arm64: Document SW reserved PTE/PMD bits in Stage-2 descriptors (6fcfdf6d) · Commits · 戴 / test

Advertise bits [58:55] as reserved for SW in the S2 descriptors. Reviewed-by:

arch/arm64/include/asm/pgtable-hwdef.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -178,10 +178,12 @@
		#define PTE_S2_RDONLY (_AT(pteval_t, 1) << 6) /* HAP[2:1] */
		#define PTE_S2_RDWR (_AT(pteval_t, 3) << 6) /* HAP[2:1] */
		#define PTE_S2_XN (_AT(pteval_t, 2) << 53) /* XN[1:0] */
		#define PTE_S2_SW_RESVD (_AT(pteval_t, 15) << 55) /* Reserved for SW */

		#define PMD_S2_RDONLY (_AT(pmdval_t, 1) << 6) /* HAP[2:1] */
		#define PMD_S2_RDWR (_AT(pmdval_t, 3) << 6) /* HAP[2:1] */
		#define PMD_S2_XN (_AT(pmdval_t, 2) << 53) /* XN[1:0] */
		#define PMD_S2_SW_RESVD (_AT(pmdval_t, 15) << 55) /* Reserved for SW */

		#define PUD_S2_RDONLY (_AT(pudval_t, 1) << 6) /* HAP[2:1] */
		#define PUD_S2_RDWR (_AT(pudval_t, 3) << 6) /* HAP[2:1] */