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[Qemu-devel] [Bug 1824744] Re: ivshmem PCI device exposes wrong endianne
From: |
shawn |
Subject: |
[Qemu-devel] [Bug 1824744] Re: ivshmem PCI device exposes wrong endianness on ppc64le |
Date: |
Mon, 15 Apr 2019 02:00:50 -0000 |
** Summary changed:
- ivshmem device PCI device exposes wrong endianness on ppc64le
+ ivshmem PCI device exposes wrong endianness on ppc64le
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https://bugs.launchpad.net/bugs/1824744
Title:
ivshmem PCI device exposes wrong endianness on ppc64le
Status in QEMU:
New
Bug description:
On a ppc64le host with a ppc64le guest running on QEMU 3.1.0 when an
ivshmem device is used, the ivshmem device appears to expose the wrong
endianness for the values in BAR 0.
For example, when the guest is assigned an ivshmem device ID of 1, the
IVPosition register (u32, offset 8 in BAR 0) returns 0x1000000 instead
of 0x1. I tested on an x86_64 machine and the IVPosition reads 0x1 as
expected.
It seems possible that there's a ppc64*==bigendian assumption
somewhere that is erroneously affecting ppc64le.
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