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2020-06-22Change tsc_get_timecount return from uint to u_int per sys/timetc.h.Paul Irofti
First brought up by naddy@ in the usertc thread, OK kettenis@.
2020-06-19fold the TSC value in fewer operations, same result; ok deraadt@Christian Weisgerber
2020-06-17pci_intr_establish_cpu() for establishing an interrupt no a specific cpu.David Gwynne
the cpu is specified by a struct cpu_info *, which should generally come from an intrmap. this is adapted from a diff that patrick@ sent round a few years ago for a pci_intr_map_msix_cpuid, where you asked for an msi vector on a specific cpu, and then called pci_intr_establish with the handle you get. kettenis pointed out that it's hard on some archs to carry cpu on a pci interrupt handle, so i tweaked it to turn it into a pci_intr_establish_cpu instead. jmatthew@ and i (but mostly jmatthew@ to be honest) have been experimenting with this api on multiple archs and it is working out well. i'm putting this diff in now on amd64 so people can kick the tyres a bit. tested with hacked up vmx(4), ix(4), and mcx(4)
2020-06-16make intr_barrier run sched_barrier on the cpu the interrupt pinned to.David Gwynne
intr_barrier passed NULL to sched_barrier before this, which ends up being the primary cpu. that's been mostly right until this point, but is set to change.
2020-06-15Check rdrand for success and try up to ten times, as recommended by Intel.Christian Weisgerber
Do the same for rdseed. ok deraadt@
2020-06-14crank version numberTheo de Raadt
2020-06-14asm versions of mdrandom() no longer neededTheo de Raadt
2020-06-14rewrite mdrandom() in C. previously this XOR'd against rdrand if available,Theo de Raadt
and alternatively XOR'd against TSC. now always run both sequences, and also support rdseed as a third procedure. ok kettenis naddy
2020-06-08update drm to linux 5.7Jonathan Gray
adds kernel support for amdgpu: vega20, raven2, renoir, navi10, navi14 inteldrm: icelake, tigerlake Thanks to the OpenBSD Foundation for sponsoring this work, kettenis@ for helping, patrick@ for helping adapt rockchip drm and many developers for testing.
2020-06-03let the random subsystem read the tsc for event "timestamps".David Gwynne
2020-06-02add acpihid(4) for ACPI HID event and 5-button array devicesJoshua Stein
ok kettenis
2020-05-31add umstc(4) for Microsoft Surface Type Cover keyboardsJoshua Stein
2020-05-31introduce "cpu_rnd_messybits" for use instead of nanotime in dev/rnd.c.David Gwynne
rnd.c uses nanotime to get access to some bits that change quickly between events that it can mix into the entropy pool. it doesn't use nanotime to get a monotonically increasing set or ordered and accurate timestamps, it just wants something with bits that change. there's been discussions for years about letting rnd use a clock that's super fast to read, but not necessarily accurate, but it wasn't until recently that i figured out it wasn't interested in time at all, so things like keeping a fast clock coherent between cpu cores or correct according to ntp is unecessary. this means we can just let rnd read the cycle counters on cpus and things will be fine. cpus with cycle counters that vary in their speed and arent kept consistent between cores may even be desirable in this context. so this is the first step in converting rnd.c to reading cycle counter. it copies the nanotime backend to each arch, and they can replace it with something MD as a second step later on. djm@ suggested rnd_messybytes, but we landed on cpu_rnd_messybits. thanks to visa for his eyes. ok deraadt@ visa@ deraadt@ says he will help handle any MD fallout that occurs.
2020-05-29dev/rndvar.h no longer has statistical interfaces (removed during variousTheo de Raadt
conversion steps). it only contains kernel prototypes for 4 interfaces, all of which legitimately belong in sys/systm.h, which are already included by all enqueue_randomness() users.
