Merge tag 'fscache-next-20210829' of git://git.kernel.org/pub/scm/linux/kernel/git...

[linux-2.6-microblaze.git] / arch / arm64 / include / asm / sysreg.h

diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
index 7b9c3ac..f2e06e7 100644 (file)
--- a/arch/arm64/include/asm/sysreg.h
+++ b/arch/arm64/include/asm/sysreg.h
@@ -11,6 +11,7 @@
 
 #include <linux/bits.h>
 #include <linux/stringify.h>
+#include <linux/kasan-tags.h>
 
 /*
  * ARMv8 ARM reserves the following encoding for system registers:
@@ -698,8 +699,7 @@
        (SCTLR_ELx_M    | SCTLR_ELx_C    | SCTLR_ELx_SA   | SCTLR_EL1_SA0   | \
         SCTLR_EL1_SED  | SCTLR_ELx_I    | SCTLR_EL1_DZE  | SCTLR_EL1_UCT   | \
         SCTLR_EL1_NTWE | SCTLR_ELx_IESB | SCTLR_EL1_SPAN | SCTLR_ELx_ITFSB | \
-        SCTLR_ELx_ATA  | SCTLR_EL1_ATA0 | ENDIAN_SET_EL1 | SCTLR_EL1_UCI   | \
-        SCTLR_EL1_EPAN | SCTLR_EL1_RES1)
+        ENDIAN_SET_EL1 | SCTLR_EL1_UCI  | SCTLR_EL1_EPAN | SCTLR_EL1_RES1)
 
 /* MAIR_ELx memory attributes (used by Linux) */
 #define MAIR_ATTR_DEVICE_nGnRnE                UL(0x00)
@@ -847,12 +847,16 @@
 #define ID_AA64MMFR0_ASID_SHIFT                4
 #define ID_AA64MMFR0_PARANGE_SHIFT     0
 
-#define ID_AA64MMFR0_TGRAN4_NI         0xf
-#define ID_AA64MMFR0_TGRAN4_SUPPORTED  0x0
-#define ID_AA64MMFR0_TGRAN64_NI                0xf
-#define ID_AA64MMFR0_TGRAN64_SUPPORTED 0x0
-#define ID_AA64MMFR0_TGRAN16_NI                0x0
-#define ID_AA64MMFR0_TGRAN16_SUPPORTED 0x1
+#define ID_AA64MMFR0_TGRAN4_NI                 0xf
+#define ID_AA64MMFR0_TGRAN4_SUPPORTED_MIN      0x0
+#define ID_AA64MMFR0_TGRAN4_SUPPORTED_MAX      0x7
+#define ID_AA64MMFR0_TGRAN64_NI                        0xf
+#define ID_AA64MMFR0_TGRAN64_SUPPORTED_MIN     0x0
+#define ID_AA64MMFR0_TGRAN64_SUPPORTED_MAX     0x7
+#define ID_AA64MMFR0_TGRAN16_NI                        0x0
+#define ID_AA64MMFR0_TGRAN16_SUPPORTED_MIN     0x1
+#define ID_AA64MMFR0_TGRAN16_SUPPORTED_MAX     0xf
+
 #define ID_AA64MMFR0_PARANGE_48                0x5
 #define ID_AA64MMFR0_PARANGE_52                0x6
 
@@ -1028,16 +1032,16 @@
 
 #if defined(CONFIG_ARM64_4K_PAGES)
 #define ID_AA64MMFR0_TGRAN_SHIFT               ID_AA64MMFR0_TGRAN4_SHIFT
-#define ID_AA64MMFR0_TGRAN_SUPPORTED_MIN       ID_AA64MMFR0_TGRAN4_SUPPORTED
-#define ID_AA64MMFR0_TGRAN_SUPPORTED_MAX       0x7
+#define ID_AA64MMFR0_TGRAN_SUPPORTED_MIN       ID_AA64MMFR0_TGRAN4_SUPPORTED_MIN
+#define ID_AA64MMFR0_TGRAN_SUPPORTED_MAX       ID_AA64MMFR0_TGRAN4_SUPPORTED_MAX
 #elif defined(CONFIG_ARM64_16K_PAGES)
 #define ID_AA64MMFR0_TGRAN_SHIFT               ID_AA64MMFR0_TGRAN16_SHIFT
-#define ID_AA64MMFR0_TGRAN_SUPPORTED_MIN       ID_AA64MMFR0_TGRAN16_SUPPORTED
-#define ID_AA64MMFR0_TGRAN_SUPPORTED_MAX       0xF
+#define ID_AA64MMFR0_TGRAN_SUPPORTED_MIN       ID_AA64MMFR0_TGRAN16_SUPPORTED_MIN
+#define ID_AA64MMFR0_TGRAN_SUPPORTED_MAX       ID_AA64MMFR0_TGRAN16_SUPPORTED_MAX
 #elif defined(CONFIG_ARM64_64K_PAGES)
 #define ID_AA64MMFR0_TGRAN_SHIFT               ID_AA64MMFR0_TGRAN64_SHIFT
-#define ID_AA64MMFR0_TGRAN_SUPPORTED_MIN       ID_AA64MMFR0_TGRAN64_SUPPORTED
-#define ID_AA64MMFR0_TGRAN_SUPPORTED_MAX       0x7
+#define ID_AA64MMFR0_TGRAN_SUPPORTED_MIN       ID_AA64MMFR0_TGRAN64_SUPPORTED_MIN
+#define ID_AA64MMFR0_TGRAN_SUPPORTED_MAX       ID_AA64MMFR0_TGRAN64_SUPPORTED_MAX
 #endif
 
 #define MVFR2_FPMISC_SHIFT             4
@@ -1067,6 +1071,21 @@
 #define SYS_GCR_EL1_RRND       (BIT(16))
 #define SYS_GCR_EL1_EXCL_MASK  0xffffUL
 
+#ifdef CONFIG_KASAN_HW_TAGS
+/*
+ * KASAN always uses a whole byte for its tags. With CONFIG_KASAN_HW_TAGS it
+ * only uses tags in the range 0xF0-0xFF, which we map to MTE tags 0x0-0xF.
+ */
+#define __MTE_TAG_MIN          (KASAN_TAG_MIN & 0xf)
+#define __MTE_TAG_MAX          (KASAN_TAG_MAX & 0xf)
+#define __MTE_TAG_INCL         GENMASK(__MTE_TAG_MAX, __MTE_TAG_MIN)
+#define KERNEL_GCR_EL1_EXCL    (SYS_GCR_EL1_EXCL_MASK & ~__MTE_TAG_INCL)
+#else
+#define KERNEL_GCR_EL1_EXCL    SYS_GCR_EL1_EXCL_MASK
+#endif
+
+#define KERNEL_GCR_EL1         (SYS_GCR_EL1_RRND | KERNEL_GCR_EL1_EXCL)
+
 /* RGSR_EL1 Definitions */
 #define SYS_RGSR_EL1_TAG_MASK  0xfUL
 #define SYS_RGSR_EL1_SEED_SHIFT        8