CVS log for src/sys/arch/sparc64/include/vmparam.h

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Pull up following revision(s) (requested by hgutch in ticket #1588):

	sys/arch/sparc64/include/vmparam.h: revision 1.43

Avoid using (1<<64)-1 for VM_MAX{,USER}_ADDRESS as rounding that up to
the next page boundary gives 0 and instead make the VA space end one
page earlier.

Fixes PR sparc64/57219.

Pull up following revision(s) (requested by hgutch in ticket #71):

	sys/arch/sparc64/include/vmparam.h: revision 1.43

Avoid using (1<<64)-1 for VM_MAX{,USER}_ADDRESS as rounding that up to
the next page boundary gives 0 and instead make the VA space end one
page earlier.

Fixes PR sparc64/57219.

Avoid using (1<<64)-1 for VM_MAX{,USER}_ADDRESS as rounding that up to
the next page boundary gives 0 and instead make the VA space end one
page earlier.

Fixes PR sparc64/57219.

Sync with HEAD.

Say what 1UL<<39 (MAXDSIZ value) is in the comment.

GC unused MAXTSIZ32

Merge changes from current as of 20200406

Sync with head.

Bump UBC defaults on sparc64 & aarch64, which already have a large pager_map.

Sync with HEAD

Sync with HEAD

Resolve a couple of conflicts (result of the uimin/uimax changes)

Rename min/max -> uimin/uimax for better honesty.

These functions are defined on unsigned int.  The generic name
min/max should not silently truncate to 32 bits on 64-bit systems.
This is purely a name change -- no functional change intended.

HOWEVER!  Some subsystems have

	#define min(a, b)	((a) < (b) ? (a) : (b))
	#define max(a, b)	((a) > (b) ? (a) : (b))

even though our standard name for that is MIN/MAX.  Although these
may invite multiple evaluation bugs, these do _not_ cause integer
truncation.

To avoid `fixing' these cases, I first changed the name in libkern,
and then compile-tested every file where min/max occurred in order to
confirm that it failed -- and thus confirm that nothing shadowed
min/max -- before changing it.

I have left a handful of bootloaders that are too annoying to
compile-test, and some dead code:

cobalt ews4800mips hp300 hppa ia64 luna68k vax
acorn32/if_ie.c (not included in any kernels)
macppc/if_gm.c (superseded by gem(4))

It should be easy to fix the fallout once identified -- this way of
doing things fails safe, and the goal here, after all, is to _avoid_
silent integer truncations, not introduce them.

Maybe one day we can reintroduce min/max as type-generic things that
never silently truncate.  But we should avoid doing that for a while,
so that existing code has a chance to be detected by the compiler for
conversion to uimin/uimax without changing the semantics until we can
properly audit it all.  (Who knows, maybe in some cases integer
truncation is actually intended!)

Pull up following revision(s) (requested by mrg in ticket #733):

	sys/arch/amd64/include/vmparam.h: revision 1.44
	sys/arch/amd64/include/vmparam.h: revision 1.45
	sys/arch/sparc64/include/vmparam.h: revision 1.38

bump PAGER_MAP_DEFAULT_SIZE to 512MB.  this should allow more
concurrent IOs to be possible, and i'm unable to see pager_map
contention any more.

other larger platforms should probably do this too.
ok chs@.

Remove superfluous word in comment. Noted by Geoff Wing.

Bump PAGER_MAP_DEFAULT_SIZE to 512 MB (like amd64 recently did).

update from HEAD

Bump PAGER_MAP_DEFAULT_SIZE to 512 MB (like amd64 recently did).

Sync with HEAD

Fix comment

Sync with HEAD (as of 26th Dec)

Reduce the "MAXDSIZ" limit for bottom-up-VA (i.e. old binaries) processes
to the old limit of 1 GB. Some old binaries can not deal with more.

