From: Gregory Price <gourry@gourry.net>
To: David Hildenbrand <david@redhat.com>
Cc: Yang Shi <shy828301@gmail.com>,
lsf-pc@lists.linux-foundation.org, linux-mm@kvack.org,
linux-cxl@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: CXL Boot to Bash - Section 3: Memory (block) Hotplug
Date: Thu, 20 Feb 2025 14:35:55 -0500 [thread overview]
Message-ID: <Z7eEGwFltjWaoX-r@gourry-fedora-PF4VCD3F> (raw)
In-Reply-To: <4ae838ee-b079-408e-8799-e9530ca50417@redhat.com>
On Thu, Feb 20, 2025 at 08:26:21PM +0100, David Hildenbrand wrote:
> On 20.02.25 19:43, Gregory Price wrote:
>
> There were ideas in how to optimize that (e.g., requiring a new sysfs
> interface to expose variable-sized blocks), if anybody is interested, please
> reach out.
>
Multiple block sizes would allow managing the misaligned issues I
discussed earlier as well (where a memory region is not aligned to the
arch-preferred block size). At least in that scenario, the misaligned
regions could be brought online as minimal block size (256MB) while the
aligned portions could be brought online in larger (2GB) chunks.
Do you think this would this require a lot of churn to enable? Last I dug
through hotplug, it seemed to assume block sizes would be uniform. I was
hesitant to start ripping through it.
~Gregory
next prev parent reply other threads:[~2025-02-20 19:36 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-12-26 20:19 [LSF/MM] Linux management of volatile CXL memory devices - boot to bash Gregory Price
2025-02-05 2:17 ` [LSF/MM] CXL Boot to Bash - Section 1: BIOS, EFI, and Early Boot Gregory Price
2025-02-18 10:12 ` Yuquan Wang
2025-02-18 16:11 ` Gregory Price
2025-02-20 16:30 ` Jonathan Cameron
2025-02-20 16:52 ` Gregory Price
2025-03-04 0:32 ` Gregory Price
2025-03-13 16:12 ` Jonathan Cameron
2025-03-13 17:20 ` Gregory Price
2025-03-10 10:45 ` Yuquan Wang
2025-03-10 14:19 ` Gregory Price
2025-02-05 16:06 ` CXL Boot to Bash - Section 2: The Drivers Gregory Price
2025-02-06 0:47 ` Dan Williams
2025-02-06 15:59 ` Gregory Price
2025-03-04 1:32 ` Gregory Price
2025-03-06 23:56 ` CXL Boot to Bash - Section 2a (Drivers): CXL Decoder Programming Gregory Price
2025-03-07 0:57 ` Zhijian Li (Fujitsu)
2025-03-07 15:07 ` Gregory Price
2025-03-11 2:48 ` Zhijian Li (Fujitsu)
2025-04-02 6:45 ` Zhijian Li (Fujitsu)
2025-04-02 14:18 ` Gregory Price
2025-04-08 3:10 ` Zhijian Li (Fujitsu)
2025-04-08 4:14 ` Gregory Price
2025-04-08 5:37 ` Zhijian Li (Fujitsu)
2025-02-17 20:05 ` CXL Boot to Bash - Section 3: Memory (block) Hotplug Gregory Price
2025-02-18 16:24 ` David Hildenbrand
2025-02-18 17:03 ` Gregory Price
2025-02-18 17:49 ` Yang Shi
2025-02-18 18:04 ` Gregory Price
2025-02-18 19:25 ` David Hildenbrand
2025-02-18 20:25 ` Gregory Price
2025-02-18 20:57 ` David Hildenbrand
2025-02-19 1:10 ` Gregory Price
2025-02-19 8:53 ` David Hildenbrand
2025-02-19 16:14 ` Gregory Price
2025-02-20 17:50 ` Yang Shi
2025-02-20 18:43 ` Gregory Price
2025-02-20 19:26 ` David Hildenbrand
2025-02-20 19:35 ` Gregory Price [this message]
2025-02-20 19:44 ` David Hildenbrand
2025-02-20 20:06 ` Gregory Price
2025-03-11 14:53 ` Zi Yan
2025-03-11 15:58 ` Gregory Price
2025-03-11 16:08 ` Zi Yan
2025-03-11 16:15 ` Gregory Price
2025-03-11 16:35 ` Oscar Salvador
2025-03-05 22:20 ` [LSF/MM] CXL Boot to Bash - Section 0: ACPI and Linux Resources Gregory Price
2025-03-05 22:44 ` Dave Jiang
2025-03-05 23:34 ` Gregory Price
2025-03-05 23:41 ` Dave Jiang
2025-03-06 0:09 ` Gregory Price
2025-03-06 1:37 ` Yuquan Wang
2025-03-06 17:08 ` Gregory Price
2025-03-07 2:20 ` Yuquan Wang
2025-03-07 15:12 ` Gregory Price
2025-03-13 17:00 ` Jonathan Cameron
2025-03-08 3:23 ` [LSF/MM] CXL Boot to Bash - Section 0a: CFMWS and NUMA Flexiblity Gregory Price
2025-03-13 17:20 ` Jonathan Cameron
2025-03-13 18:17 ` Gregory Price
2025-03-14 11:09 ` Jonathan Cameron
2025-03-14 13:46 ` Gregory Price
2025-03-13 16:55 ` [LSF/MM] CXL Boot to Bash - Section 0: ACPI and Linux Resources Jonathan Cameron
2025-03-13 17:30 ` Gregory Price
2025-03-14 11:14 ` Jonathan Cameron
2025-03-27 9:34 ` Yuquan Wang
2025-03-27 12:36 ` Gregory Price
2025-03-27 13:21 ` Dan Williams
2025-03-27 16:36 ` Gregory Price
2025-03-31 23:49 ` [Lsf-pc] " Dan Williams
2025-03-12 0:09 ` [LSF/MM] CXL Boot to Bash - Section 4: Interleave Gregory Price
2025-03-13 8:31 ` Yuquan Wang
2025-03-13 16:48 ` Gregory Price
2025-03-26 9:28 ` Yuquan Wang
2025-03-26 12:53 ` Gregory Price
2025-03-27 2:20 ` Yuquan Wang
2025-03-27 2:51 ` [Lsf-pc] " Dan Williams
2025-03-27 6:29 ` Yuquan Wang
2025-03-14 3:21 ` [LSF/MM] CXL Boot to Bash - Section 6: Page allocation Gregory Price
2025-03-18 17:09 ` [LSFMM] Updated: Linux Management of Volatile CXL Memory Devices Gregory Price
2025-04-02 4:49 ` Gregory Price
[not found] ` <CGME20250407161445uscas1p19322b476cafd59f9d7d6e1877f3148b8@uscas1p1.samsung.com>
2025-04-07 16:14 ` Adam Manzanares
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