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Re: [PATCH v2 1/7] accel/tcg: introduce CF_NOIRQ

From: Richard Henderson
Subject: Re: [PATCH v2 1/7] accel/tcg: introduce CF_NOIRQ
Date: Fri, 26 Nov 2021 10:42:33 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.14.0

On 11/25/21 4:41 PM, Alex Bennée wrote:
Here we introduce a new compiler flag to disable the checking of exit
request (icount_decr.u32). This is useful when we want to ensure the
next block cannot be preempted by an asynchronous event.

Suggested-by: Richard Henderson<richard.henderson@linaro.org>
Signed-off-by: Alex Bennée<alex.bennee@linaro.org>

   - split from larger patch
   - reword the check in cpu_handle_interrupt and scope to CF_NOIRQ only
  include/exec/exec-all.h   |  1 +
  include/exec/gen-icount.h | 21 +++++++++++++++++----
  2 files changed, 18 insertions(+), 4 deletions(-)

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


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