Commit Graph

425 Commits

Author SHA1 Message Date
Mark Johnston
34e2051faf Remove swblk_t.
It was used only to store the bounds of each swap device.  However,
since swblk_t is a signed 32-bit int and daddr_t is a signed 64-bit
int, swp_pager_isondev() may return an invalid result if swap devices
are repeatedly added and removed and sw_end for a device ends up
becoming a negative number.

Note that the removed comment about maximum swap size still applies.

Reviewed by:	jeff, kib
Tested by:	pho
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D23666
2020-02-17 15:11:07 +00:00
Bjoern A. Zeeb
10108cb673 Partially revert VNET change and expand VNET structure.
Revert parts of r353274 replacing vnet_state with a shutdown flag.

Not having the state flag for the current SI_SUB_* makes it harder to debug
kernel or module panics related to VNET bringup or teardown.
Not having the state also does not allow us to check for other dependency
levels between components, e.g. for moving interfaces.

Expand the VNET structure with the new boolean flag indicating that we are
doing a shutdown of a given vnet and update the vnet magic cookie for the
change.

Update libkvm to compile with a bool in the kernel struct.

Bump __FreeBSD_version for (external) module builds to more easily detect
the change.

Reviewed by:	hselasky
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D23097
2020-02-17 11:08:50 +00:00
Warner Losh
08d7456502 Remove sparc64 files
These were disconnected from the build when the kernel was
removed. Since they depend on removed parts of the kernel, remove them
completely.
2020-02-12 06:53:29 +00:00
Leandro Lupori
38cf2a4334 Implement kvm_kerndisp
This change adds a new libkvm function, kvm_kerndisp(), that can be used to
retrieve the kernel displacement, that is the difference between the kernel's
base virtual address at run time and the kernel base virtual address specified
in the kernel image file.

This will be used by kgdb, to properly relocate kernel symbols, when needed.

Reviewed by:	jhb
Differential Revision:	https://reviews.freebsd.org/D23285
2020-02-06 13:21:59 +00:00
Warner Losh
58aa35d429 Remove sparc64 kernel support
Remove all sparc64 specific files
Remove all sparc64 ifdefs
Removee indireeect sparc64 ifdefs
2020-02-03 17:35:11 +00:00
Simon J. Gerraty
2c9a9dfc18 Update Makefile.depend files
Update a bunch of Makefile.depend files as
a result of adding Makefile.depend.options files

Reviewed by:	 bdrewery
MFC after:	1 week
Sponsored by:   Juniper Networks
Differential Revision:  https://reviews.freebsd.org/D22494
2019-12-11 17:37:53 +00:00
Leandro Lupori
d3c34fc0f4 [PPC64] Initial libkvm minidump implementation
This change adds PowerPC64 support for minidumps on libkvm.

Address translation, page walk, and data retrieval were tested and seem to be
working correctly.

Reviewed by:	jhibbits
Differential Revision:	https://reviews.freebsd.org/D21555
2019-12-09 13:59:36 +00:00
Ed Maste
9dc7ed6253 kvm: fix types for cross-debugging
As with other libkvm interfaces use maximum-sized types to support
cross-debugging (e.g. a 64-bit vmcore on a 32-bit host).  See
https://lists.freebsd.org/pipermail/svn-src-all/2019-February/176051.html
for further discussion.

This is an API-breaking change, but there are few consumers of this
interface today.

Reviewed by:	will
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D21945
2019-11-08 14:51:09 +00:00
Mike Karels
789f4e26e6 Add support for ps -H on corefiles in libkvm
Add support for kernel threads in kvm_getprocs() and the underlying
kvm_proclist() in libkvm when fetching from a kernel core file. This
has been missing/needed for several releases, when kernel threads became
normal threads.  The loop over the processes now contains a sub-loop for
threads, which iterates beyond the first thread only when threads are
requested.  Also set some fields such as tid that were previously
uninitialized.

Reviewed by:	vangyzen jhb(earlier revision)
MFC after:	4 days
Sponsored by:	Forcepoint LLC
Differential Revision:	https://reviews.freebsd.org/D21461
2019-09-22 13:56:27 +00:00
Leandro Lupori
8024ba45db Add powerpc support to libkvm probe function
PowerPC kernels are of DYN type, instead of EXEC.

