From: Alex Thorlton <athorlton@sgi.com>
To: Juergen Gross <jgross@suse.com>
Cc: Jan Beulich <JBeulich@suse.com>,
David Vrabel <david.vrabel@citrix.com>,
x86@kernel.org, Thomas Gleixner <tglx@linutronix.de>,
xen-devel@lists.xenproject.org, Ingo Molnar <mingo@redhat.com>,
Alex Thorlton <athorlton@sgi.com>, Russ Anderson <rja@sgi.com>,
linux-kernel@vger.kernel.org, "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [RFC PATCH] xen/x86: Increase xen_e820_map to E820_X_MAX possible entries
Date: Tue, 15 Nov 2016 09:22:09 -0600 [thread overview]
Message-ID: <20161115152209.GA67776@stormcage.americas.sgi.com> (raw)
In-Reply-To: <4bac3691-f157-4acc-7b29-7c49be6d35d6@suse.com>
On Tue, Nov 15, 2016 at 10:55:49AM +0100, Juergen Gross wrote:
> I'd go with the new error code. What about E2BIG or ENOSPC?
>
> I think the hypervisor should fill in the number of entries required
> in this case.
>
> In case nobody objects I can post patches for this purpose (both Xen
> and Linux).
This sounds like a good solution to me. I think it's definitely more
appropriate than simply bumping up the size of xen_e820_map, especially
considering the fact that it's theoretically possible for the e820 map
generated by the hypercall to grow too large, even on a non-EFI machine,
where my change would have no effect.
Thanks for your input!
- Alex
next prev parent reply other threads:[~2016-11-15 15:22 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-15 0:11 Alex Thorlton
2016-11-15 6:33 ` Juergen Gross
2016-11-15 7:15 ` Jan Beulich
[not found] ` <582AC427020000780011EA7E@suse.com>
2016-11-15 7:36 ` Juergen Gross
2016-11-15 8:01 ` Jan Beulich
[not found] ` <582ACEDE020000780011EAC9@suse.com>
2016-11-15 8:42 ` Juergen Gross
2016-11-15 9:45 ` Jan Beulich
[not found] ` <582AE72D020000780011EBB2@suse.com>
2016-11-15 9:55 ` Juergen Gross
2016-11-15 10:44 ` Jan Beulich
[not found] ` <582AF51F020000780011ECB4@suse.com>
2016-11-15 11:07 ` Juergen Gross
2016-11-15 11:12 ` Jan Beulich
2016-11-15 15:22 ` Alex Thorlton [this message]
2016-11-16 6:06 ` Juergen Gross
2016-11-30 3:24 ` [RFC PATCH v2] " Alex Thorlton
2016-11-30 3:24 ` [PATCH 1/2] x86: Make E820_X_MAX unconditionally larger than E820MAX Alex Thorlton
2016-11-30 6:21 ` Ingo Molnar
2016-12-01 18:37 ` Alex Thorlton
2016-11-30 3:24 ` [PATCH 2/2] xen/x86: Increase xen_e820_map to E820_X_MAX possible entries Alex Thorlton
2016-11-30 5:18 ` Juergen Gross
2016-12-05 17:49 ` [RFC PATCH v3] " Alex Thorlton
2016-12-05 17:49 ` [PATCH 1/2] x86: Make E820_X_MAX unconditionally larger than E820MAX Alex Thorlton
2016-12-09 10:12 ` Juergen Gross
2016-12-05 17:49 ` [PATCH 2/2] xen/x86: Increase xen_e820_map to E820_X_MAX possible entries Alex Thorlton
2016-12-09 10:12 ` Juergen Gross
2016-12-08 5:50 ` [RFC PATCH v3] " Juergen Gross
2016-12-09 3:46 ` Ingo Molnar
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