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Re: [PATCH] x86/paravirt: merge activate_mm and dup_mmap callbacks
- To: Juergen Gross <jgross@xxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, x86@xxxxxxxxxx, virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx
- From: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
- Date: Thu, 12 Jan 2023 14:44:07 -0500
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- Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, "Srivatsa S. Bhat (VMware)" <srivatsa@xxxxxxxxxxxxx>, Alexey Makhalov <amakhalov@xxxxxxxxxx>, VMware PV-Drivers Reviewers <pv-drivers@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Thu, 12 Jan 2023 19:45:00 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 1/12/23 10:21 AM, Juergen Gross wrote:
The two paravirt callbacks .mmu.activate_mm and .mmu.dup_mmap are
sharing the same implementations in all cases: for Xen PV guests they
are pinning the PGD of the new mm_struct, and for all other cases
they are a NOP.
So merge them to a common callback .mmu.enter_mmap (in contrast to the
corresponding already existing .mmu.exit_mmap).
As the first parameter of the old callbacks isn't used, drop it from
the replacement one.
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
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