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* Reorder copyright lines to preserve the source of "All rights reserved."Mark Johnston2019-03-061-1/+1
| | | | | | | | Reported by: rgrimes MFC with: r344829, r344830 Notes: svn path=/head/; revision=344845
* Add riscv minidump support to libkvm.Mark Johnston2019-03-053-0/+379
| | | | | | | | Submitted by: Mitchell Horne <mhorne063@gmail.com> Differential Revision: https://reviews.freebsd.org/D19171 Notes: svn path=/head/; revision=344829
* i386: Merge PAE and non-PAE pmaps into same kernel.Konstantin Belousov2019-01-301-3/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Notes: svn path=/head/; revision=343567
* Make cache coherency attributes definitions available in machine/vm.h on MIPS.Konstantin Belousov2018-08-011-0/+2
| | | | | | | | | | | | 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 Notes: svn path=/head/; revision=337048
* Make struct xinpcb and friends word-size independent.Brooks Davis2018-07-051-2/+0
| | | | | | | | | | | | | | | | | | | | | 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 Notes: svn path=/head/; revision=335979
* Use __SCCSID for SCCS IDs in libkvm sources.John Baldwin2018-05-227-37/+7
| | | | | | | | | | | | | | 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 Notes: svn path=/head/; revision=334053
* Reduce <sys/queue.h> pollution.Dag-Erling Smørgrav2018-05-111-0/+1
| | | | | | | | | | | | 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 Notes: svn path=/head/; revision=333475
* lib: further adoption of SPDX licensing ID tags.Pedro F. Giffuni2017-11-266-1/+13
| | | | | | | | | | | | | | | 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. Notes: svn path=/head/; revision=326219
* General further adoption of SPDX licensing ID tags.Pedro F. Giffuni2017-11-2013-0/+26
| | | | | | | | | | | | | | | | | 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. Notes: svn path=/head/; revision=326025
* libkvm: fix lib32 build.Will Andrews2017-11-121-0/+1
| | | | Notes: svn path=/head/; revision=325735
* libkvm: fix build failuresWill Andrews2017-11-1210-17/+39
| | | | Notes: svn path=/head/; revision=325732
* libkvm: fix 'index' shadowing.Will Andrews2017-11-121-13/+13
| | | | Notes: svn path=/head/; revision=325729
* libkvm: add kvm_walk_pages API.Will Andrews2017-11-1113-122/+740
| | | | | | | | | | | | | | | | | | | | 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 Notes: svn path=/head/; revision=325728
* DIRDEPS_BUILD: Update dependencies.Bryan Drewery2017-10-311-1/+0
| | | | | | | Sponsored by: Dell EMC Isilon Notes: svn path=/head/; revision=325188
* DIRDEPS_BUILD: Connect new directories.Bryan Drewery2017-10-311-0/+20
| | | | | | | Sponsored by: Dell EMC Isilon Notes: svn path=/head/; revision=325187
* Add HAS_TESTS to all Makefiles that use the SUBDIR.${MK_TESTS}+= tests idiomEnji Cooper2017-08-021-0/+1
| | | | Notes: svn path=/projects/make-check-sandbox/; revision=321911
* Fix #if conditional added in r319008Enji Cooper2017-05-271-2/+2
| | | | | | | | | | | | 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 Notes: svn path=/head/; revision=319010
* kvm_geterr_test: Compile out the portions that require kvm_open2(3) onEnji Cooper2017-05-271-0/+5
| | | | | | | | | | | | | | 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 Notes: svn path=/head/; revision=319008
* Commit the 64-bit inode project.Konstantin Belousov2017-05-231-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 Notes: svn path=/head/; revision=318736
* lib/libkvm: start adding basic tests for kvm(3)Enji Cooper2017-03-288-0/+531
| | | | | | | | | | | | | | | | | | | | | | | | | | | - 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 Notes: svn path=/head/; revision=316099
* libkvm: bump WARNS to 6 after recent commits done to resolve warnings issuesEnji Cooper2017-03-221-1/+1
| | | | | | | | | 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 Notes: svn path=/head/; revision=315698
* libkvm: fix warning issues post-r291406Enji Cooper2017-03-2211-17/+25
| | | | | | | | | | | | | | | | | - 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 Notes: svn path=/head/; revision=315697
