diff options
Diffstat (limited to 'sys/amd64')
-rw-r--r-- | sys/amd64/amd64/pmap.c | 22 | ||||
-rw-r--r-- | sys/amd64/include/pmap.h | 3 |
2 files changed, 15 insertions, 10 deletions
diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c index 8bd6f93..5ee64da 100644 --- a/sys/amd64/amd64/pmap.c +++ b/sys/amd64/amd64/pmap.c @@ -1710,16 +1710,20 @@ pmap_update_pde(pmap_t pmap, vm_offset_t va, pd_entry_t *pde, pd_entry_t newpde) #define PMAP_CLFLUSH_THRESHOLD (2 * 1024 * 1024) void -pmap_invalidate_cache_range(vm_offset_t sva, vm_offset_t eva) +pmap_invalidate_cache_range(vm_offset_t sva, vm_offset_t eva, boolean_t force) { - KASSERT((sva & PAGE_MASK) == 0, - ("pmap_invalidate_cache_range: sva not page-aligned")); - KASSERT((eva & PAGE_MASK) == 0, - ("pmap_invalidate_cache_range: eva not page-aligned")); + if (force) { + sva &= ~(vm_offset_t)cpu_clflush_line_size; + } else { + KASSERT((sva & PAGE_MASK) == 0, + ("pmap_invalidate_cache_range: sva not page-aligned")); + KASSERT((eva & PAGE_MASK) == 0, + ("pmap_invalidate_cache_range: eva not page-aligned")); + } - if (cpu_feature & CPUID_SS) - ; /* If "Self Snoop" is supported, do nothing. */ + if ((cpu_feature & CPUID_SS) != 0 && !force) + ; /* If "Self Snoop" is supported and allowed, do nothing. */ else if ((cpu_feature & CPUID_CLFSH) != 0 && eva - sva < PMAP_CLFLUSH_THRESHOLD) { @@ -6222,7 +6226,7 @@ pmap_mapdev_attr(vm_paddr_t pa, vm_size_t size, int mode) for (tmpsize = 0; tmpsize < size; tmpsize += PAGE_SIZE) pmap_kenter_attr(va + tmpsize, pa + tmpsize, mode); pmap_invalidate_range(kernel_pmap, va, va + tmpsize); - pmap_invalidate_cache_range(va, va + tmpsize); + pmap_invalidate_cache_range(va, va + tmpsize, FALSE); return ((void *)(va + offset)); } @@ -6558,7 +6562,7 @@ pmap_change_attr_locked(vm_offset_t va, vm_size_t size, int mode) */ if (changed) { pmap_invalidate_range(kernel_pmap, base, tmpva); - pmap_invalidate_cache_range(base, tmpva); + pmap_invalidate_cache_range(base, tmpva, FALSE); } return (error); } diff --git a/sys/amd64/include/pmap.h b/sys/amd64/include/pmap.h index e83e07e..ebf32c6 100644 --- a/sys/amd64/include/pmap.h +++ b/sys/amd64/include/pmap.h @@ -394,7 +394,8 @@ void pmap_invalidate_range(pmap_t, vm_offset_t, vm_offset_t); void pmap_invalidate_all(pmap_t); void pmap_invalidate_cache(void); void pmap_invalidate_cache_pages(vm_page_t *pages, int count); -void pmap_invalidate_cache_range(vm_offset_t sva, vm_offset_t eva); +void pmap_invalidate_cache_range(vm_offset_t sva, vm_offset_t eva, + boolean_t force); void pmap_get_mapping(pmap_t pmap, vm_offset_t va, uint64_t *ptr, int *num); #endif /* _KERNEL */ |