From: "Gerd Hoffmann" <kraxel@redhat.com>
To: sebastien.boeuf@intel.com
Cc: devel@edk2.groups.io, jiewen.yao@intel.com
Subject: Re: [PATCH] OvmfPkg: Report proper address space width for Cloud Hypervisor
Date: Thu, 19 Jan 2023 08:54:00 +0100 [thread overview]
Message-ID: <20230119075400.wb2p35gboegb3rdp@sirius.home.kraxel.org> (raw)
In-Reply-To: <4354b16fa5364a6b0e77e787582136e45e5f325b.1674051530.git.sebastien.boeuf@intel.com>
On Wed, Jan 18, 2023 at 03:20:15PM +0100, sebastien.boeuf@intel.com wrote:
> From: Sebastien Boeuf <sebastien.boeuf@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@intel.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
prev parent reply other threads:[~2023-01-19 7:54 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-18 14:20 [PATCH] OvmfPkg: Report proper address space width for Cloud Hypervisor Boeuf, Sebastien
2023-01-19 7:54 ` Gerd Hoffmann [this message]
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