FreeBSD source tree https://cgit-dev.freebsd.org/src/atom?h=releng%2F5.3 2005-05-13T00:02:47Z 2005-05-13T00:02:47Z Jacques Vidrine nectar@FreeBSD.org 2005-05-13T00:02:47Z urn:sha1:0661094c6f13ad2d0765b2310577d52c20588805 Default off due to information disclosure on multi-user systems. Submitted by: cperciva Reviewed by: jhb Approved by: security-officer 2005-04-06T01:06:44Z Colin Percival cperciva@FreeBSD.org 2005-04-06T01:06:44Z urn:sha1:cfba578f829c4e411a77bbfce2d7062c288ee881 bitmap is set correctly. Patch from: peter Security: FreeBSD-SA-05:03.amd64 Approved by: so (cperciva) 2004-10-30T00:11:41Z Peter Wemm peter@FreeBSD.org 2004-10-30T00:11:41Z urn:sha1:a936ce1f0e47555862be9fc2dc3adc28bf520752 (I believe there will be a tag slide for this) Approved by: re (kensmith) 2004-10-16T08:43:07Z cvs2svn cvs2svn@FreeBSD.org 2004-10-16T08:43:07Z urn:sha1:5c5cd6c8e7b9cc9c39e56d04459ff9f4b2408bc1 2004-10-10T19:08:00Z Alan Cox alc@FreeBSD.org 2004-10-10T19:08:00Z urn:sha1:267b92e122a63846a24d14e0eb112e63f067abe7 amd64 and i386 - Remove unnecessary checks for curthread == NULL and pmap == NULL. - Release the page queues lock earlier in pmap_protect() and pmap_remove() in order to reduce contention. - Remove an outdated assertion from _pmap_allocpte(). - Simplify the reference counting of page table pages. Specifically, use the page table page's wired count rather than its hold count to contain the reference count. - Prevent the unexpected deallocation of a page table page while performing pmap_copy(). - Eliminate the unnecessary masking of the page offset bits from the physical address that is stored in the vm_page. - Undo revision 1.251. This change was a performance pessimizing work- around that is no longer required. Now, if the preexisting PTE is invalid, pmap_enter() does not call pmap_invalidate_page() to update the TLB(s). - Make pte_load_store() an atomic operation in all cases, not just i386 PAE. - Restructure pmap_enter() to prevent the loss of a page modified (PG_M) bit in a race between processors. (This restructuring assumes the newly atomic pte_load_store() for correct operation.) amd64 only - It is now an error to call pmap_unuse_pt without the paddr of the pde that contained the pte. - Remove an unused declaration. i386 only - Modify pmap_pte() to support its use on non-current, non-kernel pmaps without holding Giant. Approved by: re (scottl) 2004-10-10T18:54:30Z Peter Wemm peter@FreeBSD.org 2004-10-10T18:54:30Z urn:sha1:4633ee43ac840ec9981a7efb420f52b5c9eb5e04 Approved by: re 2004-10-09T03:00:17Z Scott Long scottl@FreeBSD.org 2004-10-09T03:00:17Z urn:sha1:43dd15c596f1528b92ef5972b894838f62c04798 Approved by: re 2004-09-24T18:42:06Z cvs2svn cvs2svn@FreeBSD.org 2004-09-24T18:42:06Z urn:sha1:66ca21b80722dbd686f0bd7845e2e1cb7b709c24 2004-09-10T00:04:18Z Scott Long scottl@FreeBSD.org 2004-09-10T00:04:18Z urn:sha1:69ba7f59694787612ef7782b368ccf60a6b8ab75 Approved by: re 2004-08-18T16:37:05Z cvs2svn cvs2svn@FreeBSD.org 2004-08-18T16:37:05Z urn:sha1:3c9270175d1bd3e7d0005e5f843a948f53ae77fb