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(parent: 26e7d2a) | patch
arm64: Clear OSDLR_EL1 on CPU boot
authorJean-Philippe Brucker <jean-philippe.brucker@arm.com>
Mon, 8 Apr 2019 17:17:18 +0000 (18:17 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 22 May 2019 05:37:36 +0000 (07:37 +0200)
commitf273cd16554a92ea746cf117a126ff5be8c54794
treedaeab5ecceb4028968f130cb0d1074a2c2b13ed1tree | snapshot
parent26e7d2ad97b9dcc1a4618d0803847a31fc013e86commit | diff
arm64: Clear OSDLR_EL1 on CPU boot

commit 6fda41bf12615ee7c3ddac88155099b1a8cf8d00 upstream.

Some firmwares may reboot CPUs with OS Double Lock set. Make sure that
it is unlocked, in order to use debug exceptions.

Cc: <stable@vger.kernel.org>
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/arm64/kernel/debug-monitors.c diff | blob | history
Domain: System / Kernel;