diff options
| author | Carsten Otte <cotte@de.ibm.com> | 2011-04-20 10:15:36 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2011-04-20 10:15:44 +0200 |
| commit | 9ff4cfb3fcfd48b49fdd9be7381b3be340853aa4 (patch) | |
| tree | f009abfed6f9077d487764c8c7ca7e8dc3eb0346 /arch/s390/kvm/priv.c | |
| parent | c7a29e56f0a3526b71e9694b403b8e2cbe9c31e5 (diff) | |
[S390] kvm-390: Let kernel exit SIE instruction on work
From: Christian Borntraeger <borntraeger@de.ibm.com>
This patch fixes the sie exit on interrupts. The low level
interrupt handler returns to the PSW address in pt_regs and not
to the PSW address in the lowcore.
Without this fix a cpu bound guest might never leave guest state
since the host interrupt handler would blindly return to the
SIE instruction, even on need_resched and friends.
Cc: stable@kernel.org
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kvm/priv.c')
0 files changed, 0 insertions, 0 deletions