From: "Gerd Hoffmann" <kraxel@redhat.com>
To: Ard Biesheuvel <ardb@kernel.org>
Cc: edk2-devel-groups-io <devel@edk2.groups.io>,
"Pawel Polawski" <ppolawsk@redhat.com>,
"Liming Gao" <gaoliming@byosoft.com.cn>,
"Philippe Mathieu-Daudé" <philmd@redhat.com>,
"Jiewen Yao" <jiewen.yao@intel.com>,
"Abner Chang" <abner.chang@hpe.com>,
"Ard Biesheuvel" <ardb+tianocore@kernel.org>,
"Ray Ni" <ray.ni@intel.com>, "Hao A Wu" <hao.a.wu@intel.com>,
"Jian J Wang" <jian.j.wang@intel.com>,
"Jordan Justen" <jordan.l.justen@intel.com>,
"Leif Lindholm" <leif@nuviainc.com>
Subject: Re: [edk2-devel] [PATCH 3/6] OvmfPkg/PlatformPei: unfix PcdPciExpressBaseAddress
Date: Fri, 17 Dec 2021 07:33:49 +0100 [thread overview]
Message-ID: <20211217063349.it337m5tlzyxia4n@sirius.home.kraxel.org> (raw)
In-Reply-To: <CAMj1kXE6scSk2SD+_2_trjYQ8bj+tVYj+xDTPbFWVbN1qeuq4w@mail.gmail.com>
On Thu, Dec 16, 2021 at 01:50:18PM +0100, Ard Biesheuvel wrote:
> On Thu, 16 Dec 2021 at 10:50, Gerd Hoffmann <kraxel@redhat.com> wrote:
> >
> > Will be set by FdtPciHostBridgeLib, so it can't be an fixed when we
> > want use that library.
> >
> > Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
>
> What guarantees that these accesses only ever see the correct, updated value?
For q35 nothing changes (the value is never written).
For microvm the default is set to 0xffffffffffffffff,
simliar to ArmVirt (see patch #6).
take care,
Gerd
next prev parent reply other threads:[~2021-12-17 6:33 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-16 9:50 [PATCH 0/6] OvmfPkg/Microvm/pcie: add pcie support Gerd Hoffmann
2021-12-16 9:50 ` [PATCH 1/6] PciHostBridge: io range is not mandatory Gerd Hoffmann
2021-12-16 9:53 ` [edk2-devel] " Ard Biesheuvel
2021-12-16 9:50 ` [PATCH 2/6] FdtPciHostBridgeLib: " Gerd Hoffmann
2021-12-16 9:50 ` [PATCH 3/6] OvmfPkg/PlatformPei: unfix PcdPciExpressBaseAddress Gerd Hoffmann
2021-12-16 12:50 ` [edk2-devel] " Ard Biesheuvel
2021-12-17 6:33 ` Gerd Hoffmann [this message]
2021-12-16 9:50 ` [PATCH 4/6] OvmfPkg/Microvm/pcie: no vbeshim please Gerd Hoffmann
2021-12-16 9:50 ` [PATCH 5/6] OvmfPkg/Microvm/pcie: mPhysMemAddressWidth tweak Gerd Hoffmann
2021-12-16 9:50 ` [PATCH 6/6] OvmfPkg/Microvm/pcie: add pcie support Gerd Hoffmann
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