acrn-kernel/arch/riscv
Clément Léger a38c1e766f riscv: fix misaligned access handling of C.SWSP and C.SDSP
[ Upstream commit 22e0eb04837a63af111fae35a92f7577676b9bc8 ]

This is a backport of a fix that was done in OpenSBI: ec0559eb315b
("lib: sbi_misaligned_ldst: Fix handling of C.SWSP and C.SDSP").

Unlike C.LWSP/C.LDSP, these encodings can be used with the zero
register, so checking that the rs2 field is non-zero is unnecessary.

Additionally, the previous check was incorrect since it was checking
the immediate field of the instruction instead of the rs2 field.

Fixes: 956d705dd2 ("riscv: Unaligned load/store handling for M_MODE")
Signed-off-by: Clément Léger <cleger@rivosinc.com>
Link: https://lore.kernel.org/r/20231103090223.702340-1-cleger@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-12-13 18:39:16 +01:00
..
boot
configs
errata
include riscv: mm: Update the comment of CONFIG_PAGE_OFFSET 2023-11-28 17:07:19 +00:00
kernel riscv: fix misaligned access handling of C.SWSP and C.SDSP 2023-12-13 18:39:16 +01:00
kvm
lib
mm riscv: correct pt_level name via pgtable_l5/4_enabled 2023-11-28 17:07:20 +00:00
net riscv, bpf: Sign-extend return values 2023-10-19 23:08:53 +02:00
purgatory
Kbuild
Kconfig
Kconfig.debug
Kconfig.erratas
Kconfig.socs
Makefile