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| author | Dave Airlie <airlied@redhat.com> | 2017-03-23 05:05:13 +0300 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2017-03-23 05:05:13 +0300 |
| commit | 65d1086c44791112188f6aebbdc3a27cab3736d3 (patch) | |
| tree | f769c133e61c54e34e91aa9ecf1d3504a6eb4fb4 /arch/powerpc/sysdev/xics/icp-opal.c | |
| parent | edd849e5448c4f6ddc04a5fa1ac5479176660c27 (diff) | |
| parent | 97da3854c526d3a6ee05c849c96e48d21527606c (diff) | |
| download | linux-65d1086c44791112188f6aebbdc3a27cab3736d3.tar.xz | |
BackMerge tag 'v4.11-rc3' into drm-next
Linux 4.11-rc3 as requested by Daniel
Diffstat (limited to 'arch/powerpc/sysdev/xics/icp-opal.c')
| -rw-r--r-- | arch/powerpc/sysdev/xics/icp-opal.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/xics/icp-opal.c b/arch/powerpc/sysdev/xics/icp-opal.c index f9670eabfcfa..b53f80f0b4d8 100644 --- a/arch/powerpc/sysdev/xics/icp-opal.c +++ b/arch/powerpc/sysdev/xics/icp-opal.c @@ -91,6 +91,16 @@ static unsigned int icp_opal_get_irq(void) static void icp_opal_set_cpu_priority(unsigned char cppr) { + /* + * Here be dragons. The caller has asked to allow only IPI's and not + * external interrupts. But OPAL XIVE doesn't support that. So instead + * of allowing no interrupts allow all. That's still not right, but + * currently the only caller who does this is xics_migrate_irqs_away() + * and it works in that case. + */ + if (cppr >= DEFAULT_PRIORITY) + cppr = LOWEST_PRIORITY; + xics_set_base_cppr(cppr); opal_int_set_cppr(cppr); iosync(); |