FreeBSD source tree https://cgit-dev.freebsd.org/src-test2/atom?h=release%2F7.2.0_cvs 2009-05-01T02:51:58Z 2009-05-01T02:51:58Z Ken Smith kensmith@FreeBSD.org 2009-05-01T02:51:58Z urn:sha1:b205d83df7763ca1f099bce5ac12a05862a626c4 Approved by: re (implicit) This commit was manufactured to restore the state of the 7.2-RELEASE image. 2009-03-25T17:22:15Z John Baldwin jhb@FreeBSD.org 2009-03-25T17:22:15Z urn:sha1:2b9e37e2b9fad40851fbce8db0f72ca460efb191 amd64 and i386. This fixes a bug were 32-bit binaries would run with a different floating point exception mask under FreeBSD/amd64 vs FreeBSD/i386. This commit also includes a few other minor changes to keep the code in sync with 8. Approved by: re (kib) 2009-03-22T20:46:37Z Alan Cox alc@FreeBSD.org 2009-03-22T20:46:37Z urn:sha1:183283f4667c81541be5b985d19bb8b470727dd1 Optimize free_pv_entry(); specifically, avoid repeated TAILQ_REMOVE()s. Update the pmap's resident page count when a page table page is freed in pmap_remove_pde() and pmap_remove_pages(). Update stale comments. The alternate address space mapping was eliminated when PAE support was added to i386. The direct mapping exists on amd64. 2009-02-26T15:59:22Z John Baldwin jhb@FreeBSD.org 2009-02-26T15:59:22Z urn:sha1:15826f991ff92f0afe64311327d5a2f38aae5cbf superpage reservation system to the machine-independent VM system as well as changes to the pmap code for amd64 and i386 to support superpages. Reviewed by: alc Tested by: ps 2009-01-21T21:28:21Z Jung-uk Kim jkim@FreeBSD.org 2009-01-21T21:28:21Z urn:sha1:af6896e0265f9738b67090fba6c3e770ede413e4 advertise it. 2009-01-21T20:53:36Z Jung-uk Kim jkim@FreeBSD.org 2009-01-21T20:53:36Z urn:sha1:f976241d35f9a7b047c36ad93420d9bd420d24cc invariant or it is forced by setting 'kern.timecounter.invariant_tsc' tunable to non-zero. 2009-01-21T20:16:11Z Jung-uk Kim jkim@FreeBSD.org 2009-01-21T20:16:11Z urn:sha1:5a9c4ac40845a5aec160c9ab2dde6c6e13bdeca6 2009-01-20T19:41:18Z John Baldwin jhb@FreeBSD.org 2009-01-20T19:41:18Z urn:sha1:9e657a658610f9a581a1f023abe3c0f2badf53e6 obsoleted by Peter's rewrite of the pv entry allocator. To avoid ABI breakage, the field in 'struct mdpage' has not been removed, but it has been renamed to 'pv_unused'. 2009-01-20T08:13:45Z Alan Cox alc@FreeBSD.org 2009-01-20T08:13:45Z urn:sha1:28f21bea0b110ee77daab4d0e138b48d9718c06c Increase the size of the kernel virtual address space to 6GB. Increase the ceiling on the kmem map's size to 3.6GB. Also, define the ceiling as a fraction of the kernel map's size rather than an absolute quantity. Thus, scaling of the kmem map's size will be automatic with changes to the kernel map's size. 2009-01-20T07:24:28Z Alan Cox alc@FreeBSD.org 2009-01-20T07:24:28Z urn:sha1:c770c55ddb51c0fe25ee4c1ee14fe0ec653babdf Prepare for a larger kernel virtual address space. Specifically, once KERNBASE and VM_MIN_KERNEL_ADDRESS are no longer the same, the physical memory allocated during bootstrap will be offset from the low-end of the kernel's page table. Change create_pagetables() and pmap_init() so that many fewer page table pages have to be preallocated by create_pagetables(). Eliminate pmap_growkernel()'s dependence on create_pagetables() preallocating page directory pages from VM_MIN_KERNEL_ADDRESS through the end of the kernel's bss. Specifically, the dependence was in pmap_growkernel()'s one- time initialization of kernel_vm_end, not in its main body. (I could not, however, resist the urge to optimize the main body.) Reduce the number of preallocated page directory pages to just those needed to support NKPT page table pages. (In fact, this allows me to revert a couple of my earlier changes to create_pagetables().) Fix lines that are too long in pmap_growkernel() by substituting shorter but equivalent expressions.