* kvm_write: fix -Wcast-qual warning in pointer arithmetic argumentEnji Cooper2017-03-211-1/+1
| | | | | | | | | | | | | | 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 Notes: svn path=/head/; revision=315688
* kvm_geterr: handle `kd` == NULL in a deterministic/graceful mannerEnji Cooper2017-03-212-1/+15
| | | | | | | | | | | | | | | | | | | 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 Notes: svn path=/head/; revision=315686
* Handle kd == NULL gracefully with kvm_close(3)Enji Cooper2017-03-202-2/+25
| | | | | | | | | | | | | | | 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 Notes: svn path=/head/; revision=315647
* kvm_close(3): return `error` instead of blindly returning `0`Enji Cooper2017-03-201-1/+1
| | | | | | | | | | | | | | | `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 Notes: svn path=/head/; revision=315603
* kvm_open2(3): remove '*' when describing addr argument for `resolver`Enji Cooper2017-03-201-2/+2
| | | | | | | | | | | 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 Notes: svn path=/head/; revision=315601
* Remove a commented out line before kvm_getprocs(3)Enji Cooper2017-03-191-1/+0
| | | | | | | | | | | | | 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 Notes: svn path=/head/; revision=315595
* Tweak r315363 slightlyEnji Cooper2017-03-161-1/+1
| | | | | | | | | | | | 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 Notes: svn path=/head/; revision=315365
* Fix manlint errorsEnji Cooper2017-03-161-3/+3
| | | | | | | | | | | | | - 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 Notes: svn path=/head/; revision=315363
* Capitalize .Dt macro argumentEnji Cooper2017-03-161-2/+2
| | | | | | | | | | By convention, per mdoc(7), the document title should be all caps. MFC after: 1 week Sponsored by: Dell EMC Isilon Notes: svn path=/head/; revision=315362
* Return NULL instead of 0 on failure in _kvm_open, kvm_open{,2,files}Enji Cooper2017-03-161-4/+4
| | | | | | | | | | | | | 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 Notes: svn path=/head/; revision=315360
* Renumber copyright clause 4Warner Losh2017-02-2817-17/+17
| | | | | | | | | | | | 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 Notes: svn path=/head/; revision=314436
* libkvm - extend a bit the swap statistics field.Pedro F. Giffuni2017-01-023-9/+11
| | | | | | | | | | | 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 Notes: svn path=/head/; revision=311101
* libkvm: support access to vmm guest memory, allow writes to fwmem and vmmAndriy Gapon2016-12-272-7/+48
| | | | | | | | | | | | | | | | | | | | | | 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 Notes: svn path=/head/; revision=310630
* Fix memory leak.Gleb Smirnoff2016-12-201-0/+1
| | | | | | | | CID: 1367751 Reviewed by: jhb Notes: svn path=/head/; revision=310337
* Export the whole thread name in kinfo_procEric van Gyzen2016-12-071-2/+0
| | | | | | | | | | | | | | | | | | kinfo_proc::ki_tdname is three characters shorter than thread::td_name. Add a ki_moretdname field for these three extra characters. Add the new field to kinfo_proc32, as well. Update all in-tree consumers to read the new field and assemble the full name, except for lldb's HostThreadFreeBSD.cpp, which I will handle separately. Bump __FreeBSD_version. Reviewed by: kib MFC after: 1 week Relnotes: yes Sponsored by: Dell EMC Differential Revision: https://reviews.freebsd.org/D8722 Notes: svn path=/head/; revision=309676
* libkvm: Improve physical address lookup scaling.Will Andrews2016-07-188-213/+235
| | | | | | | | | | | | | | | | | | | | | | | | Instead of using a hash table to convert physical page addresses to offsets in the sparse page array, cache the number of bits set for each 4MB chunk of physical pages. Upon lookup, find the nearest cached population count, then add/subtract the number of bits from that point to the page's PTE bit. Then multiply by page size and add to the sparse page map's base offset. This replaces O(n) worst-case lookup with O(1) (plus a small number of bits to scan in the bitmap). Also, for a 128GB system, a typical kernel core of about 8GB will now only require ~4.5MB of RAM for this approach instead of ~48MB as with the hash table. More concretely, /usr/sbin/crashinfo against the same core improves from a max RSS of 188MB and wall time of 43.72s (33.25 user 2.94 sys) to 135MB and 9.43s (2.58 user 1.47 sys). Running "thread apply all bt" in kgdb has a similar RSS improvement, and wall time drops from 4.44s to 1.93s. Reviewed by: jhb Sponsored by: Backtrace I/O Notes: svn path=/head/; revision=302976
