o) Add a VM find-space option, VMFS_TLB_ALIGNED_SPACE, which searches the

   address space for an address as aligned by the new pmap_align_tlb()
   function, which is for constraints imposed by the TLB. [1]
o) Add a kmem_alloc_nofault_space() function, which acts like
   kmem_alloc_nofault() but allows the caller to specify which find-space
   option to use. [1]
o) Use kmem_alloc_nofault_space() with VMFS_TLB_ALIGNED_SPACE to allocate the
   kernel stack address on MIPS. [1]
o) Make pmap_align_tlb() on MIPS align addresses so that they do not start on
   an odd boundary within the TLB, so that they are suitable for insertion as
   wired entries and do not have to share a TLB entry with another mapping,
   assuming they are appropriately-sized.
o) Eliminate md_realstack now that the kstack will be appropriately-aligned on
   MIPS.
o) Increase the number of guard pages to 2 so that we retain the proper
   alignment of the kstack address.

Reviewed by:	[1] alc
X-MFC-after:	Making sure alc has not come up with a better interface.

1 files changed, 1 insertions, 2 deletions

diff --git a/sys/mips/include/proc.h b/sys/mips/include/proc.h
index 99dab78..0491b11 100644
--- a/sys/mips/include/proc.h
+++ b/sys/mips/include/proc.h
@@ -44,7 +44,7 @@
  */
 struct mdthread {
 	int	md_flags;		/* machine-dependent flags */
-	int	md_upte[KSTACK_PAGES - 1]; /* ptes for mapping u pcb */
+	int	md_upte[KSTACK_PAGES];	/* ptes for mapping u pcb */
 	int	md_ss_addr;		/* single step address for ptrace */
 	int	md_ss_instr;		/* single step instruction for ptrace */
 	register_t	md_saved_intr;
@@ -53,7 +53,6 @@ struct mdthread {
 	int	md_pc_ctrl;		/* performance counter control */
 	int	md_pc_count;		/* performance counter */
 	int	md_pc_spill;		/* performance counter spill */
-	vm_offset_t	md_realstack;
 	void	*md_tls;
 };