Reviewed by:	jhibbits
Differential Revision:	https://reviews.freebsd.org/D21583
2019-09-10 18:46:32 +00:00
Emmanuel Vadot
a7b5a3d486 pkgbase: Put a lot of binaries and lib in FreeBSD-runtime
All of them are needed to be able to boot to single user and be able
to repair a existing FreeBSD installation so put them directly into
FreeBSD-runtime.

Reviewed by:    bapt, gjb
Differential Revision:  https://reviews.freebsd.org/D21503
2019-09-05 14:13:08 +00:00
Mark Johnston
4fa0295937 Chase r350037.
Reported by:	jenkins
MFC with:	r350037
Sponsored by:	The FreeBSD Foundation
2019-07-16 16:02:20 +00:00
Enji Cooper
148a8da8d9 Update the spelling of my name (continuation of r346571)
Previous spellings of my name (NGie, Ngie) weren't my legal spelling. Use Enji
instead for clarity.

While here, remove "All Rights Reserved" from copyrights I "own".

MFC after:	1 week
2019-04-22 18:05:33 +00:00
John Baldwin
2e43efd0bb Drop "All rights reserved" from my copyright statements.
Reviewed by:	rgrimes
MFC after:	1 month
Differential Revision:	https://reviews.freebsd.org/D19485
2019-03-06 22:11:45 +00:00
Mark Johnston
f3af92bd36 Reorder copyright lines to preserve the source of "All rights reserved."
Reported by:	rgrimes
MFC with:	r344829, r344830
2019-03-06 16:50:14 +00:00
Mark Johnston
5e58ed820a Add riscv minidump support to libkvm.
Submitted by:	Mitchell Horne <mhorne063@gmail.com>
Differential Revision:	https://reviews.freebsd.org/D19171
2019-03-05 23:59:55 +00:00
Konstantin Belousov
9a52756044 i386: Merge PAE and non-PAE pmaps into same kernel.
Effectively all i386 kernels now have two pmaps compiled in: one
managing PAE pagetables, and another non-PAE. The implementation is
selected at cold time depending on the CPU features. The vm_paddr_t is
always 64bit now. As result, nx bit can be used on all capable CPUs.

Option PAE only affects the bus_addr_t: it is still 32bit for non-PAE
configs, for drivers compatibility. Kernel layout, esp. max kernel
address, low memory PDEs and max user address (same as trampoline
start) are now same for PAE and for non-PAE regardless of the type of
page tables used.

Non-PAE kernel (when using PAE pagetables) can handle physical memory
up to 24G now, larger memory requires re-tuning the KVA consumers and
instead the code caps the maximum at 24G. Unfortunately, a lot of
drivers do not use busdma(9) properly so by default even 4G barrier is
not easy. There are two tunables added: hw.above4g_allow and
hw.above24g_allow, the first one is kept enabled for now to evaluate
the status on HEAD, second is only for dev use.

i386 now creates three freelists if there is any memory above 4G, to
allow proper bounce pages allocation. Also, VM_KMEM_SIZE_SCALE changed
from 3 to 1.

The PAE_TABLES kernel config option is retired.

In collaboarion with: pho
Discussed with:	emaste
Reviewed by:	markj
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
Differential revision:	https://reviews.freebsd.org/D18894
2019-01-30 02:07:13 +00:00
Konstantin Belousov
c9bbc3ef29 Make cache coherency attributes definitions available in machine/vm.h on MIPS.
Move definitions from cpuregs.h into the cca.h, and include cca.h into vm.h.
This is required to make MIPS MD memattr definitions usable in userspace.

Sponsored by:	The FreeBSD Foundation, Mellanox Technologies
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D15583
2018-08-01 18:35:17 +00:00
Brooks Davis
f38b68ae8a Make struct xinpcb and friends word-size independent.
Replace size_t members with ksize_t (uint64_t) and pointer members
(never used as pointers in userspace, but instead as unique
idenitifiers) with kvaddr_t (uint64_t). This makes the structs
identical between 32-bit and 64-bit ABIs.

On 64-bit bit systems, the ABI is maintained. On 32-bit systems,
this is an ABI breaking change. The ABI of most of these structs
was previously broken in r315662.  This also imposes a small API
change on userspace consumers who must handle kernel pointers
becoming virtual addresses.

PR:		228301 (exp-run by antoine)
Reviewed by:	jtl, kib, rwatson (various versions)
Sponsored by:	DARPA, AFRL
Differential Revision:	https://reviews.freebsd.org/D15386
2018-07-05 13:13:48 +00:00
John Baldwin
993d074be6 Use __SCCSID for SCCS IDs in libkvm sources.
Rather than using #ifdef's around a static char array, use the
existing helper macro from <sys/cdefs.h> for SCCS IDs.  To
preserve existing behavior, add -DNO__SCCSID to CFLAGS to not
include SCCS IDs in the built library by default.

