On Fri, Dec 22, 2017 at 08:18:10AM -0600, Dan Rue wrote:
On Fri, Dec 22, 2017 at 09:45:08AM +0100, Greg Kroah-Hartman wrote:
4.14-stable review patch. If anyone has any objections, please let me know.
From: Kirill A. Shutemov kirill.shutemov@linux.intel.com
commit 83e3c48729d9ebb7af5a31a504f3fd6aff0348c4 upstream.
Size of the mem_section[] array depends on the size of the physical address space.
In preparation for boot-time switching between paging modes on x86-64 we need to make the allocation of mem_section[] dynamic, because otherwise we waste a lot of RAM: with CONFIG_NODE_SHIFT=10, mem_section[] size is 32kB for 4-level paging and 2MB for 5-level paging mode.
The patch allocates the array on the first call to sparse_memory_present_with_active_regions().
Signed-off-by: Kirill A. Shutemov kirill.shutemov@linux.intel.com Cc: Andrew Morton akpm@linux-foundation.org Cc: Andy Lutomirski luto@amacapital.net Cc: Borislav Petkov bp@suse.de Cc: Cyrill Gorcunov gorcunov@openvz.org Cc: Linus Torvalds torvalds@linux-foundation.org Cc: Peter Zijlstra peterz@infradead.org Cc: Thomas Gleixner tglx@linutronix.de Cc: linux-mm@kvack.org Link: http://lkml.kernel.org/r/20170929140821.37654-2-kirill.shutemov@linux.intel.... Signed-off-by: Ingo Molnar mingo@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
This patch causes a boot failure on arm64.
Please drop this patch, or pick up the fix in:
commit 629a359bdb0e0652a8227b4ff3125431995fec6e Author: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Date: Tue Nov 7 11:33:37 2017 +0300 mm/sparsemem: Fix ARM64 boot crash when CONFIG_SPARSEMEM_EXTREME=ySee https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1527427.html
Now added, thanks.
greg k-h