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602946ec2f
max_mapnr is used by virt_addr_valid() to check if a linear address is valid. It must only include lowmem PFNs, like other architectures. Problem detected on a system with 1G mem (Only 768M are mapped), with CONFIG_DEBUG_VIRTUAL and CONFIG_TEST_DEBUG_VIRTUAL, it didn't report virt_to_phys(VMALLOC_START), VMALLOC_START being 0xf1000000. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/77d99037782ac4b3c3b0124fc4ae80ce7b760b05.1634035228.git.christophe.leroy@csgroup.eu |
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