PR 32999: adjust VM parameters for 64 bit kernel/userlands.
Limit old binaries (i.e. processes not using topdown VA layout) to 2 GB
data size.
Use the same limits as native sparc for netbsd32 emulation - we need to
revisit this, but currently automatic test runs in this environment
fail big time, so there is no easy way to verify any changes.

Rebase to HEAD as of a few days ago.

Rebase.

sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs.  ("Protocol error: too many arguments")

sync with head

Implement and enable TOPDOWN_VM. From Chuck Silvers.

resync with head

sync with head

Rearange VA layout for 64 bit kernels, as suggested by Lars Heidieker:
move the dynamic kernel memory past 4GB (basically unlimiting it) and
use the now freed address range past kernel data upto 2GB for modules.

sync with head

Sync with HEAD.

Move struct vm_page_md definition from vmparam.h to pmap.h, because
it's used only by pmap.  vmparam.h has definitions for wider
audience.

All GENERIC kernels build tested, except ia64.

powerpc/include/booke/vmparam.h has one too, but it has no pmap.h,
so it's left as is.

Remove incomplete, never worked dynamic run-time memory registration
(uvm_page_physload(9)).  This functionality will be re-added later.

Remove the unfinished code to add a memory segment after uvm_page_init().
It doesn't even compile.

(In the future, we should allocate struct vm_page [] on the added memory
segment for NUMA's sake.)

Convert all VM_MDPAGE_INIT()'s to take struct vm_page_md * and paddr_t.

Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.

sync with head.

Sync with HEAD.

Remove SHMMAXPGS from all kernel configs. Dynamically compute the
initial limit as 1/4 of the physical memory. Ensure the limit is at
least 1024 pages, the old default on most platforms.

sync with head.

sync with head.

Alter sparc64 bootstrap, catch up to ofwboot v1.9:

 - Accept bootinfo structure passed down from ofwboot v1.9
 - Drop kernel re-mapping code
 - Use permanent 4MB mappings provided by the loader instead
 - Change kernel entry address to point directly at the code instead of pointing
   at the trap table's first slot. This allows the bootloader to detect
   those kernels which are aware of the new boot scheme
 - Due to the changes in kernel mapping code, alter secondary CPU bootstrap
   code to use trampoline just like FreeBSD does (some FreeBSD code is used
   here as well)

merge ktrace-lwp.

Pull up following revision(s) (requested by fvdl in ticket #798):
	sys/compat/sunos/sunos_exec.c: revision 1.47
	sys/compat/pecoff/pecoff_emul.c: revision 1.11
	sys/arch/sparc64/sparc64/netbsd32_machdep.c: revision 1.45
	sys/arch/amd64/amd64/netbsd32_machdep.c: revision 1.12
	sys/sys/proc.h: revision 1.198
	sys/compat/mach/mach_exec.c: revision 1.56
	sys/compat/freebsd/freebsd_exec.c: revision 1.27
	sys/arch/sparc64/include/vmparam.h: revision 1.27
	sys/kern/kern_resource.c: revision 1.91
	sys/compat/netbsd32/netbsd32_netbsd.c: revision 1.88
	sys/compat/osf1/osf1_exec.c: revision 1.39
	sys/compat/svr4_32/svr4_32_resource.c: revision 1.5
	sys/compat/ultrix/ultrix_misc.c: revision 1.99
	sys/compat/svr4_32/svr4_32_exec.h: revision 1.9
	sys/kern/exec_elf32.c: revision 1.103
	sys/compat/aoutm68k/aoutm68k_exec.c: revision 1.19
	sys/compat/sunos32/sunos32_exec.c: revision 1.20
	sys/compat/hpux/hpux_exec.c: revision 1.46
	sys/compat/darwin/darwin_exec.c: revision 1.40
	sys/kern/sysv_shm.c: revision 1.83
	sys/uvm/uvm_extern.h: revision 1.99
	sys/uvm/uvm_mmap.c: revision 1.89
	sys/kern/kern_exec.c: revision 1.195
	sys/compat/netbsd32/netbsd32.h: revision 1.31
	sys/arch/sparc64/sparc64/svr4_32_machdep.c: revision 1.20
	sys/compat/svr4/svr4_exec.c: revision 1.56
	sys/compat/irix/irix_exec.c: revision 1.41
	sys/compat/ibcs2/ibcs2_exec.c: revision 1.63
	sys/compat/svr4_32/svr4_32_exec.c: revision 1.16
	sys/arch/amd64/include/vmparam.h: revision 1.8
	sys/compat/linux/common/linux_exec.c: revision 1.73
Fix some things regarding COMPAT_NETBSD32 and limits/VM addresses.
* For sparc64 and amd64, define *SIZ32 VM constants.
* Add a new function pointer to struct emul, pointing at a function
  that will return the default VM map address. The default function
  is uvm_map_defaultaddr, which just uses the VM_DEFAULT_ADDRESS
  macro. This gives emulations control over the default map address,
  and allows things to be mapped at the right address (in 32bit range)
  for COMPAT_NETBSD32.
* Add code to adjust the data and stack limits when a COMPAT_NETBSD32
  or COMPAT_SVR4_32 binary is executed.
* Don't use USRSTACK in kern_resource.c, use p_vmspace->vm_minsaddr
  instead (emulations might have set it differently)
* Since this changes struct emul, bump kernel version to 3.99.2
Tested on amd64, compile-tested on sparc64.

