Palmer Dabbelt 6beb6bc5a8 Merge patch series "RISC-V: Test th.sxstatus.MAEE bit before enabling MAEE" ... Christoph Müllner <christoph.muellner@vrull.eu> says: Currently, the Linux kernel suffers from a boot regression when running on the c906 QEMU emulation. Details have been reported here by Björn Töpel: https://lists.gnu.org/archive/html/qemu-devel/2024-01/msg04766.html The main issue is, that Linux enables XTheadMae for CPUs that have a T-Head mvendorid but QEMU maintainers don't want to emulate a CPU that uses reserved bits in PTEs. See also the following discussion for more context: https://lists.gnu.org/archive/html/qemu-devel/2024-02/msg00775.html This series renames "T-Head PBMT" to "MAE"/"XTheadMae" and only enables it if the th.sxstatus.MAEE bit is set. The th.sxstatus CSR is documented here: https://github.com/T-head-Semi/thead-extension-spec/blob/master/xtheadsxstatus.adoc XTheadMae is documented here: https://github.com/T-head-Semi/thead-extension-spec/blob/master/xtheadmae.adoc The QEMU patch to emulate th.sxstatus with the MAEE bit not set is here: https://lore.kernel.org/all/20240329120427.684677-1-christoph.muellner@vrull.eu/ After applying the referenced QEMU patch, this patchset allows to successfully boot a C906 QEMU system emulation ("-cpu thead-c906"). * b4-shazam-lts: riscv: T-Head: Test availability bit before enabling MAE errata riscv: thead: Rename T-Head PBMT to MAE Link: https://lore.kernel.org/r/20240407213236.2121592-1-christoph.muellner@vrull.eu Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>		2024-04-26 10:21:57 -07:00
..
boot	RISC-V Patches for the 6.9 Merge Window	2024-03-22 10:41:13 -07:00
configs	RISC-V Patches for the 6.9 Merge Window	2024-03-22 10:41:13 -07:00
crypto	crypto: riscv - add vector crypto accelerated AES-CBC-CTS	2024-03-20 08:56:11 -07:00
errata	Merge patch series "RISC-V: Test th.sxstatus.MAEE bit before enabling MAEE"	2024-04-26 10:21:57 -07:00
include	Merge patch series "RISC-V: Test th.sxstatus.MAEE bit before enabling MAEE"	2024-04-26 10:21:57 -07:00
kernel	riscv: process: Fix kernel gp leakage	2024-04-04 12:35:05 -07:00
kvm	KVM/riscv changes for 6.9	2024-03-11 10:10:48 -04:00
lib	RISC-V Patches for the 6.9 Merge Window	2024-03-22 10:41:13 -07:00
mm	Merge patch the fixes from "riscv: 64-bit NOMMU fixes and enhancements"	2024-04-09 11:41:01 -07:00
net	bpf, riscv64/cfi: Support kCFI + BPF on riscv64	2024-03-06 15:18:16 -08:00
purgatory	riscv: Use SYM_*() assembly macros instead of deprecated ones	2023-11-06 09:42:47 -08:00
tools	riscv: Check relocations at compile time	2023-04-19 07:46:32 -07:00
Kbuild	RISC-V: hook new crypto subdir into build-system	2024-01-22 17:55:17 -08:00
Kconfig	RISC-V Patches for the 6.9 Merge Window	2024-03-22 10:41:13 -07:00
Kconfig.debug	riscv: Add tests for riscv module loading	2023-11-07 14:59:32 -08:00
Kconfig.errata	riscv: thead: Rename T-Head PBMT to MAE	2024-04-25 10:22:33 -07:00
Kconfig.socs	riscv: dts: Move BUILTIN_DTB_SOURCE to common Kconfig	2024-03-06 00:08:32 +00:00
Makefile	riscv: compat_vdso: install compat_vdso.so.dbg to /lib/modules/*/vdso/	2024-03-26 14:08:02 -07:00
Makefile.postlink	kbuild: remove ARCH_POSTLINK from module builds	2023-10-28 21:10:08 +09:00