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[PATCH 0/5] x86/xen: Get rid of Xen private lazy MMU mode tracking
- To: linux-kernel@xxxxxxxxxxxxxxx, x86@xxxxxxxxxx, linux-trace-kernel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, virtualization@xxxxxxxxxxxxxxx
- From: Juergen Gross <jgross@xxxxxxxx>
- Date: Tue, 26 May 2026 17:05:09 +0200
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- Cc: Juergen Gross <jgross@xxxxxxxx>, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, Steven Rostedt <rostedt@xxxxxxxxxxx>, Masami Hiramatsu <mhiramat@xxxxxxxxxx>, Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, David Hildenbrand <david@xxxxxxxxxx>, Lorenzo Stoakes <ljs@xxxxxxxxxx>, "Liam R. Howlett" <liam@xxxxxxxxxxxxx>, Vlastimil Babka <vbabka@xxxxxxxxxx>, Mike Rapoport <rppt@xxxxxxxxxx>, Suren Baghdasaryan <surenb@xxxxxxxxxx>, Michal Hocko <mhocko@xxxxxxxx>, Ajay Kaher <ajay.kaher@xxxxxxxxxxxx>, Alexey Makhalov <alexey.makhalov@xxxxxxxxxxxx>, Broadcom internal kernel review list <bcm-kernel-feedback-list@xxxxxxxxxxxx>
- Delivery-date: Tue, 26 May 2026 15:08:12 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
With generic lazy MMU mode tracking being available, there is no real
need for having Xen PV specific code to track lazy MMU mode, too.
This makes it possible to drop two paravirt hooks.
Note that this series is based on my series "x86/xen: Do some Xen-PV
related cleanups" [1].
[1]: https://lore.kernel.org/lkml/20260522152114.77319-1-jgross@xxxxxxxx/
Juergen Gross (5):
x86/xen: Drop lazy mode from trace entries
x86/xen: Change interface of xen_mc_issue()
mm: Refactor lazy_mmu_mode_pause() and lazy_mmu_mode_resume()
x86/xen: Get rid of last XEN_LAZY_MMU uses
x86/xen: Replace generic lazy tracking with cpu specific one
arch/x86/include/asm/paravirt.h | 9 ++--
arch/x86/include/asm/paravirt_types.h | 11 +----
arch/x86/include/asm/xen/hypervisor.h | 25 +---------
arch/x86/kernel/paravirt.c | 6 +--
arch/x86/xen/enlighten_pv.c | 30 +++++-------
arch/x86/xen/mmu_pv.c | 66 +++++++++------------------
arch/x86/xen/xen-ops.h | 12 +++--
include/linux/pgtable.h | 56 ++++++++++++++++++-----
include/trace/events/xen.h | 33 ++++++++------
9 files changed, 112 insertions(+), 136 deletions(-)
--
2.54.0
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