diff options
| author | Nicholas Piggin <npiggin@gmail.com> | 2021-11-23 12:51:40 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-11-24 13:08:56 +0300 |
| commit | 736df58fd5bcd02f811f7d474bbe02a35ffaa8f0 (patch) | |
| tree | ed286c2958ab1326ffd7a13bacc82a27890a3db3 /arch/powerpc/xmon | |
| parent | f53884b1bf28497e9596cac8b44ef1d41bd6dfc5 (diff) | |
| download | linux-736df58fd5bcd02f811f7d474bbe02a35ffaa8f0.tar.xz | |
powerpc/64s: guard optional TIDR SPR with CPU ftr test
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
Diffstat (limited to 'arch/powerpc/xmon')
| -rw-r--r-- | arch/powerpc/xmon/xmon.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c index 8b28ff9d98d1..83100c6524cc 100644 --- a/arch/powerpc/xmon/xmon.c +++ b/arch/powerpc/xmon/xmon.c @@ -2107,8 +2107,14 @@ static void dump_300_sprs(void) if (!cpu_has_feature(CPU_FTR_ARCH_300)) return; - printf("pidr = %.16lx tidr = %.16lx\n", - mfspr(SPRN_PID), mfspr(SPRN_TIDR)); + if (cpu_has_feature(CPU_FTR_P9_TIDR)) { + printf("pidr = %.16lx tidr = %.16lx\n", + mfspr(SPRN_PID), mfspr(SPRN_TIDR)); + } else { + printf("pidr = %.16lx\n", + mfspr(SPRN_PID)); + } + printf("psscr = %.16lx\n", hv ? mfspr(SPRN_PSSCR) : mfspr(SPRN_PSSCR_PR)); |