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android_kernel_samsung_sm8650/arch/riscv
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Mathis Salmen 5d12b36d72 riscv: add icache flush for nommu sigreturn trampoline 
commit 8d736482749f6d350892ef83a7a11d43cd49981e upstream.

In a NOMMU kernel, sigreturn trampolines are generated on the user
stack by setup_rt_frame. Currently, these trampolines are not instruction
fenced, thus their visibility to ifetch is not guaranteed.

This patch adds a flush_icache_range in setup_rt_frame to fix this
problem.

Signed-off-by: Mathis Salmen <mathis.salmen@matsal.de>
Fixes: 6bd33e1ece ("riscv: add nommu support")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20230406101130.82304-1-mathis.salmen@matsal.de
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-04-20 12:35:12 +02:00
..
boot riscv: dts: sifive: fu740: fix size of pcie 32bit memory 2023-01-24 07:24:37 +01:00
configs riscv: enable CD-ROM file systems in defconfig 2022-08-25 17:01:09 -07:00
errata Merge patch series "Some style cleanups for recent extension additions" 2022-10-13 08:46:31 -07:00
include riscv: mm: Fix incorrect ASID argument when flushing TLB 2023-03-30 12:49:28 +02:00
kernel riscv: add icache flush for nommu sigreturn trampoline 2023-04-20 12:35:12 +02:00
kvm riscv/kvm: Fix VM hang in case of timer delta being zero. 2023-04-06 12:10:42 +02:00
lib riscv: lib: uaccess: fix CSR_STATUS SR_SUM bit 2022-08-10 14:06:31 -07:00
mm riscv: mm: Fix incorrect ASID argument when flushing TLB 2023-03-30 12:49:28 +02:00
net riscv, bpf: Emit fixed-length instructions for BPF_PSEUDO_FUNC 2022-12-31 13:32:23 +01:00
purgatory riscv/purgatory: Omit use of bin2c 2022-08-11 09:32:34 -07:00
Kbuild riscv: move errata/ and kvm/ builds to arch/riscv/Kbuild 2022-06-01 22:26:32 -07:00
Kconfig riscv: ftrace: Fixup panic by disabling preemption 2023-04-06 12:10:35 +02:00
Kconfig.debug RISC-V: Remove EARLY_PRINTK support 2018-12-17 10:23:46 -08:00
Kconfig.erratas riscv: make t-head erratas depend on MMU 2022-09-17 01:48:22 -07:00
Kconfig.socs riscv: Kconfig: Style cleanups 2022-06-30 19:26:16 -07:00
Makefile riscv: Handle zicsr/zifencei issues between clang and binutils 2023-03-30 12:49:28 +02:00