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Re: [PATCH 13/14] ptp: vmclock: convert mmap hook to mmap_prepare
- To: "Lorenzo Stoakes (ARM)" <ljs@xxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>, Madhavan Srinivasan <maddy@xxxxxxxxxxxxx>, Nicholas Piggin <npiggin@xxxxxxxxx>, Michael Ellerman <mpe@xxxxxxxxxxxxxx>, "Christophe Leroy (CS GROUP)" <chleroy@xxxxxxxxxx>, "Ritesh Harjani (IBM)" <ritesh.list@xxxxxxxxx>, Shrikanth Hegde <sshegde@xxxxxxxxxxxxx>, Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>, Wei Liu <wei.liu@xxxxxxxxxx>, Dexuan Cui <decui@xxxxxxxxxxxxx>, "Michael S. Tsirkin" <mst@xxxxxxxxxx>, Jason Wang <jasowangio@xxxxxxxxx>, Eugenio Pérez <eperezma@xxxxxxxxxx>, Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx>, Jarkko Sakkinen <jarkko@xxxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, x86@xxxxxxxxxx, "H. Peter Anvin" <hpa@xxxxxxxxx>, Jan Kara <jack@xxxxxxxx>, Paul Moore <paul@xxxxxxxxxxxxxx>, Stephen Smalley <stephen.smalley.work@xxxxxxxxx>, Ondrej Mosnáček <omosnacek@xxxxxxxxx>, Joel Stanley <joel@xxxxxxxxx>, Andrew Jeffery <andrew@xxxxxxxxxxxxxxxxxxxx>, Ryan Chen <ryan_chen@xxxxxxxxxxxxxx>, Billy Tsai <billy_tsai@xxxxxxxxxxxxxx>, Bjorn Andersson <andersson@xxxxxxxxxx>, Konrad Dybcio <konradybcio@xxxxxxxxxx>, Abel Vesa <abelvesa@xxxxxxxxxx>, Jens Wiklander <jenswi@xxxxxxxxxx>, Sumit Garg <sumit.garg@xxxxxxxxxx>, Scott Branden <scott.branden@xxxxxxxxxxxx>, Broadcom internal kernel review list <bcm-kernel-feedback-list@xxxxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>, Richard Cochran <richardcochran@xxxxxxxxx>, Andrew Lunn <andrew+netdev@xxxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, Eric Dumazet <edumazet@xxxxxxxxxx>, Jakub Kicinski <kuba@xxxxxxxxxx>, Paolo Abeni <pabeni@xxxxxxxxxx>
- From: David Woodhouse <dwmw2@xxxxxxxxxxxxx>
- Date: Thu, 05 Nov 2026 16:34:23 -0800
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- Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, kvm@xxxxxxxxxxxxxxx, linux-hyperv@xxxxxxxxxxxxxxx, virtualization@xxxxxxxxxxxxxxx, linux-sgx@xxxxxxxxxxxxxxx, selinux@xxxxxxxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-aspeed@xxxxxxxxxxxxxxxx, linux-arm-msm@xxxxxxxxxxxxxxx, op-tee@xxxxxxxxxxxxxxxxxxxxxxxxx, netdev@xxxxxxxxxxxxxxx
- Delivery-date: Fri, 06 Nov 2026 00:35:27 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On Thu, 2026-11-05 at 21:05 +0000, Lorenzo Stoakes (ARM) wrote:
> Move from the deprecated mmap hook to the new mmap_prepare hook, using the
> I/O PFN remap mmap action to map the clock page and retaining the -EAGAIN
> error on failure via the action error override.
>
> Signed-off-by: Lorenzo Stoakes (ARM) <ljs@xxxxxxxxxx>
Acked-by: David Woodhouse <dwmw@xxxxxxxxxxxx>
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