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From: Peter Maydell <peter.maydell@linaro.org>
To: Richard Henderson <richard.henderson@linaro.org>
Cc: qemu-devel@nongnu.org, "Philippe Mathieu-Daudé" <f4bug@amsat.org>
Subject: Re: [PATCH v2 4/9] accel/tcg: Add guest_base_signed_addr32 for user-only
Date: Thu, 3 Mar 2022 15:14:18 +0000	[thread overview]
Message-ID: <CAFEAcA9Rf_q9v=D7BcyQSrUUaLEDPWO3ZV0XhcpV4qRR=bjkzg@mail.gmail.com> (raw)
In-Reply-To: <20220227020413.11741-5-richard.henderson@linaro.org>

On Sun, 27 Feb 2022 at 02:08, Richard Henderson
<richard.henderson@linaro.org> wrote:
>
> While the host may prefer to treat 32-bit addresses as signed,
> there are edge cases of guests that cannot be implemented with
> addresses 0x7fff_ffff and 0x8000_0000 being non-consecutive.
>
> Therefore, default to guest_base_signed_addr32 false, and allow
> probe_guest_base to determine whether it is possible to set it
> to true.  A tcg backend which sets TCG_TARGET_SIGNED_ADDR32 will
> have to cope with either setting for user-only.
>
> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>


Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

thanks
-- PMM


  reply	other threads:[~2022-03-03 15:17 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-27  2:04 [PATCH v2 0/9] tcg: support 32-bit guest addresses as signed Richard Henderson
2022-02-27  2:04 ` [PATCH v2 1/9] tcg: Add TCG_TARGET_SIGNED_ADDR32 Richard Henderson
2022-02-27  2:04 ` [PATCH v2 2/9] accel/tcg: Split out g2h_tlbe Richard Henderson
2022-02-27  2:04 ` [PATCH v2 3/9] accel/tcg: Support TCG_TARGET_SIGNED_ADDR32 for softmmu Richard Henderson
2022-02-27 22:32   ` Philippe Mathieu-Daudé
2022-03-03 15:14   ` Peter Maydell
2022-02-27  2:04 ` [PATCH v2 4/9] accel/tcg: Add guest_base_signed_addr32 for user-only Richard Henderson
2022-03-03 15:14   ` Peter Maydell [this message]
2022-02-27  2:04 ` [PATCH v2 5/9] linux-user: Support TCG_TARGET_SIGNED_ADDR32 Richard Henderson
2022-02-27 22:48   ` Philippe Mathieu-Daudé
2022-02-27  2:04 ` [PATCH v2 6/9] tcg/aarch64: " Richard Henderson
2022-03-03 15:04   ` Peter Maydell
2022-03-03 15:43     ` Richard Henderson
2022-03-03 16:19       ` Peter Maydell
2022-02-27  2:04 ` [PATCH v2 7/9] tcg/mips: " Richard Henderson
2022-02-27 22:51   ` Philippe Mathieu-Daudé
2022-02-27  2:04 ` [PATCH v2 8/9] tcg/riscv: " Richard Henderson
2022-02-27  2:04 ` [PATCH v2 9/9] tcg/loongarch64: " Richard Henderson
2022-02-27 22:52   ` Philippe Mathieu-Daudé

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