KVM: s390: flush CPU on load control

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commit 2dca485f87 upstream.

some control register changes will flush some aspects of the CPU, e.g.
POP explicitely mentions that for CR9-CR11 "TLBs may be cleared".
Instead of trying to be clever and only flush on specific CRs, let
play safe and flush on all lctl(g) as future machines might define
new bits in CRs. Load control intercept should not happen that often.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

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Christian Borntraeger 2014-10-31 09:24:20 +01:00 • committed by Luis Henriques

parent 69ba3b2531

commit fca4638cf8

1 changed files with 2 additions and 2 deletions

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arch/s390/kvm/priv.c

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