From: "Gerd Hoffmann" <kraxel@redhat.com>
To: Laszlo Ersek <lersek@redhat.com>
Cc: Michael Brown <mcb30@ipxe.org>, devel@edk2.groups.io
Subject: Re: [PATCH 2/2] OvmfPkg: Relax assertion that interrupts do not occur at TPL_HIGH_LEVEL
Date: Tue, 9 May 2023 11:42:15 +0200 [thread overview]
Message-ID: <a7ywfgacfjandirss5dmgq33kr4h7uz4giuhafm4c5bslgbfub@rpnzxk7dv3ng> (raw)
In-Reply-To: <d7c6dee6-fb05-559b-e4ba-a3f5af0951ea@redhat.com>
Hi,
> Here's why: I'd been used to Microsoft *not* cooperating usefully in
> Windows-on-QEMU/KVM situations. But this instance was totally different.
> In fact I'm still a bit shocked, in the positive sense. We got a fast
> and helpful, to-the-point response. It's a first, considering my own
> experience, and it has strongly changed my impression of Microsoft's
> Windows team. I'd like us to acknowledge that in the commit message, if
> possible.
And Microsoft saying this is tsc calibration code also gives us a
workaround: When using 'qemu -cpu host,hv-frequencies=on' the windows
installer iso boots just fine, most likely because cdboot.efi queries
the hypervisor for the tsc frequency instead of running the calibration
loop.
take care,
Gerd
next prev parent reply other threads:[~2023-05-09 9:42 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-03 7:19 [PATCH v2 1/1] OvmfPkg/NestedInterruptTplLib: replace ASSERT() with a warning logged Gerd Hoffmann
2023-05-05 14:10 ` [edk2-devel] " Michael Brown
2023-05-05 18:56 ` Laszlo Ersek
2023-05-05 23:27 ` Michael Brown
2023-05-05 23:57 ` Ard Biesheuvel
2023-05-08 6:45 ` Laszlo Ersek
2023-05-09 9:13 ` Ard Biesheuvel
2023-05-08 6:38 ` Laszlo Ersek
2023-05-08 21:31 ` [PATCH 0/2] OvmfPkg: Relax assertion that interrupts do not occur at TPL_HIGH_LEVEL Michael Brown
2023-05-09 7:05 ` Gerd Hoffmann
2023-05-09 8:43 ` Laszlo Ersek
2023-05-09 12:08 ` [edk2-devel] " Michael Brown
2023-05-09 13:27 ` Laszlo Ersek
[not found] ` <20230508213100.3949708-1-mcb30@ipxe.org>
2023-05-08 21:31 ` [PATCH 1/2] OvmfPkg: Clarify invariants for NestedInterruptTplLib Michael Brown
2023-05-08 21:31 ` [PATCH 2/2] OvmfPkg: Relax assertion that interrupts do not occur at TPL_HIGH_LEVEL Michael Brown
2023-05-09 8:35 ` Laszlo Ersek
2023-05-09 9:42 ` Gerd Hoffmann [this message]
2023-05-09 12:04 ` [edk2-devel] " Michael Brown
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