Reviewed by:	brooks, dab (older version)
Reviewed by:	rgrimes
Differential Revision:	https://reviews.freebsd.org/D15459
2018-05-22 15:52:22 +00:00
Dag-Erling Smørgrav
6bff85ff9a Reduce <sys/queue.h> pollution.
While <sys/sysctl.h> includes <sys/queue.h> unconditionally, it is only
actually used in code which is conditional on _KERNEL.  Make the #include
itself conditional as well, and fix userland code that uses <sys/queue.h>
for other purposes but relied on <sys/sysctl.h> to bring it in.

MFC after:	1 week
2018-05-11 00:01:43 +00:00
Pedro F. Giffuni
5e53a4f90f lib: further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using mis-identified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-26 02:00:33 +00:00
Pedro F. Giffuni
8a16b7a18f General further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.
2017-11-20 19:49:47 +00:00
Will Andrews
ec8659b385 libkvm: fix lib32 build. 2017-11-12 03:28:47 +00:00
Will Andrews
8baaf913be libkvm: fix build failures 2017-11-12 01:36:48 +00:00
Will Andrews
2aa6a4f3c8 libkvm: fix 'index' shadowing. 2017-11-12 00:00:38 +00:00
Will Andrews
c9057838be libkvm: add kvm_walk_pages API.
This API allows callers to enumerate all known pages, including any
direct map & kernel map virtual addresses, physical addresses, size,
offset into the core, & protection configured.

For architectures that support direct map addresses, also generate pages
for any direct map only addresses that are not associated with kernel
map addresses.

Fix page size portability issue left behind from previous kvm page table
lookup interface.

Reviewed by:	jhb
Sponsored by:	Backtrace I/O
Differential Revision:	https://reviews.freebsd.org/D12279
2017-11-11 23:30:58 +00:00
Bryan Drewery
ea825d0274 DIRDEPS_BUILD: Update dependencies.
Sponsored by:	Dell EMC Isilon
2017-10-31 00:07:04 +00:00
Bryan Drewery
3806950135 DIRDEPS_BUILD: Connect new directories.
Sponsored by:	Dell EMC Isilon
2017-10-31 00:04:07 +00:00
Enji Cooper
8c09935728 Add HAS_TESTS to all Makefiles that use the SUBDIR.${MK_TESTS}+= tests idiom 2017-08-02 08:14:06 +00:00
Enji Cooper
9f825b1b1d Fix #if conditional added in r319008
I committed an earlier version of the file by accident

This is a no-op on ^/head and ^/stable/11.

MFC after:	now
Sponsored by:	Dell EMC Isilon
2017-05-27 23:23:22 +00:00
Enji Cooper
fbf8ca6df8 kvm_geterr_test: Compile out the portions that require kvm_open2(3) on
systems that lack the libcall, based on __FreeBSD_version.

kvm_open2(3) wasn't made available until r291406, which is in ^/stable/11,
but not ^/stable/10. This makes some of kvm_geterr_test available for testing
on ^/stable/10.

MFC after:	now
Sponsored by:	Dell EMC Isilon
2017-05-27 23:19:32 +00:00
Konstantin Belousov
6992112349 Commit the 64-bit inode project.
Extend the ino_t, dev_t, nlink_t types to 64-bit ints.  Modify
struct dirent layout to add d_off, increase the size of d_fileno
to 64-bits, increase the size of d_namlen to 16-bits, and change
the required alignment.  Increase struct statfs f_mntfromname[] and
f_mntonname[] array length MNAMELEN to 1024.

ABI breakage is mitigated by providing compatibility using versioned
symbols, ingenious use of the existing padding in structures, and
by employing other tricks.  Unfortunately, not everything can be
fixed, especially outside the base system.  For instance, third-party
APIs which pass struct stat around are broken in backward and
forward incompatible ways.

Kinfo sysctl MIBs ABI is changed in backward-compatible way, but
there is no general mechanism to handle other sysctl MIBS which
return structures where the layout has changed. It was considered
that the breakage is either in the management interfaces, where we
usually allow ABI slip, or is not important.

Struct xvnode changed layout, no compat shims are provided.

For struct xtty, dev_t tty device member was reduced to uint32_t.
It was decided that keeping ABI compat in this case is more useful
than reporting 64-bit dev_t, for the sake of pstat.

