[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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