aarch64/system/mte.S

8  * SPDX-License-Identifier: LGPL-2.1-or-later
11 #define addr		x0 /* Ptr to the start of the MTE-enabled page. */
12 #define tagged_addr	x1 /* 'addr' ptr with a random-generated tag added. */
28 	 * Set MAIR_EL1 (Memory Attribute Index Register). In boot.S, the
29 	 * attribute index for .mte_page is set to point to MAILR_EL field Attr1
30 	 * (AttrIndx=Attr1), so set Attr1 as Tagged Normal (MTE) to enable MTE
40 	 * Set TCR_EL1 (Translation Control Registers) to ignore the top byte
50 	 * Set SCTLR_EL1 (System Control Register) to enable the use of MTE
67 	 * MTE-enabled page resides at the 3rd 2MB chunk in the second 1GB
77 	 * Set GCR for random tag generation. 0xA5 is just a random value to set
92 	 * set the allocation tag for granule at 'addr'. The tag is extracted
101 	 * set the same, otherwise something is off and the test fails -- an
107 	/* This label is used by GDB Python script test-mte.py. */