sync with -current

Sync with HEAD.

sync with head.

Fix some things regarding COMPAT_NETBSD32 and limits/VM addresses.

* For sparc64 and amd64, define *SIZ32 VM constants.
* Add a new function pointer to struct emul, pointing at a function
  that will return the default VM map address. The default function
  is uvm_map_defaultaddr, which just uses the VM_DEFAULT_ADDRESS
  macro. This gives emulations control over the default map address,
  and allows things to be mapped at the right address (in 32bit range)
  for COMPAT_NETBSD32.
* Add code to adjust the data and stack limits when a COMPAT_NETBSD32
  or COMPAT_SVR4_32 binary is executed.
* Don't use USRSTACK in kern_resource.c, use p_vmspace->vm_minsaddr
  instead (emulations might have set it differently)
* Since this changes struct emul, bump kernel version to 3.99.2

Tested on amd64, compile-tested on sparc64.

Fix the sync with head I botched.

Sync with HEAD.

Sync with HEAD

Don't use NULL in integer-type assignments/comparisons.

remove some leftover cruft.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.

We use 8K VM pages on Sun4U, so make PAGE_SIZE, PAGE_SHIFT, and PAGE_MASK
into compile-time constants.

Sync with HEAD.

Use __LDPGSZ (which must be == USRTEXT) as the text address for a.out
executables, and eliminate the USRTEXT constant, which was only used
by the a.out exec code.

Pull up revision 1.20 (requested by thorpej in ticket #763):
  Increase the default stack limit to 2M (from 512K on sparc
  and 1M on sparc64).

Catch up to -current.

sync kqueue with -current; this includes merge of gehenna-devsw branch,
merge of i386 MP branch, and part of autoconf rototil work

many improvements:
 - use struct vm_page_md for attaching pv entries to struct vm_page
 - change pseg_set()'s return value to indicate whether the spare page
   was used as an L2 or L3 PTP.
 - use a pool for pv entries instead of malloc().
 - put PTPs on a list attached to the pmap so we can free them
   more efficiently (by just walking the list) in pmap_destroy().
 - use the new pmap_remove_all() interface to avoid flushing the cache and TLB
   for each pmap_remove() that's done as we are tearing down an address space.
 - in pmap_enter(), handle replacing an existing mapping more efficiently
   than just calling pmap_remove() on it.  also, skip flushing the
   TSB and TLB if there was no previous mapping, since there can't be
   anything we need to flush.  also, preload the TSB if we're pre-setting
   the mod/ref bits.
 - allocate hardware contexts like the MIPS pmap:
   allocate them all sequentially without reuse, then once we run out
   just invalidate all user TLB entries and flush the entire L1 dcache.
 - fix pmap_extract() for the case where the va is not page-aligned and
   nothing is mapped there.
 - fix calculation of TSB size.  it was comparing physmem (which is
   in units of pages) to constants that only make sense if they are
   in units of bytes.
 - avoid sleeping in pmap_enter(), instead let the caller do it.
 - use pmap_kenter_pa() instead of pmap_enter() where appropriate.
 - remove code to handle impossible cases in various functions.
 - tweak asm code to pipeline a little better.
 - remove many unnecessary spls and membars.
 - lots of code cleanup.
 - no doubt other stuff that I've forgotten.

