Re: [edk2-devel] [PATCH 2/2] MdeModulePkg/DxeCore: Fix stack overflow issue due to nested interrupts

["Michael Brown" <mcb30@ipxe.org>]

On 29/02/2024 19:26, Michael D Kinney wrote:
> I think one advantage of this new proposal is to prevent
> an extra level of nesting and use of stack resources in
> that extra level.

I think that's a negligible benefit.  In the scenario as I outlined for 
NestedInterruptTplLib, there is potentially one more interrupt stack 
frame, but in that case the inner handler can only consume a small and 
fixed amount of stack space since it will not call RestoreTPL() (and so 
will not dispatch events, etc).

Thanks,

Michael



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