s390/cmf: remove unneeded DMA zone allocation

JIRA: https://issues.redhat.com/browse/RHEL-86670

commit 343c8a5
Author: Heiko Carstens <[email protected]>
Date:   Fri Jan 19 12:19:29 2024 +0100

    s390/cmf: remove unneeded DMA zone allocation

    The address of the measurement block can be anywhere in 64 bit
    absolute space. See description of the schm instruction in the
    Principles of Operation.

    Therefore remove the GFP_DMA flag when allocating the block.

    Acked-by: Alexander Gordeev <[email protected]>
    Reviewed-by: Vineeth Vijayan <[email protected]>
    Signed-off-by: Heiko Carstens <[email protected]>

Signed-off-by: Thomas Huth <[email protected]>

Author: huth

drivers/s390/cio/cmf.c

@@ -501,8 +501,7 @@ static int alloc_cmb(struct ccw_device *cdev)
 		WARN_ON(!list_empty(&cmb_area.list));
 
 		spin_unlock(&cmb_area.lock);
-		mem = (void*)__get_free_pages(GFP_KERNEL | GFP_DMA,
-				 get_order(size));
+		mem = (void *)__get_free_pages(GFP_KERNEL, get_order(size));
 		spin_lock(&cmb_area.lock);
 
 		if (cmb_area.mem) {