diff options
| -rw-r--r-- | sys/mips/mips/uio_machdep.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/sys/mips/mips/uio_machdep.c b/sys/mips/mips/uio_machdep.c index 10deff6..4621c5a 100644 --- a/sys/mips/mips/uio_machdep.c +++ b/sys/mips/mips/uio_machdep.c @@ -51,6 +51,8 @@ __FBSDID("$FreeBSD$"); #include <vm/vm_page.h> #include <vm/vm_param.h> +#include <machine/cache.h> + /* * Implement uiomove(9) from physical memory using a combination * of the direct mapping and sf_bufs to reduce the creation and @@ -91,8 +93,14 @@ uiomove_fromphys(vm_page_t ma[], vm_offset_t offset, int n, struct uio *uio) m = ma[offset >> PAGE_SHIFT]; pa = VM_PAGE_TO_PHYS(m); if (pa < MIPS_KSEG0_LARGEST_PHYS) { - cp = (char *)MIPS_PHYS_TO_KSEG0(pa); sf = NULL; + cp = (char *)MIPS_PHYS_TO_KSEG0(pa) + page_offset; + /* + * flush all mappings to this page, KSEG0 address first + * in order to get it overwritten by correct data + */ + mips_dcache_wbinv_range((vm_offset_t)cp, cnt); + pmap_flush_pvcache(m); } else { sf = sf_buf_alloc(m, 0); cp = (char *)sf_buf_kva(sf) + page_offset; @@ -122,6 +130,8 @@ uiomove_fromphys(vm_page_t ma[], vm_offset_t offset, int n, struct uio *uio) } if (sf != NULL) sf_buf_free(sf); + else + mips_dcache_wbinv_range((vm_offset_t)cp, cnt); iov->iov_base = (char *)iov->iov_base + cnt; iov->iov_len -= cnt; uio->uio_resid -= cnt; |
