powerpc: Wire up the HV facility unavailable exception
Similar to the facility unavailble exception, except the facilities are
controlled by HFSCR.
Adapt the facility_unavailable_exception() so it can be called for
either the regular or Hypervisor facility unavailable exceptions.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
CC: <stable@vger.kernel.org> [v3.10]
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 11f4488..4a87fcb 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -1299,10 +1299,18 @@
"EBB",
"TAR",
};
- char *facility;
+ char *facility, *prefix;
u64 value;
- value = mfspr(SPRN_FSCR) >> 56;
+ if (regs->trap == 0xf60) {
+ value = mfspr(SPRN_FSCR);
+ prefix = "";
+ } else {
+ value = mfspr(SPRN_HFSCR);
+ prefix = "Hypervisor ";
+ }
+
+ value = value >> 56;
/* We restore the interrupt state now */
if (!arch_irq_disabled_regs(regs))
@@ -1313,8 +1321,8 @@
else
facility = "unknown";
- pr_err("Facility '%s' unavailable, exception at 0x%lx, MSR=%lx\n",
- facility, regs->nip, regs->msr);
+ pr_err("%sFacility '%s' unavailable, exception at 0x%lx, MSR=%lx\n",
+ prefix, facility, regs->nip, regs->msr);
if (user_mode(regs)) {
_exception(SIGILL, regs, ILL_ILLOPC, regs->nip);