2020-05-28When calling rasops_init() in efifb_cnremap() and efifb_attach(), passFrederic Cambus
EFIFB_HEIGHT and EFIFB_WIDTH instead of efifb_std_descr.n{rows,cols}. Because the efifb resolution doesn't change, this ensures 'ri_emuwidth' and 'ri_emuheight' will always get the same value when we remap and later when we attach, so the text area is always displayed at the same position. This fixes display glitches happening on smaller screens or with larger fonts, which caused the content previously displayed in the area that was becoming margins when remapping to remain there. OK jsg@
2020-05-28Call cninit() after parsing boot parameter to make cninit() possibleYASUOKA Masahiko
to select the VGA or the EFI framebuffer properly. Previous initializes VGA unconditionally, it caused serious problems like the video distortion and so on. As a downside of this commit, some early panic or debug messages will not be displayed. test Andrew Daugherity, jsg ok jsg kettenis
2020-05-27raise max columns and rows in efifb to 160Jonathan Gray
This is the same change made in rev 1.21 to match the drm drivers. It was reverted as Lucas Raab reported problems with inteldrm taking over the fb with a 4k display. Lucas confirmed that this is no longer an issue. Prompted by a similar patch from John Carmack to raise the limits. ok kettenis@
2020-05-27don't limit clflush to Intel CPUsJonathan Gray
discussed with deraadt@
2020-05-26increment version numbers, due to recent RB_GOODSEED and fchmod +T changesTheo de Raadt
2020-05-25Adjust mdrandom() to also return 0 for success, -1 for failureTheo de Raadt
2020-05-25Adjust fwrandom() to return 0 for sucess, -1 for failureTheo de Raadt
2020-05-25add wsmoused support to efifbJonathan Gray
from John Carmack
2020-05-25change wsdisplay attribute type from long to uint32_tJonathan Gray
miod explained it was initially a long as it was thought drivers may need to allocate storage but in practice they don't need more than 32 bits for an attribute. suggested and reviewed by miod@
2020-05-25rename wsdisplay alloc_attr() to pack_attr()Jonathan Gray
Suggested by John Carmack. miod agrees a rename would make sense and explained it was initially thought drivers may need to allocate storage but in practice they don't need more than 32 bits for an attribute. ok mpi@
2020-05-25Kill unused cdev_pc_init().Martin Pieuchot
ok kettenis@, visa@
2020-05-17Put setjmp+longjmp inside #ifdef DDB the only kernel-side user.Theo de Raadt
This shrinks the ramdisks a tiny bit.
2020-05-16Make inittodr() and resettodr() MI.Mark Kettenis
ok deraadt@, mpi@, visa@ ok cheloha@ as well (would have preferred in new file for this code)
2020-05-15disable ohci to compensate for bloat.Theo de Raadt
sad
2020-05-14Bring back the acpi(4) changes. This time around only use the ACPI _CRSMark Kettenis
information on ACPI 5.0 and later. ok krw@, patrick@
2020-05-14Use '/t' on all architectures to get a trace via TID.Martin Pieuchot
ok sthen@, patrick@
2020-05-13Kill biospoll/pctrpoll defines and use `seltrue' directly in cdev_*_init().Martin Pieuchot
While here use the kqfilter equivalent to `seltrue' to ensure both interfaces are coherent. ok visa@
2020-05-11Initialize the timeval passed to todr_gettime() with the base time fromMark Kettenis
the file system such that implementations can use it to guess the right century. ok mpi@
2020-05-02Fix buglet in previous commit; use time from the struct timeval that wasMark Kettenis
passed in when setting the RTC time instead of the global time_second. ok mpi@
2020-04-28Use the same inittodr()/resettodr() implementation as on arm64/armv7/sparc64Mark Kettenis
and move it to the end of machdep.c. Rework the actual implementation for te MC14818 compatible RTC into something that can be used as a todr_handle. ok mpi@
2020-04-19(1 << 39) is not well defined on a 32-bit int. Use same casts forKenneth R Westerback
low_mask as already used on high_mask to convince compiler to use 64 bits. CID 1480717 CID 1480778 ok pd@
2020-04-19Initialize vmx_get_guest_faulttype() 'prot' to 0 instead of usingKenneth R Westerback
random stack garbage. CID 1492655 ok pd@
2020-04-18Sync existing stacktrace_save() implementationsVisa Hankala
Upgrade stacktrace_save() to stacktrace_save_at() on architectures where the latter is missing. Define stacktrace_save() as an inline function in header <sys/stacktrace.h> to reduce duplication of code. OK mpi@
