On Fri, May 21, 2021 at 02:19:15PM +0100, Joey Gouly wrote:

Hi Mark,

On Wed, May 19, 2021 at 01:38:50PM +0100, Mark Rutland wrote:

quoted

For various reasons we'd like to convert the bulk of arm64's exception
triage logic to C. As a step towards that, this patch converts the EL1
and EL0 IRQ+FIQ triage logic to C.

Separate C functions are added for the native and compat cases so that
in subsequent patches we can handle native/compat differences in C.

Since the triage functions can now call arm64_apply_bp_hardening()
directly, the do_el0_irq_bp_hardening() wrapper function is removed.

[...]

quoted

-	.macro el0_interrupt_handler, handler:req
-	user_exit_irqoff

Nothing is using the user_exit_irqoff macro anymore, it could be
removed?

Sure, I'll get rid of that.

quoted

-	enable_da
-
-	tbz	x22, #55, 1f
-	bl	do_el0_irq_bp_hardening
-1:
-	irq_handler	\handler
-	.endm
-

[..]

Reviewed-by: Joey Gouly <joey.gouly@arm.com>

Thanks!

Mark.

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