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Re: [PATCH v2 11/17] linux-user/aarch64: Implement PROT_MTE
From: |
Peter Maydell |
Subject: |
Re: [PATCH v2 11/17] linux-user/aarch64: Implement PROT_MTE |
Date: |
Thu, 25 Jun 2020 17:53:34 +0100 |
On Fri, 5 Jun 2020 at 05:17, Richard Henderson
<richard.henderson@linaro.org> wrote:
>
> Remember the PROT_MTE bit as PAGE_TARGET_2.
> Otherwise this does not yet have effect.
>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
> ---
> include/exec/cpu-all.h | 1 +
> linux-user/syscall_defs.h | 1 +
> linux-user/mmap.c | 20 ++++++++++++--------
> 3 files changed, 14 insertions(+), 8 deletions(-)
>
> diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h
> index 3cac7750e4..7ff10a8b08 100644
> --- a/include/exec/cpu-all.h
> +++ b/include/exec/cpu-all.h
> @@ -286,6 +286,7 @@ extern intptr_t qemu_host_page_mask;
> #endif
> /* Target-specific bits that will be used via page_get_flags(). */
> #define PAGE_TARGET_1 0x0080
> +#define PAGE_TARGET_2 0x0100
This is the same as the bsd-user-only PAGE_RESERVED,
which seems unnecessarily confusing given we're not hurting
for available bits.
Otherwise
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
thanks
-- PMM
- Re: [PATCH v2 06/17] linux-user: Do not use guest_addr_valid for h2g_valid, (continued)
- [PATCH v2 07/17] linux-user: Fix guest_addr_valid vs reserved_va, Richard Henderson, 2020/06/05
- [PATCH v2 08/17] exec: Add support for TARGET_TAGGED_ADDRESSES, Richard Henderson, 2020/06/05
- [PATCH v2 09/17] linux-user/aarch64: Implement PR_TAGGED_ADDR_ENABLE, Richard Henderson, 2020/06/05
- [PATCH v2 10/17] linux-user/aarch64: Implement PR_MTE_TCF and PR_MTE_TAG, Richard Henderson, 2020/06/05
- [PATCH v2 11/17] linux-user/aarch64: Implement PROT_MTE, Richard Henderson, 2020/06/05
- Re: [PATCH v2 11/17] linux-user/aarch64: Implement PROT_MTE,
Peter Maydell <=
- [PATCH v2 12/17] linux-user/aarch64: Pass syndrome to EXC_*_ABORT, Richard Henderson, 2020/06/05
- [PATCH v2 13/17] linux-user/aarch64: Signal SEGV_MTESERR for sync tag check fault, Richard Henderson, 2020/06/05
- [PATCH v2 14/17] linux-user/aarch64: Signal SEGV_MTEAERR for async tag check error, Richard Henderson, 2020/06/05
- [PATCH v2 15/17] target/arm: Add allocation tag storage for user mode, Richard Henderson, 2020/06/05
- [PATCH v2 16/17] target/arm: Enable MTE for user-only, Richard Henderson, 2020/06/05
- [PATCH v2 17/17] tests/tcg/aarch64: Add mte smoke tests, Richard Henderson, 2020/06/05
- Re: [PATCH v2 00/17] target-arm: Implement ARMv8.5-MemTag, user mode, Peter Maydell, 2020/06/25