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| author | Simon Guo <wei.guo.simon@gmail.com> | 2018-05-23 15:01:55 +0800 |
|---|---|---|
| committer | Paul Mackerras <paulus@ozlabs.org> | 2018-06-01 10:29:42 +1000 |
| commit | 36383a0862b68fc14b63dd6c93c64f1f82b6e8a9 (patch) | |
| tree | 2ebf34d92549e0ef2f75678124c3b77429b73824 /drivers/fpga/fpga-mgr.c | |
| parent | 401a89e9375c011de4e3271d50f27648b734a7cb (diff) | |
KVM: PPC: Book3S PR: Avoid changing TS bits when exiting guest
PR KVM host usually runs with TM enabled in its host MSR value, and
with non-transactional TS value.
When a guest with TM active traps into PR KVM host, the rfid at the
tail of kvmppc_interrupt_pr() will try to switch TS bits from
S0 (Suspended & TM disabled) to N1 (Non-transactional & TM enabled).
That will leads to TM Bad Thing interrupt.
This patch manually sets target TS bits unchanged to avoid this
exception.
Signed-off-by: Simon Guo <wei.guo.simon@gmail.com>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Diffstat (limited to 'drivers/fpga/fpga-mgr.c')
0 files changed, 0 insertions, 0 deletions