Re: [PATCH v9 11/17] target/riscv: mmu changes for zicfiss shadow stack protection

[Deepak Gupta]

On Tue, Aug 27, 2024 at 03:59:08PM +1000, Alistair Francis wrote:

On Tue, Aug 27, 2024 at 1:31 AM Deepak Gupta <de...@rivosinc.com> wrote:

zicfiss protects shadow stack using new page table encodings PTE.W=0,
PTE.R=0 and PTE.X=0. This encoding is reserved if zicfiss is not

Shouldn't this be R=0, W=1, and X=0 ?

Yes. A typo. Will fix.

Alistair

implemented or if shadow stack are not enabled.
Loads on shadow stack memory are allowed while stores to shadow stack