@@ -245,6 +245,16 @@ static void cpu_ready_for_interrupts(void)
mtspr(SPRN_LPCR, lpcr | LPCR_AIL_3);
}
+ /*
+ * Fixup HFSCR:TM based on CPU features. The bit is set by our
+ * early asm init because at that point we haven't updated our
+ * CPU features from firmware and device-tree. Here we have,
+ * so let's do it
+ */
+ if (early_cpu_has_feature(CPU_FTR_HVMODE) &&
+ !early_cpu_has_feature(CPU_FTR_TM_COMP))
+ mtspr(SPRN_HFSCR, mfspr(SPRN_HFSCR) & ~HFSCR_TM);
+
/* Set IR and DR in PACA MSR */
get_paca()->kernel_msr = MSR_KERNEL;
}
Otherwise KVM guests might mess with it even when told not to causing bad thing interrupts in the host Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> --- arch/powerpc/kernel/setup_64.c | 10 ++++++++++ 1 file changed, 10 insertions(+)