Messages in this thread | | | From | Eric Anholt <> | Subject | Re: [PATCH V2] ARM: dts: bcm283x: Reserve first page for firmware | Date | Tue, 09 May 2017 09:48:31 -0700 |
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Phil Elwell <phil@raspberrypi.org> writes:
> The Raspberry Pi startup stub files for multi-core BCM27XX processors > make the secondary CPUs spin until the corresponding mailbox is > written. These stubs are loaded at physical address 0x00000xxx (as seen > by the ARMs), but this page will be reused by the kernel unless it is > explicitly reserved, causing the waiting cores to execute random code. > > Use the /memreserve/ Device Tree directive to mark the first page as > off-limits to the kernel. > > See: https://github.com/raspberrypi/linux/issues/1989 > > Signed-off-by: Phil Elwell <phil@raspberrypi.org>
This looks great. We're currently in the merge window, so I can't generate a new bcm2835-dt-next yet, but I'll pick this patch up when I do.
Thanks for submitting upstream! [unhandled content-type:application/pgp-signature] | |