Re: [RFC PATCH 1/5] entry: Pass pt_regs to irqentry_exit_cond_resched()

[Rik van Riel]

On Fri, 2022-08-05 at 10:30 -0700, ira.weiny@xxxxxxxxx wrote:
> From: Ira Weiny <ira.weiny@xxxxxxxxx>
> 
> Auxiliary pt_regs space needs to be manipulated by the generic
> entry/exit code.
> 
> Ideally irqentry_exit() would take care of handling any auxiliary
> pt_regs on exit.  Unfortunately, irqentry_exit() is not the only exit
> from exception path.  The call to irqentry_exit_cond_resched() from
> xen_pv_evtchn_do_upcall() bypasses irqentry_exit().
> 
> Make irqentry_exit_cond_resched() symmetrical with irqentry_enter()
> by
> passing pt_regs to it.  This makes irqentry_exit_cond_resched()
> capable
> of handling auxiliary pt_regs in future patches.
> 
> Cc: Rik van Riel <riel@xxxxxxxxxxx>
> Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
> Cc: Borislav Petkov <bp@xxxxxxxxx>
> Signed-off-by: Ira Weiny <ira.weiny@xxxxxxxxx>

Acked-by: Rik van Riel <riel@xxxxxxxxxxx>

-- 
All Rights Reversed.

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