Commit Graph

3725 Commits

Author SHA1 Message Date
Nate Lawson
5a4d072c93 Minor style cleanups. 2003-08-28 16:30:31 +00:00
David E. O'Brien
a7b60ab26e Fix copyright comment & FBSDID style nits.
Requested by:	bde
2003-08-25 09:48:48 +00:00
Alan Cox
d08ffe8451 Eliminate the last (direct) uses of vm_page_lookup() on the pte object. 2003-08-24 08:07:06 +00:00
Peter Wemm
0dda1d3887 AMD64 mtrr driver. 2003-08-23 00:27:58 +00:00
Peter Wemm
46159d1fd6 Switch to using the emulator in the common compat area.
Still work-in-progress.
2003-08-23 00:04:53 +00:00
Peter Wemm
c639ca93f4 Initial sweep at dividing up the generic 32bit-on-64bit kernel support
from the ia32 specific stuff.  Some of this still needs to move to the MI
freebsd32 area, and some needs to move to the MD area.  This is still
work-in-progress.
2003-08-22 23:19:02 +00:00
Warner Losh
d2c5276d96 Prefer new location of pci include files (which have only been in the
tree for two or more years now), except in a few places where there's
code to be compatible with older versions of FreeBSD.
2003-08-22 07:39:05 +00:00
Peter Wemm
82914097e5 Regen 2003-08-21 03:48:50 +00:00
Peter Wemm
6b59055cb8 This is too funny for words. Swap syscalls 416 and 417 around. It works
better that way when sigaction() and sigreturn() do the right thing.
2003-08-21 03:48:05 +00:00
Alan Cox
2b12cfb461 - Lock the pte object when performing vm_page_grab().
- Insure that the page table page is zero filled before adding it
   to the page table.
2003-08-20 05:09:55 +00:00
Gordon Tetlow
df3d69c217 Fixup the ELF branding information to point to the new home of rtld. 2003-08-17 08:08:38 +00:00
Alan Cox
365b27ea29 In pmap_copy(), since we have the page table page's physical address
in hand, use PHYS_TO_VM_PAGE() rather than vm_page_lookup().
2003-08-17 04:48:21 +00:00
Marcel Moolenaar
710338e94f In vm_thread_swap{in|out}(), remove the alpha specific conditional
compilation and replace it with a call to cpu_thread_swap{in|out}().
This allows us to add similar code on ia64 without cluttering the
code even more.
2003-08-16 23:15:15 +00:00
Marcel Moolenaar
26502503e5 Further cleanup <machine/cpu.h> and <machine/md_var.h>: move the MI
prototypes of cpu_halt(), cpu_reset() and swi_vm() from md_var.h to
cpu.h. This affects db_command.c and kern_shutdown.c.

ia64: move all MD prototypes from cpu.h to md_var.h. This affects
madt.c, interrupt.c and mp_machdep.c. Remove is_physical_memory().
It's not used (vm_machdep.c).

alpha: the MD prototypes have been left in cpu.h with a comment
that they should be there. Moving them is left for later. It was
expected that the impact would be significant enough to be done in
a seperate commit.

powerpc: MD prototypes left in cpu.h. Comment added.

Suggested by: bde
Tested with: make universe (pc98 incomplete)
2003-08-16 16:57:57 +00:00
Alan Cox
6700fc865c Eliminate pmap_page_lookup() and its uses. Instead, use PHYS_TO_VM_PAGE()
to convert the pte's physical address into a vm page.

Reviewed by:	peter
2003-08-16 03:11:33 +00:00
John Baldwin
594dfbc391 - Fix a duplicated typo.
- Add a macro for the logical shift needed to extract an APIC ID from
  either from the local APIC ICR Hi register or the APIC ID registers of
  the local and IO APICs.
2003-08-15 15:23:13 +00:00
Warner Losh
06b4bf3e55 Expand inline the relevant parts of src/COPYRIGHT for Matt Dillon's
copyrighted files.

Approved by: Matt Dillon
2003-08-12 23:24:05 +00:00
Paul Saab
77c39e17fa Halted CPU's should not accumulate time.
Reviewed by:	jhb
2003-08-12 17:01:10 +00:00
Alan Cox
ba97fd8a78 Rename pmap_changebit() to pmap_clear_ptes() and remove the last
parameter.  The new name better reflects what the function does and
how it is used.  The last parameter was always FALSE.

