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1009aa1205
This tag contains some major improvements to the RISC-V port, including the necessary interrupt controller and timer support to actually make it to userspace. Support for three devices has been added: * Support for the ISA-mandated timers on RISC-V systems. * Support for the ISA-mandated first-level interrupt controller on RISC-V systems, which is handled as part of our core arch code because it's very small and tightly tied to the ISA. * Support for SiFive's platform-level interrupt controller, which talks to the actual devices. In addition to these new devices, there are a handful of cleanups all over the RISC-V tree: * Build fixes for various configurations * A fix to the vDSO build's makefile so it respects CFLAGS. * The addition of __lshrti3, a libgcc derived function necessary for some 32-bit configurations. * !SMP && PERF_EVENTS * Cleanups to the arch code to remove the remnants of old versions of the drivers that were just properly submitted. * Some dead code from the timer driver, most of which wasn't ever even compiled. * Cleanups of some interrupt #defines, which are now local to the interrupt handling code. * Fixes to ptrace(), which while not being sufficient to fully make GDB work are at least sufficient to get simple GDB tasks to work. * Early printk support via RISC-V's architecturally mandated SBI console device. * A fix to our early debug trap handler to ensure it's always aligned. These patches have all been through a fairly extensive review process, but as this enables a whole pile of functionality (ie, userspace) I'm confident we'll need to submit a few more patches. The only concrete issues I know about are the sys_riscv_flush_icache patches, but as I managed to screw those up on Friday I figured it'd be best to let them bake another week. This tag boots a Fedora root filesystem on QEMU's master branch for me, and before this morning's rebase (from 4.18-rc8 to 4.18) it booted on the HiFive Unleashed. Thanks to Christoph Hellwig and the other guys at WD for getting the new drivers in shape! -----BEGIN PGP SIGNATURE----- iQJHBAABCAAxFiEEAM520YNJYN/OiG3470yhUCzLq0EFAltx3HcTHHBhbG1lckBk YWJiZWx0LmNvbQAKCRDvTKFQLMurQc7nEACh8NCRLyXHOAQefomb+BUx+DJXweau lhTiPexB7+3ZAT6FvL8BgHFu3qMsgZ8iI5pxIz7tap2WRTlakRABLes7c3xQPI4a 3rDbZFE78lQDNY0Kj8iUpvYr0aOfMcC8aoD30qQHaWZVgYZvaZGD3Sar6VbTyaNe 5F5lRaiAtrMmHNio/fXQvnMP83nc1Nxzc4q8VeRjmufc0CvGZUs3L2ZRVx1phwav VedQFsrNHlcyulBv9rQXzaeyvVn+FNKlu4c/9sI6xsGZofGZjOqub1vjURuEfTc5 4AtdFMN0Xb2TYCK277Fr/FY/VEHGXCV+3hGc2U62hnpBtRgGERn7gQUimCJD5b+V gpXZGjtLvTXp9a4N6+ThC/oqvr72aLzInNap95MFK5xSMx/4AdCG7u63sd2qLtkL tlYho+Hd50ImIlUCTs6pfjzmgTMLW2huVJhDNx2lt9OUvNNYjTc4mjEK2WK8DUC7 aUMcHYZMn3hJFNwvd5xTxLPua4ahhhYTyfzHwnMiND4ZjdUnxtrKNj46HjSPqMp9 mgKOkv3G0a021gYODI/dweYI1SV2my814fQHZW4rcFYM2lLwrn2cPMMGezAJF9sR mbLHW6ZxJrtd9m+RZsJB9Z3QnBs68yIqTOBPRRFM5egwt9s9y+19HnBDVe1hj8/j OpmZ/qXCqQt+jA== =PfnC -----END PGP SIGNATURE----- Merge tag 'riscv-for-linus-4.19-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux Pull RISC-V updates from Palmer Dabbelt: "This contains some major improvements to the RISC-V port, including the necessary interrupt controller and timer support to actually make it to userspace. Support for three devices has been added: - the ISA-mandated timers on RISC-V systems. - the ISA-mandated first-level interrupt controller on RISC-V systems, which is handled as part of our core arch code because it's very small and tightly tied to the ISA. - SiFive's platform-level interrupt controller, which talks to the actual devices. In addition to these new devices, there are a handful of cleanups all over the RISC-V tree: - build fixes for various configurations: * A fix to the vDSO build's makefile so it respects CFLAGS. * The addition