2020-04-15Remove unused protoype.Mark Kettenis
2020-04-12Add support for the _CCA method. This method indicates whether DMA isMark Kettenis
cache-coherent or not. To implement this, acpi(4) gets two bus_dma tags and passes the appropriate one when attaching devices based on _CCA. On i386/amd64, where for all practical purpose DMA is always cache-coherent, the two tags are the same. But on arm64 they are distinct. ok patrick@
2020-04-08vmm(4): add IOCTL handler to sets the access protections of the eptpd
This exposes VMM_IOC_MPROTECT_EPT which can be used by vmd to lock in physical pages. Currently, vmd just terminates the vm in case it gets a protection fault in the future. This feature is used by solo5 which uses vmm(4) as a backend hypervisor. ok mpi@ Patch from Adam Steen <adam@adamsteen.com.au>
2020-04-08vmm(4): handle cr0 writes more correctly for vmxpd
* Switch to using vcpu->vc_vmx_cr0_fixed[1|0] to check must be 0|1 bits, rather than the cpu capabilities. * Add the checks on the new values as per the SDM 2.5 CONTROL REGISTERS. 2.1 Bits 63:32 of CR0 and CR4 are reserved and must be written with zeros. Writing a nonzero value to any of the upper 32 bits results in a general-protection exception, #GP(0). 2.2 setting the PG flag when the PE flag is clear causes a general-protection exception (#GP). 11.5.1 Cache Control Registers and Bits, Table 11-5. Cache Operating Modes 2.3 CD: 0, NW: 1, Invalid setting. Generates a general-protection exception (#GP) with an error code of 0. *. Don't alway assume, if the guest is not disabling paging, they are enabling it, check the guest is actually enabling paging. also only read cr4 when we actually need it, not right at the start. ok mpi@ Patch from Adam Steen <adam@adamsteen.com.au>
2020-04-06Update my email address.Paul Irofti
2020-03-29Prevent stack trace saving from inspecting untrusted data. On amd64,Visa Hankala
arm64 and i386, the chain of call frames is continuous from kernel to userspace. The unwinder has to stop at the latest when it reaches the start of the kernel stack. OK mpi@
2020-03-29Prevent out of bounds read in strlcpy due to vcp_name not being NUL-terminated.tobhe
Reported-by: syzbot+48e38ebd31c030b5841c@syzkaller.appspotmail.com Found by Greg Steuck <greg (at) nest (dot) cx> Discussed with deraadt@
2020-03-25Introduce stacktrace_save_at() and make use of it in dt(4).Martin Pieuchot
This variant of stacktrace_save() takes an aditionnal argument to skip an arbitrary number of frame. This allows to skip recording frames used to execute the profiling code and produces outputs easier to understand. Inputs from and ok visa@
2020-03-22Make efi_device_path_depth() return the full device path depth if we don'tMark Kettenis
find a media device path node. Fixes booting OpenBSD on some older U-Boot versions that are in wide circulation such as 2017.09 and 2017.11. ok patrick@
2020-03-17rework amd (not intel) smt/core/package detection.David Gwynne
the previous code relied on newer cpus having properly filled in values for som e new cpuid fields, but these are definitely not filled in properly if you're running in a certain type of virtual machine, which meant a lot of cores were misidentified as threads. this new code follows what most other operating systems seem to do. they read the "initial local apic id", which is globally unique in a system, and cut it up into the package, core, and smt values. the line between a package and the cores/threads inside a package is determined by the "ApicIdSize". once the package is masked off, the remaining core/thread ids is divided up by the ThreadsPerCore value. the latter defaults to 1, unless we're on a newer (eg, zen) chip that provides a higher value. this seems to work well across a variety of machines of different vintages. thanks to mark patruck, hrvoje popovski, and sthen@ for a lot of testing. ok sthen@
2020-03-16Make the check for vmm_softc->mode exhaustive and return an errorJasper Lievisse Adriaanse
when not running on a supported mode. This matches code elsewhere in the file and prevents using the uninitialized vrs later in the function. Coverity CID 148078 as discussed with mike larkin
2020-03-12Use strlcpy to make sure 'vm_name' and 'vir_name' are NUL terminated.tobhe
CID 1453255 ok deraadt@
2020-03-11Do not declare a variable inside a for () loop.Martin Pieuchot
Fix build with gcc.
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