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Arm FF-A fix for v7.1 Use the page aligned backing allocation size when computing the RXTX_MAP page count. This fixes FF-A RX/TX buffer registration on kernels built with 16K/64K PAGE_SIZE, where alloc_pages_exact() backs the buffer with a larger aligned span than the discovered minimum buffer size. * tag 'ffa-fix-7.1' of https://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux: firmware: arm_ffa: Use the correct buffer size during RXTX_MAP Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>