the result of all this is that a fork+exit microbenchmark is 34% faster
and a fork+exec+exit microbenchmark is 28% faster.

Catch up to -current.

sync kqueue branch with HEAD

Increase the default stack limit to 2M (from 512K on sparc and 1M
on sparc64).

Catch up to -current.

Sync kqueue branch with -current.

Catch up to -current.

Cleanup.

make kernel compile

file vmparam.h was added on branch nathanw_sa on 2002-01-03 06:42:33 +0000

MAXSLP is defined to be a machine-independent scheduling parameter,
so move it into sys/param.h.

Catch up to -current.

Per discussion w/ chuck and chuck, restructure the md page stuff
to use a structure called "vm_page_md", and use __HAVE_VM_PAGE_MD
and __HAVE_PMAP_PHYSSEG.

Add a VM_MDPAGE_MEMBERS macro that defines pmap-specific data for
each vm_page structure.  Add a VM_MDPAGE_INIT() macro to init this
data when pages are initialized by UVM.  These macros are mandatory,
but ports may #define them to nothing if they are not needed/used.

This deprecates struct pmap_physseg.  As a transitional measure,
allow a port to #define PMAP_PHYSSEG so that it can continue to
use it until its pmap is converted to use VM_MDPAGE_MEMBERS.

Use all this stuff to eliminate a lot of extra work in the Alpha
pmap module (it's smaller and faster now).  Changes to other pmap
modules will follow.

Sync with HEAD.

Define VM_MASUSER_ADDRESS32.

Sync with HEAD.

Increase limits slightly.  We're still not using all 32 address bits yet,
let alone 64.....

Sync with HEAD

- rename 32bit USRSTACK32, and define USRSTACK to that if !__arch64__, so that
64bit code can see USRSTACK32
- bump the limits

Update thorpej_scsipi to -current as of a month ago
A i386 GENERIC kernel compiles without the siop, ahc and bha drivers
(will be updated later). i386 IDE/ATAPI and ncr work, as well as
sparc/esp_sbus. alpha should work as well (untested yet).
siop, ahc and bha will be updated once I've updated the branch to current
-current, as well as machine-dependant code.

Pullup by patch [eeh]:
Move KERNBASE from 0xf1000000 to 0x01000000.

Separate user and kernel address spaces and move the kernel down to
0x0000000001000000 -- 0x00000000f0000000, below the PROM where the
PROM thinks we should be.

Add support for multiple memory segments.

pullup the contents of -current arch/sparc64.  this gives us significant
ultrasparc PCI support (ultra5, ultra10, AXi, and E250 tested so far),
plus many other small fixes.  netbooting is now supported.

remove old (bogus) comment.

Update for the NKMEMPAGES changes.

Remove obsoleted macros.

Pull up to last week's -current.

CL* discarding.

Limit buffers to 1/4 of the kernel address space.

take an initial guess at UBC parameters.

Sync w/ -current.

Garbage-collect the VM_MBUF_SIZE constant.  Instead, use the size
(nmbclusters * mclbytes), so that the right amount of KVA space is
allocated if those variables are patched.

MNN is no longer optional, remove dead code

Merge paddr_t changes into the main branch.

Split vm_offset_t and vm_size_t into paddr_t, psize_t, vaddr_t, and vsize_t.

Define one page free list, and put all pages on it.

merge comment fix.

Import of sparc64.

Initial revision