From: David Hildenbrand <david@redhat.com>
To: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Borislav Petkov <bp@alien8.de>, Andy Lutomirski <luto@kernel.org>,
Sean Christopherson <seanjc@google.com>,
Andrew Morton <akpm@linux-foundation.org>,
Joerg Roedel <jroedel@suse.de>, Ard Biesheuvel <ardb@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>,
Kuppuswamy Sathyanarayanan
<sathyanarayanan.kuppuswamy@linux.intel.com>,
David Rientjes <rientjes@google.com>,
Vlastimil Babka <vbabka@suse.cz>,
Tom Lendacky <thomas.lendacky@amd.com>,
Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <peterz@infradead.org>,
Paolo Bonzini <pbonzini@redhat.com>,
Ingo Molnar <mingo@redhat.com>,
Varad Gautam <varad.gautam@suse.com>,
Dario Faggioli <dfaggioli@suse.com>,
Dave Hansen <dave.hansen@intel.com>,
Mike Rapoport <rppt@kernel.org>,
marcelo.cerri@canonical.com, tim.gardner@canonical.com,
khalid.elmously@canonical.com, philip.cox@canonical.com,
x86@kernel.org, linux-mm@kvack.org, linux-coco@lists.linux.dev,
linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCHv6 10/15] x86/mm: Report unaccepted memory in /proc/meminfo
Date: Thu, 2 Jun 2022 10:39:59 +0200 [thread overview]
Message-ID: <a678504c-3468-12e5-b51d-5670bdf165e5@redhat.com> (raw)
In-Reply-To: <20220517153444.11195-11-kirill.shutemov@linux.intel.com>
On 17.05.22 17:34, Kirill A. Shutemov wrote:
> Track amount of unaccepted memory and report it in /proc/meminfo.
I feel like instead of doing this arch specific tracking here, we should
simply report the total number of unaccepted (base) pages in the buddy.
When the system boots up, the number will rise as unaccepted memory gets
exposed to the buddy. But especially once user space is up and running,
that number should only go down.
Once it hits zero, there is no unaccepted memory left in the buddy and
there won't be any performance surprises anymote -- and AFAIKT, that's
what we really care about.
--
Thanks,
David / dhildenb
next prev parent reply other threads:[~2022-06-02 8:40 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-17 15:34 [PATCHv6 00/15] mm, x86/cc: Implement support for unaccepted memory Kirill A. Shutemov
2022-05-17 15:34 ` [PATCHv6 01/15] x86/boot: Centralize __pa()/__va() definitions Kirill A. Shutemov
2022-05-17 15:34 ` [PATCHv6 02/15] mm: Add support for unaccepted memory Kirill A. Shutemov
2022-05-17 17:45 ` Andrew Morton
2022-05-17 18:04 ` Kirill A. Shutemov
2022-05-19 10:43 ` Gupta, Pankaj
2022-05-19 11:55 ` Kirill A. Shutemov
2022-05-19 14:33 ` Gupta, Pankaj
2022-06-01 8:47 ` David Hildenbrand
2022-05-17 15:34 ` [PATCHv6 03/15] efi/x86: Get full memory map in allocate_e820() Kirill A. Shutemov
2022-06-01 9:00 ` David Hildenbrand
2022-06-01 14:35 ` Kirill A. Shutemov
2022-06-01 14:39 ` David Hildenbrand
2022-06-01 14:46 ` Kirill A. Shutemov
2022-05-17 15:34 ` [PATCHv6 04/15] x86/boot: Add infrastructure required for unaccepted memory support Kirill A. Shutemov
2022-05-17 15:34 ` [PATCHv6 05/15] efi/x86: Implement support for unaccepted memory Kirill A. Shutemov
2022-05-17 15:34 ` [PATCHv6 06/15] x86/boot/compressed: Handle " Kirill A. Shutemov
2022-05-17 15:34 ` [PATCHv6 07/15] x86/mm: Reserve unaccepted memory bitmap Kirill A. Shutemov
2022-05-17 15:34 ` [PATCHv6 08/15] x86/mm: Provide helpers for unaccepted memory Kirill A. Shutemov
2022-05-17 15:34 ` [PATCHv6 09/15] x86/mm: Avoid load_unaligned_zeropad() stepping into " Kirill A. Shutemov
2022-05-17 15:34 ` [PATCHv6 10/15] x86/mm: Report unaccepted memory in /proc/meminfo Kirill A. Shutemov
2022-06-02 8:39 ` David Hildenbrand [this message]
2022-05-17 15:34 ` [PATCHv6 11/15] x86: Disable kexec if system has unaccepted memory Kirill A. Shutemov
2022-05-17 15:34 ` [PATCHv6 12/15] x86/tdx: Make _tdx_hypercall() and __tdx_module_call() available in boot stub Kirill A. Shutemov
2022-05-17 15:34 ` [PATCHv6 13/15] x86/tdx: Refactor try_accept_one() Kirill A. Shutemov
2022-05-17 15:34 ` [PATCHv6 14/15] x86/tdx: Add unaccepted memory support Kirill A. Shutemov
2022-05-17 15:34 ` [PATCHv6 15/15] mm/vmstat: Add counter for memory accepting Kirill A. Shutemov
2022-06-01 9:05 ` David Hildenbrand
2022-06-01 14:41 ` Kirill A. Shutemov
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