powerpc/64s: guard optional TIDR SPR with CPU ftr test

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The TIDR SPR only exists on POWER9. Avoid accessing it when the
feature bit for it is not set.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Fabiano Rosas <farosas@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211123095231.1036501-3-npiggin@gmail.com

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Nicholas Piggin 2021-11-23 19:51:40 +10:00 • committed by Michael Ellerman

parent f53884b1bf

commit 736df58fd5

2 changed files with 16 additions and 6 deletions

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12

arch/powerpc/kvm/book3s_hv.c

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10

arch/powerpc/xmon/xmon.c

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