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android_kernel_xiaomi_sm8450/arch/riscv
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Guo Ren 8eee3521bc riscv: Fixup race condition on PG_dcache_clean in flush_icache_pte 
commit 950b879b7f0251317d26bae0687e72592d607532 upstream.

In commit 588a513d3425 ("arm64: Fix race condition on PG_dcache_clean
in __sync_icache_dcache()"), we found RISC-V has the same issue as the
previous arm64. The previous implementation didn't guarantee the correct
sequence of operations, which means flush_icache_all() hasn't been
called when the PG_dcache_clean was set. That would cause a risk of page
synchronization.

Fixes: 08f051eda3 ("RISC-V: Flush I$ when making a dirty page executable")
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230127035306.1819561-1-guoren@kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-02-15 17:22:26 +01:00
..
boot riscv: dts: sifive unleashed: Add PWM controlled LEDs 2022-12-02 17:39:57 +01:00
configs riscv: defconfig: enable gpio support for HiFive Unleashed 2021-01-27 11:55:01 +01:00
include riscv: uaccess: fix type of 0 variable on error in get_user() 2023-01-14 10:16:49 +01:00
kernel exit: Add and use make_task_dead. 2023-02-01 08:23:19 +01:00
lib riscv: use memcpy based uaccess for nommu again 2020-10-04 10:27:07 -07:00
mm riscv: Fixup race condition on PG_dcache_clean in flush_icache_pte 2023-02-15 17:22:26 +01:00
net riscv, bpf: Fix potential NULL dereference 2021-11-02 19:48:21 +01:00
Kbuild riscv: Allow device trees to be built into the kernel 2020-05-18 11:38:05 -07:00
Kconfig riscv: topology: fix default topology reporting 2022-10-30 09:41:19 +01:00
Kconfig.debug RISC-V: Remove EARLY_PRINTK support 2018-12-17 10:23:46 -08:00
Kconfig.socs RISC-V: Remove CLINT related code from timer and arch 2020-08-20 10:58:13 -07:00
Makefile riscv: disable generation of unwind tables 2023-02-15 17:22:19 +01:00