powerpc/pseries: Support firmware disable of RFI flush



Some versions of firmware will have a setting that can be configured
to disable the RFI flush, add support for it.

Fixes: 8989d568 ("powerpc/pseries: Query hypervisor for RFI flush settings")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

parent 2f7d03e0

arch/powerpc/platforms/pseries/setup.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -482,7 +482,8 @@ static void pseries_setup_rfi_flush(void)
		if (types == L1D_FLUSH_NONE)
		types = L1D_FLUSH_FALLBACK;

		if (!(result.behaviour & H_CPU_BEHAV_L1D_FLUSH_PR))
		if ((!(result.behaviour & H_CPU_BEHAV_L1D_FLUSH_PR)) \|\|
		(!(result.behaviour & H_CPU_BEHAV_FAVOUR_SECURITY)))
		enable = false;
		} else {
		/* Default to fallback if case hcall is not available */