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[PATCH v3 0/2] Performance regression due to XSA-336
- To: xen-devel@xxxxxxxxxxxxxxxxxxxx
- From: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
- Date: Mon, 29 Mar 2021 17:15:00 -0400
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- Cc: jbeulich@xxxxxxxx, andrew.cooper3@xxxxxxxxxx, roger.pau@xxxxxxxxxx, wl@xxxxxxx, boris.ostrovsky@xxxxxxxxxx, stephen.s.brennan@xxxxxxxxxx, iwj@xxxxxxxxxxxxxx
- Delivery-date: Mon, 29 Mar 2021 21:15:37 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
The first patch addresses performance regression introduced by XSA-336 fixes.
This patch could be considered as a candidate for inclusion in 4.15.
The second patch is a minor cleanup and can safely wait until after 4.15.
Boris Ostrovsky (2):
x86/vpt: Do not take pt_migrate rwlock in some cases
x86/vpt: Simplify locking argument to write_{un}lock
xen/arch/x86/hvm/vpt.c | 48 +++++++++++++++++++++++++++++++++----------
xen/include/asm-x86/hvm/vpt.h | 18 ++++++++++------
2 files changed, 49 insertions(+), 17 deletions(-)
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1.8.3.1
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