linux-kernel - Re: [PATCH v13 00/12] KVM: guest_memfd: Add NUMA mempolicy support

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Message-ID: <115440a3-a035-4949-a767-19c0be4b6010@amd.com>
Date: Tue, 21 Oct 2025 11:29:41 +0530
From: "Garg, Shivank" <shivankg@....com>
To: Sean Christopherson <seanjc@...gle.com>, Miguel Ojeda <ojeda@...nel.org>,
 Marc Zyngier <maz@...nel.org>, Oliver Upton <oliver.upton@...ux.dev>,
 Paolo Bonzini <pbonzini@...hat.com>
Cc: linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev,
 kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
 Ackerley Tng <ackerleytng@...gle.com>, David Hildenbrand <david@...hat.com>,
 Fuad Tabba <tabba@...gle.com>, Ashish Kalra <ashish.kalra@....com>,
 Vlastimil Babka <vbabka@...e.cz>
Subject: Re: [PATCH v13 00/12] KVM: guest_memfd: Add NUMA mempolicy support



On 10/20/2025 10:03 PM, Sean Christopherson wrote:
> On Thu, 16 Oct 2025 10:28:41 -0700, Sean Christopherson wrote:
>> Miguel, you got pulled in due to a one-line change to add a new iterator
>> macros in .clang-format.
>>
>> Shivank's series to add support for NUMA-aware memory placement in
>> guest_memfd.  Based on kvm-x86/next.
>>
>> Note, Ackerley pointed out that we should probably have testing for the
>> cpuset_do_page_mem_spread() behavior.  I 100% agree, but I'm also a-ok
>> merging without those tests.
>>
>> [...]
> 
> Applied to kvm-x86 gmem, sans the .clang-format change.  Thanks!
> 
> [01/12] KVM: guest_memfd: Rename "struct kvm_gmem" to "struct gmem_file"
>         https://github.com/kvm-x86/linux/commit/497b1dfbcacf
> [02/12] KVM: guest_memfd: Add macro to iterate over gmem_files for a mapping/inode
>         https://github.com/kvm-x86/linux/commit/392dd9d9488a
> [03/12] KVM: guest_memfd: Use guest mem inodes instead of anonymous inodes
>         https://github.com/kvm-x86/linux/commit/a63ca4236e67
> [04/12] KVM: guest_memfd: Add slab-allocated inode cache
>         https://github.com/kvm-x86/linux/commit/f609e89ae893
> [05/12] KVM: guest_memfd: Enforce NUMA mempolicy using shared policy
>         https://github.com/kvm-x86/linux/commit/ed1ffa810bd6
> [06/12] KVM: selftests: Define wrappers for common syscalls to assert success
>         https://github.com/kvm-x86/linux/commit/3223560c93eb
> [07/12] KVM: selftests: Report stacktraces SIGBUS, SIGSEGV, SIGILL, and SIGFPE by default
>         https://github.com/kvm-x86/linux/commit/29dc539d74ab
> [08/12] KVM: selftests: Add additional equivalents to libnuma APIs in KVM's numaif.h
>         https://github.com/kvm-x86/linux/commit/2189d78269c5
> [09/12] KVM: selftests: Use proper uAPI headers to pick up mempolicy.h definitions
>         https://github.com/kvm-x86/linux/commit/fe7baebb99de
> [10/12] KVM: selftests: Add helpers to probe for NUMA support, and multi-node systems
>         https://github.com/kvm-x86/linux/commit/e698e89b3ed1
> [11/12] KVM: selftests: Add guest_memfd tests for mmap and NUMA policy support
>         https://github.com/kvm-x86/linux/commit/38ccc50ac037
> [12/12] KVM: guest_memfd: Add gmem_inode.flags field instead of using i_private
>         https://github.com/kvm-x86/linux/commit/e66438bb81c4
> 
> --
> https://github.com/kvm-x86/linux/tree/next

Hi Sean,

Thank you for handling all the changes in v12-v13. I appreciate you taking this on,
especially the refactoring, improving selftests and code clarity.

Thanks to everyone who provided support, reviews, and suggestions throughout the series.

Best regards,
Shivank