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| author | Al Viro <viro@zeniv.linux.org.uk> | 2017-04-06 15:08:10 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-04-06 15:08:10 -0400 |
| commit | f2ed8bebee696a80f877aa436bfafed1f3336bdd (patch) | |
| tree | 515462256f08e2503e635ac971fd53e3ed4e43fa /arch/powerpc/sysdev/xics/icp-opal.c | |
| parent | 527b5baeada26f9660722b4a498d3855d90f276c (diff) | |
| parent | a7d2475af7aedcb9b5c6343989a8bfadbf84429b (diff) | |
Merge commit 'a7d2475af7aedcb9b5c6343989a8bfadbf84429b' into uaccess.powerpc
backmerge of sorting the arch/powerpc/Kconfig
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(); |