From: Julien Grall <julien@xen.org>
To: Michal Orzel <michal.orzel@amd.com>,
Carlo Nonato <carlo.nonato@minervasys.tech>,
xen-devel@lists.xenproject.org
Cc: andrew.cooper3@citrix.com, george.dunlap@citrix.com,
jbeulich@suse.com, stefano.stabellini@amd.com, wl@xen.org,
marco.solieri@unimore.it, andrea.bastoni@minervasys.tech,
lucmiccio@gmail.com,
Marco Solieri <marco.solieri@minervasys.tech>
Subject: Re: [PATCH 06/12] xen/common: add cache coloring allocator for domains
Date: Mon, 17 Oct 2022 09:44:12 +0100 [thread overview]
Message-ID: <b61624ad-f631-b09a-0e3e-598b8982a0ee@xen.org> (raw)
In-Reply-To: <ff6a5e85-0867-2e22-e173-15805bfc7843@amd.com>
Hi,
On 17/10/2022 08:06, Michal Orzel wrote:
> On 26/08/2022 14:51, Carlo Nonato wrote:
> Apart from that, the memory coming from the buddy is of any color. Shouldn't it be that the memory
> allocated for domains comes from colored memory of the colors assigned to them and anything else
> should come from colors given to Xen? At the moment, the memory for e.g. allocating P2M tables comes
> from the buddy which means it can be of any color and might cause some cache interference.
Somewhat related. IIUC what you are saying, the P2M pool will still be
allocated from the buddy. I would expect we want to instead allocate the
P2M pool from the same color as the domain to prevent interference when
the TLBs are loaded. Or is the interference negligible?
Cheers,
--
Julien Grall
next prev parent reply other threads:[~2022-10-17 8:44 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-26 12:50 [PATCH 00/12] Arm cache coloring Carlo Nonato
2022-08-26 12:51 ` [PATCH 01/12] xen/arm: add cache coloring initialization Carlo Nonato
2022-09-26 6:20 ` Wei Chen
2022-09-26 7:42 ` Jan Beulich
2022-09-27 14:31 ` Carlo Nonato
2022-10-21 17:14 ` Julien Grall
2022-08-26 12:51 ` [PATCH 02/12] xen/arm: add cache coloring initialization for domains Carlo Nonato
2022-09-26 6:39 ` Wei Chen
2022-09-27 14:31 ` Carlo Nonato
2022-10-21 17:25 ` Julien Grall
2022-10-21 18:02 ` Julien Grall
2022-10-25 10:53 ` Carlo Nonato
2022-10-25 11:15 ` Julien Grall
2022-10-25 11:51 ` Andrea Bastoni
2022-11-07 13:44 ` Carlo Nonato
2022-11-07 18:24 ` Julien Grall
2023-01-26 12:05 ` Jan Beulich
2023-01-26 12:07 ` Jan Beulich
2022-10-21 18:04 ` Julien Grall
2022-08-26 12:51 ` [PATCH 03/12] xen/arm: dump cache colors in domain info debug-key Carlo Nonato
2022-08-26 12:51 ` [PATCH 04/12] tools/xl: add support for cache coloring configuration Carlo Nonato
2022-10-21 18:09 ` Julien Grall
2022-08-26 12:51 ` [PATCH 05/12] xen/arm: add support for cache coloring configuration via device-tree Carlo Nonato
2022-08-26 12:51 ` [PATCH 06/12] xen/common: add cache coloring allocator for domains Carlo Nonato
2022-09-15 13:13 ` Jan Beulich
2022-09-16 16:05 ` Carlo Nonato
2022-09-19 6:26 ` Jan Beulich
2022-09-19 22:42 ` Stefano Stabellini
2022-09-20 7:54 ` Jan Beulich
2022-10-13 9:47 ` Carlo Nonato
2022-10-13 10:44 ` Jan Beulich
2022-10-17 7:06 ` Michal Orzel
2022-10-17 8:44 ` Julien Grall [this message]
2022-10-17 9:16 ` Michal Orzel
2022-08-26 12:51 ` [PATCH 07/12] xen/common: add colored heap info debug-key Carlo Nonato
2022-08-26 14:13 ` Jan Beulich
2022-08-26 16:04 ` Carlo Nonato
2022-08-26 12:51 ` [PATCH 08/12] Revert "xen/arm: setup: Add Xen as boot module before printing all boot modules" Carlo Nonato
2022-09-10 14:01 ` Julien Grall
2022-09-12 13:54 ` Carlo Nonato
2022-10-21 16:52 ` Julien Grall
2022-08-26 12:51 ` [PATCH 09/12] Revert "xen/arm: mm: Initialize page-tables earlier" Carlo Nonato
2022-09-10 14:28 ` Julien Grall
2022-09-12 13:59 ` Carlo Nonato
2022-08-26 12:51 ` [PATCH 10/12] Revert "xen/arm: Remove unused BOOT_RELOC_VIRT_START" Carlo Nonato
2022-08-26 12:51 ` [PATCH 11/12] xen/arm: add Xen cache colors command line parameter Carlo Nonato
2022-08-26 12:51 ` [PATCH 12/12] xen/arm: add cache coloring support for Xen Carlo Nonato
2022-09-10 15:22 ` Julien Grall
2022-09-10 15:23 ` Julien Grall
2022-09-15 13:25 ` Jan Beulich
2022-09-16 16:07 ` Carlo Nonato
2022-09-19 8:38 ` Jan Beulich
2022-09-27 14:31 ` Carlo Nonato
2022-09-27 15:28 ` Jan Beulich
2022-09-10 15:12 ` [PATCH 00/12] Arm cache coloring Julien Grall
2022-09-12 13:24 ` Carlo Nonato
2022-09-15 13:29 ` Jan Beulich
2022-09-15 14:52 ` Marco Solieri
2022-09-15 18:15 ` Stefano Stabellini
2022-10-22 15:13 ` Julien Grall
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