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Commit 51cbb3b3 authored by Michael Ellerman's avatar Michael Ellerman Committed by Greg Kroah-Hartman
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powerpc/pseries: Support firmware disable of RFI flush 



commit 582605a429e20ae68fd0b041b2e840af296edd08 upstream.

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

Fixes: 8989d56878a7 ("powerpc/pseries: Query hypervisor for RFI flush settings")
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 70e51fd5

arch/powerpc/platforms/pseries/setup.c

+2 −1
Original line number Diff line number Diff line
@@ -473,7 +473,8 @@ 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 */