Alexandre Ghiti 1ff95eb2be riscv: Fix RISCV_ALTERNATIVE_EARLY ...

RISCV_ALTERNATIVE_EARLY will issue sbi_ecall() very early in the boot
process, before the first memory mapping is setup so we can't have any
instrumentation happening here.

In addition, when the kernel is relocatable, we must also not issue any
relocation this early since they would have been patched virtually only.

So, instead of disabling instrumentation for the whole kernel/sbi.c file
and compiling it with -fno-pie, simply move __sbi_ecall() and
__sbi_base_ecall() into their own file where this is fixed.

Reported-by: Conor Dooley <conor.dooley@microchip.com>
Closes: https://lore.kernel.org/linux-riscv/20240813-pony-truck-3e7a83e9759e@spud/
Reported-by: syzbot+cfbcb82adf6d7279fd35@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/linux-riscv/00000000000065062c061fcec37b@google.com/
Fixes: 1745cfafeb ("riscv: don't use global static vars to store alternative data")
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20240829165048.49756-1-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

2024-09-03 07:57:55 -07:00

..

boot

Merge tag 'riscv-for-linus-6.11-mw2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

2024-07-27 10:14:34 -07:00

configs

RISC-V: run savedefconfig for defconfig

2024-07-22 10:57:47 -07:00

crypto

crypto: riscv - add vector crypto accelerated AES-CBC-CTS

2024-03-20 08:56:11 -07:00

errata

riscv: Extend cpufeature.c to detect vendor extensions

2024-07-22 15:36:54 -07:00

include

riscv: Fix RISCV_ALTERNATIVE_EARLY

2024-09-03 07:57:55 -07:00

kernel

riscv: Fix RISCV_ALTERNATIVE_EARLY

2024-09-03 07:57:55 -07:00

kvm

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2024-07-20 12:41:03 -07:00

lib

riscv: Optimize crc32 with Zbc extension

2024-07-10 13:19:50 -07:00

mm

riscv: Do not restrict memory size because of linear mapping on nommu

2024-09-03 07:57:27 -07:00

net

Merge tag 'riscv-for-linus-6.11-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

2024-07-20 09:11:27 -07:00

purgatory

riscv/purgatory: align riscv_kernel_entry

2024-08-01 07:14:34 -07:00

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

riscv: Fix toolchain vector detection

2024-09-03 07:57:05 -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

RISC-V: drop SOC_VIRT for ARCH_VIRT

2024-04-10 11:37:50 +01:00

Kconfig.vendor

riscv: Extend cpufeature.c to detect vendor extensions

2024-07-22 15:36:54 -07:00

Makefile

Merge patch series "riscv: Apply Zawrs when available"

2024-07-12 08:55:29 -07:00

Makefile.postlink

kbuild: remove ARCH_POSTLINK from module builds

2023-10-28 21:10:08 +09:00