powerpc/pseries: Enable support for ibm,drc-info property

commit 0a87ccd3699983645f54cafd2258514a716b20b8 upstream.

Advertise client support for the PAPR architected ibm,drc-info device
tree property during CAS handshake.

Fixes: c7a3275e0f9e ("powerpc/pseries: Revert support for ibm,drc-info devtree property")
Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1573449697-5448-11-git-send-email-tyreld@linux.ibm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 100f1b5..eba9d4e 100644 (file)
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -1053,7 +1053,7 @@ static const struct ibm_arch_vec ibm_architecture_vec_template __initconst = {
                .reserved2 = 0,
                .reserved3 = 0,
                .subprocessors = 1,
-               .byte22 = OV5_FEAT(OV5_DRMEM_V2),
+               .byte22 = OV5_FEAT(OV5_DRMEM_V2) | OV5_FEAT(OV5_DRC_INFO),
                .intarch = 0,
                .mmu = 0,
                .hash_ext = 0,