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authorNicolas Pitre <nicolas.pitre@linaro.org>2017-11-27 15:51:04 -0500
committerTejun Heo <tj@kernel.org>2017-11-27 12:53:12 -0800
commitabee210500ed15a22787009d9210b9a34911afcc (patch)
treef9f88e73a2484cf183996dd13ad461f982d4f50d /mm/failslab.c
parent4fbd8d194f06c8a3fd2af1ce560ddb31f7ec8323 (diff)
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percpu: hack to let the CRIS architecture to boot until they clean up
Commit 438a506180 ("percpu: don't forget to free the temporary struct pcpu_alloc_info") uncovered a problem on the CRIS architecture where the bootmem allocator is initialized with virtual addresses. Given it has: #define __va(x) ((void *)((unsigned long)(x) | 0x80000000)) then things just work out because the end result is the same whether you give this a physical or a virtual address. Untill you call memblock_free_early(__pa(address)) that is, because values from __pa() don't match with the virtual addresses stuffed in the bootmem allocator anymore. Avoid freeing the temporary pcpu_alloc_info memory on that architecture until they fix things up to let the kernel boot like it did before. Signed-off-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Tejun Heo <tj@kernel.org> Fixes: 438a506180 ("percpu: don't forget to free the temporary struct pcpu_alloc_info")
Diffstat (limited to 'mm/failslab.c')
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