* libkvm: Bounds check (more) PTE indices.Will Andrews2016-07-183-0/+10
| | | | Notes: svn path=/head/; revision=302975
* libkvm: Put private kvm routines in kvm_private.c.Will Andrews2016-07-183-464/+526
| | | | Notes: svn path=/head/; revision=302974
* lib: minor spelling fixes in comments.Pedro F. Giffuni2016-05-013-5/+5
| | | | | | | No functional change. Notes: svn path=/head/; revision=298896
* Don't leak PML4 in _amd64_initvtop(..) if kvm_read2(..) failsEnji Cooper2016-04-301-0/+1
| | | | | | | | | | MFC after: 1 week Reported by: Coverity CID: 1341474 Sponsored by: EMC / Isilon Storage Division Notes: svn path=/head/; revision=298842
* Remove a -Wunused-but-set-variable variable -- `pa`Enji Cooper2016-04-301-2/+0
| | | | | | | | Reported by: gcc 5.x Sponsored by: EMC / Isilon Storage Division Notes: svn path=/head/; revision=298841
* Remove kvm_getfiles(3)Enji Cooper2016-04-305-319/+4
| | | | | | | | | | | | | | This libcall has been broken since (at least) r174989/8.0-RELEASE. Bump SHLIB_MAJOR for the change Differential Revision: https://reviews.freebsd.org/D6052 Relnotes: yes Reviewed by: jhb, markj Sponsored by: EMC / Isilon Storage Division Notes: svn path=/head/; revision=298840
* Fix memory allocation edgecases in kvm_argv(..)Enji Cooper2016-04-301-3/+12
| | | | | | | | | | | | | | | | - Don't leak nbufp on realloc failure in kvm_argv - Catch malloc errors with bufp - Set buflen last in the "buflen == 0" case to ensure that bufp/nbufp is properly reallocated on the next go around Differential Revision: https://reviews.freebsd.org/D6051 MFC after: 1 week Reviewed by: jhb, markj Reported by: cppcheck Sponsored by: EMC / Isilon Storage Division Notes: svn path=/head/; revision=298839
* Fix up pointer issues with lib/libkvmEnji Cooper2016-04-2210-35/+52
| | | | | | | | | | | | | | | | | | | In particular, - avoid dereferencing NULL pointers - test pointers against NULL, not 0 - test for errout == NULL in the top-level functions (kvm_open, kvm_openfiles, kvm_open2, etc) - Replace a realloc and free on failure with reallocf Found with: devel/cocchinelle Differential Revision: https://reviews.freebsd.org/D5954 MFC after: 1 week Reviewed by: jhb Sponsored by: EMC / Isilon Storage Division Notes: svn path=/head/; revision=298485
* MFHGlen Barber2016-04-041-1/+1
|\ | | | | | | | | | | | | Sponsored by: The FreeBSD Foundation Notes: svn path=/projects/release-pkg/; revision=297567
| * Fix parsing of a 1GB page table entry.John Baldwin2016-03-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | Use 'pdpe' to extract the PA of the 1GB page instead of 'pde' (which was a copy and paste bug from the 2MB page case further down). CID: 1341467 Reported by: pfg Notes: svn path=/head/; revision=297359
* | MFHGlen Barber2016-02-222-8/+7
|\| | | | | | | | | | | | | Sponsored by: The FreeBSD Foundation Notes: svn path=/projects/release-pkg/; revision=295886
| * Rename pte.h to pte-v4.h and start including directly either pte-v4.hSvatopluk Kraus2016-02-191-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | or pte-v6.h in files which needs it. There are quite internal definitions in pte-v4.h and pte-v6.h headers specific for corresponding pmap implementation. These headers should be included only in very few files and an intention is to not hide for which implementation such files are. Further, sys/arm/arm/elf_trampoline.c is an example of file which uses armv4 like pmap implementation for both armv4 and armv6 platforms. This is another reason why pte.h which includes specific header according to __ARM_ARCH is not created. Notes: svn path=/head/; revision=295801
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