linux-kernel - Re: xfs: Xen/HPT related regression in v6.6

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Message-ID: <20241159163-ZyniUyCdoAYdWpG2-arkamar@atlas.cz>
Date: Tue, 5 Nov 2024 10:16:03 +0100
From: Petr Vaněk <arkamar@...as.cz>
To: Andrew Cooper <andrew.cooper3@...rix.com>
Cc: david@...hat.com, gregkh@...uxfoundation.org,
	linux-kernel@...r.kernel.org, linux-xfs@...r.kernel.org,
	willy@...radead.org
Subject: Re: xfs: Xen/HPT related regression in v6.6

On Tue, Nov 05, 2024 at 08:55:17AM +0000, Andrew Cooper wrote:
> >> At least years ago, this feature was not available in XEN PV guests [1]. 
> > Yes, as I understand it, the hugepages are not available in my Xen
> > guest.
> 
> Xen PV guests are strictly 4k-only.
> 
> Xen HVM guests (using normal VT-x/SVM hardware support) have all page
> sizes available.
> 
> But lucky to find this thread.  We've had several reports and no luck
> isolating what changed.

I am happy to hear that :) It was partially my intention to inform
others because I spent some time isolating it.

Cheers,
Petr