Re: [edk2-devel] [PATCH 1/1] OvmfPkg/RiscVVirt: Check "no-map" and mark EfiReservedMemoryType

["Sunil V L" <sunilvl@ventanamicro.com>]

On Mon, Jul 17, 2023 at 07:03:28PM +0100, Pedro Falcato wrote:
> On Mon, Jul 17, 2023 at 5:59 PM Sunil V L <sunilvl@ventanamicro.com> wrote:
> >
> > OpenSBI now marks PMP regions with "no-map" attribute.
> > So, remove the workaround and add the ReservedMemory only
> > when no-map is set so that it follows DT spec.
> 
> Isn't there a concern for supporting older OpenSBI versions? Is there
> no guarantee that it will work?
> 
> This change looks like it should break older OpenSBI versions.
> 
Hi Pedro,

You are right, but it is OK because this workaround was mainly required
for RISC-V ACPI. Currently, ACPI is not fully enabled for RISC-V. So,
there are no practical users who get affected.

Thanks,
Sunl


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