Messages in this thread | | | Date | Thu, 1 Jun 2023 05:54:28 -0400 | From | Sasha Levin <> | Subject | Re: [PATCH AUTOSEL 6.3 06/11] of: fdt: Scan /memreserve/ last |
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On Mon, May 15, 2023 at 09:21:04PM +0100, Conor Dooley wrote: >Hey Sasha, > >On Thu, May 11, 2023 at 03:37:49PM -0400, Sasha Levin wrote: >> From: Lucas Tanure <tanure@linux.com> >> >> [ Upstream commit b413281876292de44ae84e9a9ce9d62e47f266e9 ] >> >> Change the scanning /memreserve/ and /reserved-memory node order to fix >> Kernel panic on Khadas Vim3 Board. >> >> If /memreserve/ goes first, the memory is reserved, but nomap can't be >> applied to the region. So the memory won't be used by Linux, but it is >> still present in the linear map as normal memory, which allows >> speculation. Legitimate access to adjacent pages will cause the CPU >> to end up prefetching into them leading to Kernel panic. >> >> So /reserved-memory node should go first, as it has a more updated >> description of the memory regions and can apply flags, like nomap. >> >> Link: https://lore.kernel.org/all/CAJX_Q+1Tjc+-TjZ6JW9X0NxEdFe=82a9626yL63j7uVD4LpxEA@mail.gmail.com/ >> Signed-off-by: Lucas Tanure <tanure@linux.com> >> Link: https://lore.kernel.org/r/20230424113846.46382-1-tanure@linux.com >> Signed-off-by: Rob Herring <robh@kernel.org> >> Signed-off-by: Sasha Levin <sashal@kernel.org> > >Rob requested that this patch (and it's bretheren in other AUTOSEL >series) not be backported immediately: >| Going to let this sit in linux-next for a bit. I also didn't tag for >| stable kernels. I want it to get some exposure in mainline at least for >| a few -rc releases rather than getting backported right away. Please >| help ensure that happens if you see stable review emails. I'm going to >| be offline most of the next month. >https://lore.kernel.org/linux-devicetree/168262872454.3491083.6407810340850053636.robh@kernel.org/ > >Perhaps delaying it for another couple of weeks, since we have only just >had -rc2, is a good idead?
I'll drop it, let me know when you want it included back. Thanks!
-- Thanks, Sasha
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