Update note: strictly follow the instructions in UPDATING.  Build
and install the new kernel with COMPAT_FREEBSD11 option enabled,
then reboot, and only then install new world.

Credits: The 64-bit inode project, also known as ino64, started life
many years ago as a project by Gleb Kurtsou (gleb).  Kirk McKusick
(mckusick) then picked up and updated the patch, and acted as a
flag-waver.  Feedback, suggestions, and discussions were carried
by Ed Maste (emaste), John Baldwin (jhb), Jilles Tjoelker (jilles),
and Rick Macklem (rmacklem).  Kris Moore (kris) performed an initial
ports investigation followed by an exp-run by Antoine Brodin (antoine).
Essential and all-embracing testing was done by Peter Holm (pho).
The heavy lifting of coordinating all these efforts and bringing the
project to completion were done by Konstantin Belousov (kib).

Sponsored by:	The FreeBSD Foundation (emaste, kib)
Differential revision:	https://reviews.freebsd.org/D10439
2017-05-23 09:29:05 +00:00
Enji Cooper
10f81a9b3b lib/libkvm: start adding basic tests for kvm(3)
- kvm_close: add a testcase to verify support for errno = EINVAL / -1
  (see D10065) when kd == NULL is provided to the libcall.
- kvm_geterr:
-- Add a negative testcase for kd == NULL returning "" (see D10022).
-- Add two positive testcases:
--- test the error case using kvm_write on a O_RDONLY descriptor.
--- test the "no error" case using kvm_read(3) and kvm_nlist(3) as
    helper routines and by injecting a bogus error message via
    _kvm_err (an internal API) _kvm_err was used as there isn't a
    formalized way to clear the error output, and because
    kvm_nlist always returns ENOENT with the NULL terminator today.
- kvm_open, kvm_open2:
-- Add some basic negative tests for kvm_open(3) and kvm_open2(3).
   Testing positive cases with a specific
   `corefile`/`execfile`/`resolver` requires more work and would require
   user intervention today in order to reliably test this out.

Reviewed by:	markj
MFC after:	2 months
Sponsored by:	Dell EMC Isilon
Differential Revision:	D10024
2017-03-28 17:37:49 +00:00
Enji Cooper
25e76a1d57 libkvm: bump WARNS to 6 after recent commits done to resolve warnings issues
MFC after:	1 month
Tested with:	make tinderbox; clang 4.0.0 (amd64), gcc 4.2.1/6.3.0 (amd64)
Sponsored by:	Dell EMC Isilon
2017-03-22 02:44:39 +00:00
Enji Cooper
881b0edb8f libkvm: fix warning issues post-r291406
- Fix -Wunused warnings with *_native detection handlers by marking `kd`
  __unused, except with arm/mips, where a slightly more complicated scheme
  is required to handle the native case vs the non-native case.
- Fix -Wmissing-variable-declarations warnings by marking struct kvm_arch
  objects static.

Differential Revision:	D10071
MFC after:	1 week
Reviewed by:	vangyzen
Tested with:	WIP test code (D10024) // kgdb7121 (i386 crash/kernel on amd64)
Sponsored by:	Dell EMC Isilon
2017-03-22 02:42:00 +00:00
Enji Cooper
0f5425a4fc kvm_write: fix -Wcast-qual warning in pointer arithmetic argument
Cast buf to `const char *` when doing arithmetic operation to match
`cp`'s type [1].

Differential Revision:	D10082
MFC after:	1 week
Reviewed by:	cem (earlier diff), vangyzen
Submitted by:	cem [1]
Sponsored by:	Dell EMC Isilon
2017-03-21 20:48:36 +00:00
Enji Cooper
7d0a282a12 kvm_geterr: handle kd == NULL in a deterministic/graceful manner
Return a NUL string instead of just working by accident with kvm_geterr(3)
when MALLOC_PRODUCTION is disabled (I didn't confirm the MALLOC_PRODUCTION
being enabled path).

Document the new explicit return behavior for kvm_geterr(3), as well
as the previous implicit behavior, i.e., the buffer attached to
returned via kvm_geterr(3) would be empty if a previous error hadn't been
stored in `kd`.

Differential Revision:	D10022
MFC after:	1 week
Reviewed by:	vangyzen
Sponsored by:	Dell EMC Isilon
2017-03-21 19:02:17 +00:00
Enji Cooper
54fc00f7f9 Handle kd == NULL gracefully with kvm_close(3)
Don't segfault in kvm_close(3) if provided a NULL pointer. Instead, return
-1 and set errno to EINVAL.

