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| author | Marc Zyngier <marc.zyngier@arm.com> | 2016-10-17 13:47:34 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-10-28 03:01:35 -0400 |
| commit | 08cd19c602145b75e2782831e1822f6fe7f560c9 (patch) | |
| tree | 00ea28075a1e1e7afde35444fbbc3244791f63f1 /arch/arm64/net | |
| parent | b31070890d2a5ecd9523d123a2ea94c0ee18d310 (diff) | |
arm64: kernel: Init MDCR_EL2 even in the absence of a PMU
commit 850540351bb1a4fa5f192e5ce55b89928cc57f42 upstream.
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>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arm64/net')
0 files changed, 0 insertions, 0 deletions