From: Laurent Vivier <lvivier@redhat.com>
To: David Gibson <david@gibson.dropbear.id.au>,
paulus@samba.org, sjitindarsingh@gmail.com
Cc: agraf@suse.de, mdroth@linux.vnet.ibm.com, thuth@redhat.com,
qemu-ppc@nongnu.org, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCHv3 2/5] pseries: Stubs for HPT resizing
Date: Tue, 13 Dec 2016 15:29:05 +0100 [thread overview]
Message-ID: <4431c63f-7ecc-d38b-df05-a428c0b98a63@redhat.com> (raw)
In-Reply-To: <20161212040603.27295-3-david@gibson.dropbear.id.au>
On 12/12/2016 05:06, David Gibson wrote:
> This introduces stub implementations of the H_RESIZE_HPT_PREPARE and
> H_RESIZE_HPT_COMMIT hypercalls which we hope to add in a PAPR
> extension to allow run time resizing of a guest's hash page table. It
> also adds a new machine property for controlling whether this new
> facility is available, and logic to check that against availability
> with KVM (only supported with KVM PR for now).
>
> Finally, it adds a new string to the hypertas property in the device
> tree, advertising to the guest the availability of the HPT resizing
> hypercalls. This is a tentative suggested value, and would need to be
> standardized by PAPR before being merged.
Could you explain somewhere what is the aim of the "flags" parameter?
It could help to understand why we have it as it is not used.
Thanks,
Laurent
next prev parent reply other threads:[~2016-12-13 14:29 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-12 4:05 [Qemu-devel] [PATCHv3 0/5] Hash Page Table resizing for TCG pseries guests David Gibson
2016-12-12 4:05 ` [Qemu-devel] [PATCHv3 1/5] pseries: Add pseries-2.9 machine type David Gibson
2016-12-12 4:06 ` [Qemu-devel] [PATCHv3 2/5] pseries: Stubs for HPT resizing David Gibson
2016-12-13 14:29 ` Laurent Vivier [this message]
2016-12-14 6:12 ` David Gibson
2016-12-14 5:22 ` Suraj Jitindar Singh
2016-12-15 1:07 ` David Gibson
2016-12-12 4:06 ` [Qemu-devel] [PATCHv3 3/5] pseries: Implement " David Gibson
2016-12-14 5:30 ` Suraj Jitindar Singh
2016-12-14 6:20 ` David Gibson
2016-12-14 23:20 ` Suraj Jitindar Singh
2016-12-15 0:59 ` David Gibson
2016-12-14 5:35 ` Suraj Jitindar Singh
2016-12-15 1:03 ` David Gibson
2016-12-12 4:06 ` [Qemu-devel] [PATCHv3 4/5] pseries: Enable HPT resizing for 2.9 David Gibson
2016-12-14 5:32 ` Suraj Jitindar Singh
2016-12-14 6:20 ` David Gibson
2016-12-14 23:08 ` Suraj Jitindar Singh
2016-12-12 4:06 ` [Qemu-devel] [PATCHv3 5/5] pseries: Use smaller default hash page tables when guest can resize David Gibson
2016-12-14 5:56 ` Suraj Jitindar Singh
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