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Re: [Qemu-devel] [PATCH 2/2] hw/pci-host/x86: extend the 64-bit PCI hole

From: Laszlo Ersek
Subject: Re: [Qemu-devel] [PATCH 2/2] hw/pci-host/x86: extend the 64-bit PCI hole relative to the fw-assigned base
Date: Wed, 26 Sep 2018 13:35:14 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1

On 09/26/18 13:12, Laszlo Ersek wrote:

> (4) append a new patch, for "bios-tables-test", so that the ACPI gen
> change is validated as part of the test suite, on SeaBIOS/q35.
> Regarding (4):
> - is it OK if I add the test only for Q35?
> - what guest RAM size am I allowed to use in the test suite? In my own
> SeaBIOS/Q35 reproducer I currently use 5GB, but I'm not sure if it's
> acceptable for the test suite.

And, even if the patch's effect can be shown with little guest DRAM, the
test case still requires a multi-gig ivshmem-plain device. In
"tests/ivshmem-test.c", I see how it is set up -- the backend is set up
with shm_open(). The file created under /dev/shm (on Linux) might
require host RAM just the same as normal guest DRAM (especially with
memory overcommit disabled on the host), correct?


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