[SRU][Bionic][Cosmic][PATCH 0/1] KVM: PPC: Book3S HV: Provide mode where all vCPUs on a core must be the same VM
Joseph Salisbury
joseph.salisbury at canonical.com
Thu Oct 11 20:19:18 UTC 2018
BugLink: https://bugs.launchpad.net/bugs/1792957
== SRU Justification ==
This patch has been requested by IBM. It provides a mode where all vCPUs
on a core must be the same VM. This is intended for use in
security-conscious settings where users are concerned about possible
side-channel attacks between threads which could perhaps enable one VM
to attack another VM on the same core, or the host.
== Fix ==
linux-next commit:
aa2278644ae5 ("KVM: PPC: Book3S HV: Provide mode where all vCPUs on a core must be the same VM")
== Regression Potential ==
Low. Changes limited to powerpc.
== Test Case ==
A test kernel was built with this patch and tested by the original bug reporter.
The bug reporter states the test kernel resolved the bug.
Paul Mackerras (1):
KVM: PPC: Book3S HV: Provide mode where all vCPUs on a core must be
the same VM
arch/powerpc/kvm/book3s_hv.c | 8 ++++++++
1 file changed, 8 insertions(+)
--
2.7.4
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