[edk2-devel] [PATCH] OvmfPkg: Report proper address space width for Cloud Hypervisor

[Gerd Hoffmann]

On Wed, Jan 18, 2023 at 03:20:15PM +0100, sebastien.boeuf at intel.com wrote:
> From: Sebastien Boeuf <sebastien.boeuf at intel.com>
> 
> The address space width isn't properly calculated when the platform is
> Cloud Hypervisor. The function PlatformAddressWidthFromCpuid() must not
> be invoked with the QemuQuirk boolean set to true in the Cloud
> Hypervisor case.
> 
> Relying on the host bridge identifier, we can set the QemuQuirk to the
> appropriate value, which results in the address space size to be
> correctly returned for Cloud Hypervisor.
> 
> Having the correct address space width allows the code to calculate
> dynamically the MMIO space available for devices in the 64-bit address
> space, preventing it to fallback onto the default value (32GiB).
> 
> Signed-off-by: Sebastien Boeuf <sebastien.boeuf at intel.com>

Acked-by: Gerd Hoffmann <kraxel at redhat.com>



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