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| author | Marc Zyngier <marc.zyngier@arm.com> | 2016-10-17 14:47:34 +0200 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2016-10-17 16:54:30 +0200 |
| commit | 850540351bb1a4fa5f192e5ce55b89928cc57f42 (patch) | |
| tree | 52f1d8b1618bdf86eef79f38137651c288180a2e /arch/arc/kernel/irq.c | |
| parent | perf: xgene: Remove bogus IS_ERR() check (diff) | |
| download | linux-850540351bb1a4fa5f192e5ce55b89928cc57f42.tar.xz linux-850540351bb1a4fa5f192e5ce55b89928cc57f42.zip | |
arm64: kernel: Init MDCR_EL2 even in the absence of a PMU
Commit f436b2ac90a0 ("arm64: kernel: fix architected PMU registers
unconditional access") made sure we wouldn't access unimplemented
PMU registers, but also left MDCR_EL2 uninitialized in that case,
leading to trap bits being potentially left set.
Make sure we always write something in that register.
Fixes: f436b2ac90a0 ("arm64: kernel: fix architected PMU registers unconditional access")
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arc/kernel/irq.c')
0 files changed, 0 insertions, 0 deletions