Re: [PATCH] user-exec: abort if interrupt_request is used

[Richard Henderson <richard.henderson@linaro.org>]

On 8/29/25 21:11, Paolo Bonzini wrote:
> cpu_interrupt() is only called by a few user-mode emulation targets:
> i386, ppc, sparc, arm.  For all of them it is dead code:
> 
> - i386 uses it for the A20 line
> 
> - ppc uses it in cpu_interrupt_exittb(), whose uses (but not the definition)
>    are guarded by CONFIG_USER_ONLY
> 
> - likewise for sparc's cpu_check_irqs()
> 
> Arm has various uses in arm_cpu_update_v* and omap_wfi_write, but they are
> also dead; disentangling the various cpregs accessors from user-mode
> emulation is a work in progress.
> 
> Signed-off-by: Paolo Bonzini<pbonzini@redhat.com>
> ---
>          A quick and dirty patch that I'd like to place before Igor's
>          https://patchew.org/QEMU/20250814160600.2327672-1-imammedo@redhat.com/,
>          to document that interrupt_request is dead for user-mode emulation.
> 
>          v2 ofhttps://patchew.org/QEMU/20250808185905.62776-1-pbonzini@redhat.com/
>          will also remove callers of cpu_interrupt() treewide.

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

r~