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Re: [PATCH v3 16/25] target/arm: Handle Block and Page bits for security
From: |
Peter Maydell |
Subject: |
Re: [PATCH v3 16/25] target/arm: Handle Block and Page bits for security space |
Date: |
Fri, 24 Feb 2023 14:51:19 +0000 |
On Wed, 22 Feb 2023 at 02:34, Richard Henderson
<richard.henderson@linaro.org> wrote:
>
> With Realm security state, bit 55 of a block or page descriptor during
> the stage2 walk becomes the NS bit; during the stage1 walk the bit 5
> NS bit is RES0. With Root security state, bit 11 of the block or page
> descriptor during the stage1 walk becomes the NSE bit.
>
> Rather than collecting an NS bit and applying it later, compute the
> output pa space from the input pa space and unconditionally assign.
> This means that we no longer need to adjust the output space earlier
> for the NSTable bit.
>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
thanks
-- PMM
- Re: [PATCH v3 07/25] target/arm: SCR_EL3.NS may be RES1, (continued)
- [PATCH v3 11/25] target/arm: Adjust the order of Phys and Stage2 ARMMMUIdx, Richard Henderson, 2023/02/21
- [PATCH v3 12/25] target/arm: Introduce ARMMMUIdx_Phys_{Realm,Root}, Richard Henderson, 2023/02/21
- [PATCH v3 19/25] target/arm: Move s1_is_el0 into S1Translate, Richard Henderson, 2023/02/21
- [PATCH v3 20/25] target/arm: Use get_phys_addr_with_struct for stage2, Richard Henderson, 2023/02/21
- [PATCH v3 16/25] target/arm: Handle Block and Page bits for security space, Richard Henderson, 2023/02/21
- Re: [PATCH v3 16/25] target/arm: Handle Block and Page bits for security space,
Peter Maydell <=
- [PATCH v3 13/25] target/arm: Remove __attribute__((nonnull)) from ptw.c, Richard Henderson, 2023/02/21
- [PATCH v3 14/25] target/arm: Pipe ARMSecuritySpace through ptw.c, Richard Henderson, 2023/02/21
- [PATCH v3 15/25] target/arm: NSTable is RES0 for the RME EL3 regime, Richard Henderson, 2023/02/21
- [PATCH v3 08/25] target/arm: Add RME cpregs, Richard Henderson, 2023/02/21
- [PATCH v3 10/25] include/exec/memattrs: Add two bits of space to MemTxAttrs, Richard Henderson, 2023/02/21
- [PATCH v3 18/25] target/arm: Use get_phys_addr_with_struct in S1_ptw_translate, Richard Henderson, 2023/02/21
- [PATCH v3 17/25] target/arm: Handle no-execute for Realm and Root regimes, Richard Henderson, 2023/02/21