Radim Krčmář 009f77a9f0 lib: sbi_hart: reset hstatus ...

hstatus.HU must be cleared, because U-mode could otherwise use the
HLS/HSV instructions.  This would allow U-mode to read physical memory
directly if vgatp and vsatp was 0.

The remaining fields don't seem like a security vulnerability now, but
clearing the whole CSR is not an issue, so do that be safe.

Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Radim Krčmář <rkrcmar@ventanamicro.com>
Link: https://lore.kernel.org/r/20250429142549.3673976-5-rkrcmar@ventanamicro.com
Signed-off-by: Anup Patel <anup@brainfault.org>

2025-04-30 10:14:26 +05:30

..

sbi

lib: sbi_hart: reset hstatus

2025-04-30 10:14:26 +05:30

utils

lib: sbi: Set the scratch allocation to alignment to cacheline size

2025-04-24 09:23:47 +05:30