Note: In theory, gcc would perform constant propagation and dead code
elimination to achieve the same effect as removing the last parameter,
which is always FALSE.  In practice, recent versions do not.  So, there
is little point in letting unused code pessimize execution.
2003-08-10 21:53:55 +00:00
Alan Cox
7fbff95c04 MFi386 1.422 & 1.423: lock page queues in pmap_insert_entry(). 2003-08-08 01:52:03 +00:00
Scott Long
477327b5c5 In _bus_dmamap_load_buffer(), only count the number of bounce pages needed if
they haven't been counted before.  This test was ommitted when bus_dmamap_load()
was merged into this function, and results in the pagesneeded field growing
without bounds when multiple deferrals happen.

Thanks to Paul Saab for beating his head against this for a few hours =-)
2003-08-04 23:40:35 +00:00
John Baldwin
3bdbd658f1 - Since td_critnest is now initialized in MI code, it doesn't have to be
set in cpu_critical_fork_exit() anymore.
- As far as I can tell, cpu_thread_link() has never been used, not even
  when it was originally added, so remove it.
2003-08-04 20:32:45 +00:00
Alan Cox
e53f32ace5 Use kmem_alloc_nofault() rather than kmem_alloc_pageable() in pmap_mapdev().
See revision 1.140 of kern/sys_pipe.c for a detailed rationale.

Submitted by:	tegge
2003-08-02 19:26:09 +00:00
Peter Wemm
59cc2230c6 Fix a dumbass mistake. I had the 'set' and 'get' reversed in the
fpsetround/fpgetround macro pairs.
2003-08-02 00:26:30 +00:00
Bosko Milekic
b053bc8407 Make sure that when the PV ENTRY zone is created in pmap, that it's
created not only with UMA_ZONE_VM but also with UMA_ZONE_NOFREE.  In
the i386 case in particular, the pmap code would hook a special
page allocation routine that allocated from kernel_map and not kmem_map,
and so when/if the pageout daemon drained the zones, it could actually
push out slabs from the PV ENTRY zone but call UMA's default page_free,
which resulted in pages allocated from kernel_map being freed to
kmem_map; bad.  kmem_free() ignores the return value of the
vm_map_delete and just returns.  I'm not sure what the exact
repercussions could be, but it doesn't look good.

In the PAE case on i386, we also set-up a zone in pmap, so be
conservative for now and make that zone also ZONE_NOFREE and
ZONE_VM.  Do this for the pmap zones for the other archs too,
although in some cases it may not be entirely necessarily.  We'd
rather be safe than sorry at this point.

Perhaps all UMA_ZONE_VM zones should by default be also
UMA_ZONE_NOFREE?

May fix some of silby's crashes on the PV ENTRY zone.
2003-07-31 03:39:51 +00:00
Peter Wemm
3950c40739 KSTACK_PAGES is a global option. 2003-07-31 01:27:18 +00:00
Peter Wemm
9fb1db7bc8 Cosmetic: fix disorder of opt_kstack_pages.h include. 2003-07-31 01:26:40 +00:00
David Xu
5a92cbc206 Use PSL_KERNEL as upcall thread's initial rflags, don't use
scratch user rflags.
2003-07-29 12:44:16 +00:00
Maxime Henrion
d5afecd068 - Introduce a new busdma flag BUS_DMA_ZERO to request for zero'ed
memory in bus_dmamem_alloc().  This is possible now that
  contigmalloc() supports the M_ZERO flag.
- Remove the locking of Giant around calls to contigmalloc() since
  contigmalloc() now grabs Giant itself.
2003-07-27 13:52:10 +00:00
David E. O'Brien
56ae44c5df Use __FBSDID().
Brought to you by:	a boring talk at Ottawa Linux Symposium
2003-07-25 21:19:19 +00:00
David E. O'Brien
12ea2cfe2e Use __FBSDID().
Brought to you by:	a boring talk at OLS
2003-07-25 21:10:19 +00:00
Alan Cox
059358675e MFi386 revision 1.416
Add vm object locking to pmap_prefault().

Note: powerpc and sparc64 do not implement this function.
2003-07-25 18:58:39 +00:00
David Xu
74bbb26b51 Align upcall stack top to odd times of 8. GCC accounts return address
in callee function for stack alignment.
2003-07-25 00:21:37 +00:00
David Xu
c3f8e34d6b Implement cpu_set_upcall and cpu_set_upcall_kse.
Reviewed by: peter
2003-07-24 08:52:44 +00:00
David Xu
81ebc68226 Set fault address to si_addr.
Reviewed by: peter
2003-07-24 08:51:22 +00:00
Peter Wemm
9e9e575b6a Make the breakpoint instruction trap gate available to users.
ptrace() needs this.

