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List:       qemu-riscv
Subject:    Re: [PATCH v2 1/7] target: rename all *_do_interupt functions to _do_interrupt_locked
From:       Richard Henderson <richard.henderson () linaro ! org>
Date:       2020-08-31 21:14:21
Message-ID: 45ce8b56-a00d-9504-7eeb-e4cce4efed31 () linaro ! org
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On 8/19/20 11:28 AM, Robert Foley wrote:
> The rename of all *_do_interrupt functions to *_do_interrupt_locked
> is preparation for pushing the BQL lock around these functions
> down into the per-arch implementation of *_do_interrupt.
> In a later patch which pushes down the lock, we will add
> a new *_do_interrupt function which grabs the BQL and calls to
> *_do_interrupt_locked.
> 
> This is the first patch in a series of transitions to move the
> BQL down into the do_interrupt per arch function.  This set of
> transitions is needed to maintain bisectability.
> 
> The purpose of this set of changes is to set the groundwork
> so that an arch could move towards removing
> the BQL from the cpu_handle_interrupt/exception paths.
> 
> This approach was suggested by Paolo Bonzini.
> For reference, here are key posts in the discussion, explaining
> the reasoning/benefits of this approach.
> 
> https://lists.gnu.org/archive/html/qemu-devel/2020-08/msg00784.html
> https://lists.gnu.org/archive/html/qemu-devel/2020-08/msg01517.html
> https://lists.gnu.org/archive/html/qemu-devel/2020-07/msg08731.html
> https://lists.gnu.org/archive/html/qemu-devel/2020-08/msg00044.html
> 
> Signed-off-by: Robert Foley <robert.foley@linaro.org>
> ---

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~


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