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Re: [Qemu-devel] [PATCH 08/11] target/arm: Add guarded_pages cpu propert
From: |
Richard Henderson |
Subject: |
Re: [Qemu-devel] [PATCH 08/11] target/arm: Add guarded_pages cpu property for user-only |
Date: |
Tue, 22 Jan 2019 07:42:27 -0800 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 |
On 1/22/19 7:29 AM, Peter Maydell wrote:
> On Thu, 10 Jan 2019 at 12:18, Richard Henderson
> <address@hidden> wrote:
>>
>> While waiting for a proper userland ABI, allow static test
>> cases to be written assuming that GP is set for all pages.
>>
>> Signed-off-by: Richard Henderson <address@hidden>
>> ---
>> target/arm/cpu.h | 4 ++++
>> target/arm/cpu64.c | 18 ++++++++++++++++++
>> target/arm/translate-a64.c | 8 +++++++-
>> 3 files changed, 29 insertions(+), 1 deletion(-)
>
> This is OK code-wise but I'm a bit wary of committing it
> because then we're stuck with the property forever even
> if it turns out to be irrelevant to whatever the userland
> ABI eventually is.
That's surely simply a matter of documentation.
"Don't rely on this property: it will go away."
r~
- [Qemu-devel] [PATCH 06/11] target/arm: Reset btype for direct branches and syscalls, (continued)
[Qemu-devel] [PATCH 07/11] target/arm: Set btype for indirect branches, Richard Henderson, 2019/01/10
[Qemu-devel] [PATCH 08/11] target/arm: Add guarded_pages cpu property for user-only, Richard Henderson, 2019/01/10
[Qemu-devel] [PATCH 09/11] target/arm: Enable BTI for -cpu max, Richard Henderson, 2019/01/10
[Qemu-devel] [PATCH 10/11] linux-user/aarch64: Reset btype for signal handlers, Richard Henderson, 2019/01/10
[Qemu-devel] [PATCH 11/11] tests/tcg/aarch64: Add bti smoke test, Richard Henderson, 2019/01/10
Re: [Qemu-devel] [PATCH 00/11] target/arm: Implement ARMv8.5-BTI, no-reply, 2019/01/31