys/amd64/amd64/pmap.c
View File

@ -1868,7 +1868,7 @@ pmap_invalidate_cache_range(vm_offset_t sva, vm_offset_t eva, boolean_t force)
{
if (force) {
sva &= ~(vm_offset_t)cpu_clflush_line_size;
sva &= ~(vm_offset_t)(cpu_clflush_line_size - 1);
} else {
KASSERT((sva & PAGE_MASK) == 0,
("pmap_invalidate_cache_range: sva not page-aligned"));

2
sys/i386/i386/pmap.c
View File

@ -1289,7 +1289,7 @@ pmap_invalidate_cache_range(vm_offset_t sva, vm_offset_t eva, boolean_t force)
{
if (force) {
sva &= ~(vm_offset_t)cpu_clflush_line_size;
sva &= ~(vm_offset_t)(cpu_clflush_line_size - 1);
} else {
KASSERT((sva & PAGE_MASK) == 0,
("pmap_invalidate_cache_range: sva not page-aligned"));