Submitted by:	Mark Kettenis <kettenis@chello.nl>
2003-07-23 23:20:20 +00:00
Peter Wemm
8b48b40d5e Set the %gs base to pcb_gsbase, not pcb_fsbase. Oops.
Discovered by:	davidxu
2003-07-23 23:17:15 +00:00
Alan Cox
3462150083 Annotate pmap_changebit() as __always_inline. This function was
written as a template that when inlined is specialized for the caller
through constant value propagation and dead code elimination.  Thus,
the specialized code that is generated for pmap_clear_reference() et
al. avoids several conditional branches inside of a loop.
2003-07-23 19:49:32 +00:00
John Baldwin
e47d4f0fc2 Use macros from apic.h to when writing to the ICR to send IPIs to startup
APs rather than magic numbers.

Tested by:	scottl
2003-07-23 19:04:28 +00:00
John Baldwin
55fb372edd Add a new macro APIC_ICRLO_RESV_MASK that contains all of the reserved
fields in the low 32 bits of the local APIC ICR register.  Use this macro
in place of APIC_RESV2_MASK when masking off existing bits from the ICR
when writing to it to send an IPI.

Tested by:	scottl
2003-07-23 18:59:38 +00:00
Peter Wemm
5b9f8ddbbd Go back to 64 bit precision for fadd/fsub/fsqrt etc. This is because on
AMD64, gcc (and the ABI) expects the x87 unit to be running in 80/64
mode (not 64/53) so that it can use it for 'long double' operations.  It
takes the expected precision differences into account when generating
code.
2003-07-22 06:50:34 +00:00
Peter Wemm
76537e43f5 Extend the machine/ieeefp.h that was inherited from i386 to support
the SSE mxcsr register as well.  Since gcc will intermix SSE2 and x87
FP code, the fpsetround() etc mode had better be the same.

There are hooks to enable these inlines to be instantiated inside libc
for non-gcc or C++ callers. (g++ doesn't like the inlines that tried
to extract an integer and convert it to an enum).
2003-07-22 06:44:54 +00:00
David Xu
20a2d71332 Rename thread_siginfo to cpu_thread_siginfo.
Suggested by: jhb
2003-07-15 00:11:04 +00:00
Mark Murray
c7b132c974 Protect lint(1) from a #error. 2003-07-10 18:05:02 +00:00
Peter Wemm
e95babf3a8 unifdef -DLAZY_SWITCH and start to tidy up the associated glue. 2003-07-10 01:02:59 +00:00
Peter Wemm
bf8ca114e2 Fix the VADDR() macros to use either KVADDR() or UVADDR(), depending
on the implied sign extension.  The single unified VADDR() macro was
not able to avoid sign extending the VM_MAXUSER_ADDRESS/USRSTACK values.
Be explicit about UVADDR() (positive address space) and KVADDR()
(kernel negative address space) to make mistakes show up more
spectacularly.

Increase user VM space from 1/2TB (512GB) to 128TB.
2003-07-09 23:04:23 +00:00
Peter Wemm
6486c09935 Fix up bogus index/offset/mask calculations in the allocpte and the
corresponding release code.  This was preventing the use of more than
1/2TB of user VM.  I also spent a week staring at this code only to
eventually find that I'd mistakenly typed a P as an R.
2003-07-09 22:59:45 +00:00
Peter Wemm
4afd44c16a Turn the 2MB page mappings that cover the kernel text+data+bss area back
on now that pmap_pte() can handle it.  I never actually ran into anything
that broke that I know of, but this was turned off as a precaution.
2003-07-09 22:55:00 +00:00
Peter Wemm
436e1f203f Have pmap_pte() on a 2MB mapped address return the 2MB pde itself
rather than a non-existing pte.  There is code elsewhere in i386/amd64
pmap that neglects to handle the large page cases because it knows that
it will see PG_PS in the returned "pte".
2003-07-09 22:53:45 +00:00
Alan Cox
90a7c7b671 In pmap_object_init_pt(), the pmap_invalidate_all() should be performed on
the caller-provided pmap, not the kernel_pmap.  Using the kernel_pmap
results in an unnecessary IPI for TLB shootdown on SMPs.

Reviewed by:	jake, peter
2003-07-08 19:40:35 +00:00