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| author | alc <alc@FreeBSD.org> | 2006-08-01 19:06:06 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 2006-08-01 19:06:06 +0000 |
| commit | a152234cf9a52766984ecb9a96cc1e5740ae9d78 (patch) | |
| tree | 7cf5203513490cb91de50813dfb5015b4f873256 /sys/arm | |
| parent | a2e0f77d8f100b139a19a4fc8ecece7356b6afdc (diff) | |
| download | FreeBSD-src-a152234cf9a52766984ecb9a96cc1e5740ae9d78.zip FreeBSD-src-a152234cf9a52766984ecb9a96cc1e5740ae9d78.tar.gz | |
Complete the transition from pmap_page_protect() to pmap_remove_write().
Originally, I had adopted sparc64's name, pmap_clear_write(), for the
function that is now pmap_remove_write(). However, this function is more
like pmap_remove_all() than like pmap_clear_modify() or
pmap_clear_reference(), hence, the name change.
The higher-level rationale behind this change is described in
src/sys/amd64/amd64/pmap.c revision 1.567. The short version is that I'm
trying to clean up and fix our support for execute access.
Reviewed by: marcel@ (ia64)
Diffstat (limited to 'sys/arm')
| -rw-r--r-- | sys/arm/arm/pmap.c | 28 |
1 files changed, 1 insertions, 27 deletions
diff --git a/sys/arm/arm/pmap.c b/sys/arm/arm/pmap.c index 9d8f4af..1e5be9c 100644 --- a/sys/arm/arm/pmap.c +++ b/sys/arm/arm/pmap.c @@ -2759,32 +2759,6 @@ pmap_growkernel(vm_offset_t addr) /* - * pmap_page_protect: - * - * Lower the permission for all mappings to a given page. - */ -void -pmap_page_protect(vm_page_t m, vm_prot_t prot) -{ - switch(prot) { - case VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE: - case VM_PROT_READ|VM_PROT_WRITE: - return; - - case VM_PROT_READ: - case VM_PROT_READ|VM_PROT_EXECUTE: - pmap_clearbit(m, PVF_WRITE); - break; - - default: - pmap_remove_all(m); - break; - } - -} - - -/* * Remove all pages from specified address space * this aids process exit speeds. Also, this code * is special cased for current process only, but @@ -4464,7 +4438,7 @@ pmap_clear_reference(vm_page_t m) * Clear the write and modified bits in each of the given page's mappings. */ void -pmap_clear_write(vm_page_t m) +pmap_remove_write(vm_page_t m) { if (m->md.pvh_attrs & PVF_WRITE) |
