From: Richard Henderson <richard.henderson@linaro.org>
To: Peter Maydell <peter.maydell@linaro.org>
Cc: QEMU Developers <qemu-devel@nongnu.org>
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 [thread overview]
Message-ID: <13b8c253-d3da-3bca-de83-ea9422d5f30f@linaro.org> (raw)
In-Reply-To: <CAFEAcA9+8XBXDqL8JfTpS8q05XwaZ+Ck1nqAhTLsyN_=WCjXNA@mail.gmail.com>
On 1/22/19 7:29 AM, Peter Maydell wrote:
> On Thu, 10 Jan 2019 at 12:18, Richard Henderson
> <richard.henderson@linaro.org> 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 <richard.henderson@linaro.org>
>> ---
>> 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~
next prev parent reply other threads:[~2019-01-22 19:37 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-10 12:17 [Qemu-devel] [PATCH 00/11] target/arm: Implement ARMv8.5-BTI Richard Henderson
2019-01-10 12:17 ` [Qemu-devel] [PATCH 01/11] target/arm: Introduce isar_feature_aa64_bti Richard Henderson
2019-01-22 12:01 ` Peter Maydell
2019-01-10 12:17 ` [Qemu-devel] [PATCH 02/11] target/arm: Add PSTATE.BTYPE Richard Henderson
2019-01-22 12:08 ` Peter Maydell
2019-01-10 12:17 ` [Qemu-devel] [PATCH 03/11] target/arm: Add BT and BTYPE to tb->flags Richard Henderson
2019-01-22 12:57 ` Peter Maydell
2019-01-10 12:17 ` [Qemu-devel] [PATCH 04/11] target/arm: Record the GP bit for a page in MemTxAttrs Richard Henderson
2019-01-22 13:26 ` Peter Maydell
2019-01-28 21:08 ` Richard Henderson
2019-01-29 9:55 ` Peter Maydell
2019-01-29 14:38 ` Richard Henderson
2019-01-10 12:17 ` [Qemu-devel] [PATCH 05/11] target/arm: Default handling of BTYPE during translation Richard Henderson
2019-01-22 13:50 ` Peter Maydell
2019-01-10 12:17 ` [Qemu-devel] [PATCH 06/11] target/arm: Reset btype for direct branches and syscalls Richard Henderson
2019-01-22 14:12 ` Peter Maydell
2019-01-28 21:28 ` Richard Henderson
2019-01-29 9:57 ` Peter Maydell
2019-01-29 14:05 ` Richard Henderson
2019-01-29 14:06 ` Peter Maydell
2019-01-10 12:17 ` [Qemu-devel] [PATCH 07/11] target/arm: Set btype for indirect branches Richard Henderson
2019-01-22 15:28 ` Peter Maydell
2019-01-10 12:17 ` [Qemu-devel] [PATCH 08/11] target/arm: Add guarded_pages cpu property for user-only Richard Henderson
2019-01-22 15:29 ` Peter Maydell
2019-01-22 15:42 ` Richard Henderson [this message]
2019-01-22 16:57 ` Peter Maydell
2019-01-28 22:01 ` Richard Henderson
2019-01-10 12:17 ` [Qemu-devel] [PATCH 09/11] target/arm: Enable BTI for -cpu max Richard Henderson
2019-01-22 15:30 ` Peter Maydell
2019-01-10 12:17 ` [Qemu-devel] [PATCH 10/11] linux-user/aarch64: Reset btype for signal handlers Richard Henderson
2019-01-22 15:46 ` Peter Maydell
2019-01-10 12:17 ` [Qemu-devel] [PATCH 11/11] tests/tcg/aarch64: Add bti smoke test Richard Henderson
2019-01-31 18:05 ` [Qemu-devel] [PATCH 00/11] target/arm: Implement ARMv8.5-BTI no-reply
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