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[PATCH v3 0/2] x86/pv: Alternative XSA-286 fix
- To: Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Tue, 27 Oct 2020 14:10:35 +0000
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>
- Delivery-date: Tue, 27 Oct 2020 14:12:06 +0000
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- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Alternative XSA-286 fix, with far less of a performance hit.
v3:
* Split into two patches, to try and make the TLB flushing in do_mmu_update()
a tractable problem to solve.
Andrew Cooper (2):
x86/pv: Drop FLUSH_TLB_GLOBAL in do_mmu_update() for XPTI
x86/pv: Flush TLB in response to paging structure changes
xen/arch/x86/mm.c | 69 +++++++++++++++++++++++++++++++++++++++++++++++--------
1 file changed, 59 insertions(+), 10 deletions(-)
--
2.11.0
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