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[Qemu-devel] [Bug 1735049] Re: Need MTTCG support for x86 guests
From: |
Emilio G. Cota |
Subject: |
[Qemu-devel] [Bug 1735049] Re: Need MTTCG support for x86 guests |
Date: |
Wed, 05 Sep 2018 14:48:09 -0000 |
Patches are now on the list to enable MTTCG for i386 and x86_64 guests.
See v2 here:
https://lists.gnu.org/archive/html/qemu-devel/2018-09/msg00237.html
I'm hoping these patches will be in the next QEMU release.
Regarding your last question:
> For instance, has support for strong-on-weak memory consistency been added
> into QEMU GIT at this point?
Yes, TCG inserts the appropriate barriers around memory accesses since
commit b32dc3370a ("tcg: Implement implicit ordering semantics",
2017-09-05)
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https://bugs.launchpad.net/bugs/1735049
Title:
Need MTTCG support for x86 guests
Status in QEMU:
In Progress
Bug description:
MTTCG support is notably absent for x86_64 guests. The last Wiki
update on MTTCG was back in 2015, and I am having some difficulty
determining the current status of the underlying requirements to
enable this feature on x86 hosts.
For instance, has support for strong-on-weak memory consistency been
added into QEMU GIT at this point?
Thanks!
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