FreeBSD source tree https://cgit-dev.freebsd.org/src-test/atom?h=main 2020-11-28T12:12:51Z 2020-11-28T12:12:51Z Konstantin Belousov kib@FreeBSD.org 2020-11-28T12:12:51Z urn:sha1:cd8537910406e68d4719136a5b0cf6d23bb1b23b Replace MAXPHYS by runtime variable maxphys. It is initialized from MAXPHYS by default, but can be also adjusted with the tunable kern.maxphys. Make b_pages[] array in struct buf flexible. Size b_pages[] for buffer cache buffers exactly to atop(maxbcachebuf) (currently it is sized to atop(MAXPHYS)), and b_pages[] for pbufs is sized to atop(maxphys) + 1. The +1 for pbufs allow several pbuf consumers, among them vmapbuf(), to use unaligned buffers still sized to maxphys, esp. when such buffers come from userspace (*). Overall, we save significant amount of otherwise wasted memory in b_pages[] for buffer cache buffers, while bumping MAXPHYS to desired high value. Eliminate all direct uses of the MAXPHYS constant in kernel and driver sources, except a place which initialize maxphys. Some random (and arguably weird) uses of MAXPHYS, e.g. in linuxolator, are converted straight. Some drivers, which use MAXPHYS to size embeded structures, get private MAXPHYS-like constant; their convertion is out of scope for this work. Changes to cam/, dev/ahci, dev/ata, dev/mpr, dev/mpt, dev/mvs, dev/siis, where either submitted by, or based on changes by mav. Suggested by: mav (*) Reviewed by: imp, mav, imp, mckusick, scottl (intermediate versions) Tested by: pho Sponsored by: The FreeBSD Foundation Differential revision: https://reviews.freebsd.org/D27225 2020-09-01T21:20:08Z Mateusz Guzik mjg@FreeBSD.org 2020-09-01T21:20:08Z urn:sha1:b64b31338f702c25d4542248b1a2ee2420d4dae8 2020-06-10T04:04:59Z Justin Hibbits jhibbits@FreeBSD.org 2020-06-10T04:04:59Z urn:sha1:76d5f5e22cdb9a71934bb01f8a67e3d67745607c The qcache is unnecessary for this purpose, it's only needed when there are lots of concurrent allocations. Reported by: markj 2020-01-13T23:09:00Z Justin Hibbits jhibbits@FreeBSD.org 2020-01-13T23:09:00Z urn:sha1:a80e3de39b605c6ffdad05101c7b43d5ab900e20 The count block was correct before. r356640 caused a read past the end of the tuple. 2020-01-11T22:29:44Z Justin Hibbits jhibbits@FreeBSD.org 2020-01-11T22:29:44Z urn:sha1:7d7671db00c62c709d32eb2969990462de3d6b7a r302340, as an attempt to fix the localbus child handling post-rman change, actually broke child resource allocation, due to typos in fdt_lbc_reg_decode(). This went unnoticed because there aren't any drivers currently in tree that use localbus. 2019-12-15T21:08:40Z Justin Hibbits jhibbits@FreeBSD.org 2019-12-15T21:08:40Z urn:sha1:054802650063bea1cb817ef22a887c3116813ba9 * Remove unused ATA_IN/OUT macros, they just clutter up the file. * Fix some RID management bits for the channel memory resource. 2019-12-05T18:47:29Z John Baldwin jhb@FreeBSD.org 2019-12-05T18:47:29Z urn:sha1:65d2f9c12b22a774dda7e01577e0a8b88378a6ef Reviewed by: kib Differential Revision: https://reviews.freebsd.org/D22684 2019-11-08T03:36:19Z Justin Hibbits jhibbits@FreeBSD.org 2019-11-08T03:36:19Z urn:sha1:9e2b2d699636b8c82ae2af5b9a9c3bfe203866a9 Freescale SoCs use a set of IRQs at the high end of the OpenPIC IRQ list, not counted in the NIRQs of the Feature reporting register. Some SoCs include a MSI inbound window in the PCIe controller configuration registers as well, but some don't. Currently, this only handles the SoCs *with* the MSI window. There are 256 MSIs per MSI bank (32 per MSI IRQ, 8 IRQs per MSI bank). The P5020 has 3 banks, yielding up to 768 MSIs; older SoCs have only one bank. 2019-11-02T21:15:56Z Brandon Bergren bdragon@FreeBSD.org 2019-11-02T21:15:56Z urn:sha1:ab3f2a3861293dadee9fcafc315e7f87ee4e6396 This involved several changes: * Since lld does not like text relocations, replace SMP boot page text relocs in booke/locore.S with position-independent math, and track the virtual base in the SMP boot page header. * As some SPRs are interpreted differently on clang due to the way it handles platform-specific SPRs, switch m*dear and m*esr mnemonics out for regular m*spr. Add both forms of SPR_DEAR to spr.h so the correct encoding is selected. * Change some hardcoded 32 bit things in the boot page to be pointer-sized, and fix alignment. * Fix 64-bit build of booke/pmap.c when enabling pmap debugging. Additionally, I took the opportunity to document how the SMP boot page works. Approved by: jhibbits (mentor) Differential Revision: https://reviews.freebsd.org/D21999 2019-11-02T02:24:53Z Justin Hibbits jhibbits@FreeBSD.org 2019-11-02T02:24:53Z urn:sha1:b144826d79367b7f743bb9f521da2aa3e83c913f