Document this new behavior explicitly.

MFC after:	1 week
Reviewed by:	vangyzen
Sponsored by:	Dell EMC Isilon
Differential Revision:	D10065
2017-03-20 18:28:22 +00:00
Enji Cooper
4937896a10 kvm_close(3): return error instead of blindly returning 0
`error` is the accumulated error from previous close(2) calls.

This bug has been present since the libcall's import from 4.4BSD
Lite (r1573).

MFC after:	1 week
Noticed by:	vangyzen (D10022)
Relnotes:	yes
Sponsored by:	Dell EMC Isilon
2017-03-20 02:47:28 +00:00
Enji Cooper
3eb11185a6 kvm_open2(3): remove '*' when describing addr argument for resolver
As noted by vangyzen, with a similar issue in D10022, the pointer portion of
the .Fa macro call is unnecessary, so remove the '*'.

MFC after:	1 week
Sponsored by:	Dell EMC Isilon
2017-03-20 01:19:04 +00:00
Enji Cooper
f72823da48 Remove a commented out line before kvm_getprocs(3)
The commented out return value for kvm_getprocs(3) was misleading -- the
uncommented line is correct.

No content change

MFC after:	1 week
Sponsored by:	Dell EMC Isilon
2017-03-19 23:04:58 +00:00
Enji Cooper
1f50ad62db Tweak r315363 slightly
I noticed after commit that kvm_dpcpu_setcpu was defined in the manpage.
Thus, the correct macro for the function reference is .Fn, not .Xr.

MFC after:	1 week
X-MFC with:	r315363
Sponsored by:	Dell EMC Isilon
2017-03-16 03:24:15 +00:00
Enji Cooper
494deaf862 Fix manlint errors
- Add missing comma after kvm_dpcpu_setcpu .Nm macro use (multiple
  .Nm entries should be separated by commas)
- Add missing section for kvm_dpcpu_setcpu Xr.

MFC after:	1 week
Reported by:	make manlint
Sponsored by:	Dell EMC Isilon
2017-03-16 03:20:59 +00:00
Enji Cooper
d5f024f279 Capitalize .Dt macro argument
By convention, per mdoc(7), the document title should be all caps.

MFC after:	1 week
Sponsored by:	Dell EMC Isilon
2017-03-16 03:18:06 +00:00
Enji Cooper
28047d83f0 Return NULL instead of 0 on failure in _kvm_open, kvm_open{,2,files}
This is being done for the following reasons:
- kvm_open(3), etc says they will return NULL.
- NULL by definition is (void*)0 per POSIX, but can be redefined,
  depending on the compiler, etc.

MFC after:	1 week
Sponsored by:	Dell EMC Isilon
2017-03-16 02:31:42 +00:00
Warner Losh
fbbd9655e5 Renumber copyright clause 4
Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by:	Jan Schaumann <jschauma@stevens.edu>
Pull Request:	https://github.com/freebsd/freebsd/pull/96
2017-02-28 23:42:47 +00:00
Pedro F. Giffuni
eca80cd0ae libkvm - extend a bit the swap statistics field.
Change ksw_used and ksw_total to unsigned, which increases the maximum
total swap that can be displayed properly from ~8TB to ~16TB.

Obtained from:	DragonflyBSD (ecc2e461)
MFC after:	2 weeks
2017-01-02 15:12:11 +00:00
Andriy Gapon
7502cc401b libkvm: support access to vmm guest memory, allow writes to fwmem and vmm
This change consists of two parts:
- allow libkvm to recognize /dev/vmm/* character devices as devices that
  provide access to the physical memory of a system (similarly to /dev/fwmem*)
- allow libkvm to recognize that /dev/vmm/* and /dev/fwmem* devices provide
  access to the physical memory of live remote systems and, thus, the memory
  is writable

As a result, it should be possible to run commands like
$ kgdb -w /path/to/kernel /dev/fwmem0.0
$ kgdb /path/to/kernel /dev/vmm/guest

Reviewed by:	kib, jhb
MFC after:	2 weeks
Relnotes:	yes
Sponsored by:	Panzura
Differential Revision: https://reviews.freebsd.org/D8679
2016-12-27 10:17:56 +00:00
Gleb Smirnoff
f6080aabd7 Fix memory leak.
CID:		1367751
Reviewed by:	jhb
2016-12-20 20:11:16 +00:00