of __lshrti3, a libgcc derived function necessary for some 32-bit configurations. * !SMP && PERF_EVENTS - Cleanups to the arch code to remove the remnants of old versions of the drivers that were just properly submitted. * Some dead code from the timer driver, most of which wasn't ever even compiled. * Cleanups of some interrupt #defines, which are now local to the interrupt handling code. - Fixes to ptrace(), which while not being sufficient to fully make GDB work are at least sufficient to get simple GDB tasks to work. - Early printk support via RISC-V's architecturally mandated SBI console device. - A fix to our early debug trap handler to ensure it's always aligned. These patches have all been through a fairly extensive review process, but as this enables a whole pile of functionality (ie, userspace) I'm confident we'll need to submit a few more patches. The only concrete issues I know about are the sys_riscv_flush_icache patches, but as I managed to screw those up on Friday I figured it'd be best to let them bake another week. This tag boots a Fedora root filesystem on QEMU's master branch for me, and before this morning's rebase (from 4.18-rc8 to 4.18) it booted on the HiFive Unleashed. Thanks to Christoph Hellwig and the other guys at WD for getting the new drivers in shape!" * tag 'riscv-for-linus-4.19-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux: dt-bindings: interrupt-controller: SiFive Plaform Level Interrupt Controller dt-bindings: interrupt-controller: RISC-V local interrupt controller RISC-V: Fix !CONFIG_SMP compilation error irqchip: add a SiFive PLIC driver RISC-V: Add the directive for alignment of stvec's value clocksource: new RISC-V SBI timer driver RISC-V: implement low-level interrupt handling RISC-V: add a definition for the SIE SEIE bit RISC-V: remove INTERRUPT_CAUSE_* defines from asm/irq.h RISC-V: simplify software interrupt / IPI code RISC-V: remove timer leftovers RISC-V: Add early printk support via the SBI console RISC-V: Don't increment sepc after breakpoint. RISC-V: implement __lshrti3. RISC-V: Use KBUILD_CFLAGS instead of KCFLAGS when building the vDSO |
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.. | ||
acpi_pm.c | ||
arc_timer.c | ||
arm_arch_timer.c | ||
arm_global_timer.c | ||
armv7m_systick.c | ||
asm9260_timer.c | ||
bcm2835_timer.c | ||
bcm_kona_timer.c | ||
cadence_ttc_timer.c | ||
clksrc_st_lpc.c | ||
clksrc-dbx500-prcmu.c | ||
clps711x-timer.c | ||
cs5535-clockevt.c | ||
dummy_timer.c | ||
dw_apb_timer_of.c | ||
dw_apb_timer.c | ||
em_sti.c | ||
exynos_mct.c | ||
fsl_ftm_timer.c | ||
h8300_timer8.c | ||
h8300_timer16.c | ||
h8300_tpu.c | ||
i8253.c | ||
jcore-pit.c | ||
Kconfig | ||
Makefile | ||
meson6_timer.c | ||
mips-gic-timer.c | ||
mmio.c | ||
mps2-timer.c | ||
mxs_timer.c | ||
nomadik-mtu.c | ||
numachip.c | ||
owl-timer.c | ||
pxa_timer.c | ||
qcom-timer.c | ||
renesas-ostm.c | ||
riscv_timer.c | ||
rockchip_timer.c | ||
samsung_pwm_timer.c | ||
scx200_hrt.c | ||
sh_cmt.c | ||
sh_mtu2.c | ||
sh_tmu.c | ||
sun4i_timer.c | ||
tango_xtal.c | ||
tcb_clksrc.c | ||
tegra20_timer.c | ||
time-armada-370-xp.c | ||
time-efm32.c | ||
time-lpc32xx.c | ||
time-orion.c | ||
time-pistachio.c | ||
timer-atcpit100.c | ||
timer-atlas7.c | ||
timer-atmel-pit.c | ||
timer-atmel-st.c | ||
timer-digicolor.c | ||
timer-fttmr010.c | ||
timer-imx-gpt.c | ||
timer-imx-tpm.c | ||
timer-integrator-ap.c | ||
timer-keystone.c | ||
timer-mediatek.c | ||
timer-npcm7xx.c | ||
timer-nps.c | ||
timer-of.c | ||
timer-of.h | ||
timer-oxnas-rps.c | ||
timer-prima2.c | ||
timer-probe.c | ||
timer-sp804.c | ||
timer-sp.h | ||
timer-sprd.c | ||
timer-stm32.c | ||
timer-sun5i.c | ||
timer-ti-32k.c | ||
timer-ti-dm.c | ||
timer-u300.c | ||
versatile.c | ||
vf_pit_timer.c | ||
vt8500_timer.c | ||
zevio-timer.c |