From: Vaibhav Jain <vaib...@linux.vnet.ibm.com> Adds a 5ms wait to phb3_msi_set_xive after the interrupt is masked so that the kernel delays cleanup until an irq if its in-flight is handled. The value 5ms is the worst case time needed by an irq to be presented to the host after its generated.
Signed-off-by: Vaibhav Jain <vaib...@linux.vnet.ibm.com> --- This patch requires the following patches: https://patchwork.ozlabs.org/patch/581764/ https://patchwork.ozlabs.org/patch/581765/ hw/phb3.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/hw/phb3.c b/hw/phb3.c index fbdcb9e..e5d49b2 100644 --- a/hw/phb3.c +++ b/hw/phb3.c @@ -1751,6 +1751,8 @@ static int64_t phb3_msi_set_xive(void *data, PHB_IVC_UPDATE_ENABLE_Q | PHB_IVC_UPDATE_ENABLE_GEN; out_be64(p->regs + PHB_IVC_UPDATE, ivc); + /* wait for 5ms before signalling the interrupt is masked */ + time_wait_ms(5); } return OPAL_SUCCESS; -- 2.7.1 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
