[PATCH 5.15 02/79] arm64/mm: Consolidate TCR_EL1 fields

From: Greg Kroah-Hartman
Date: Thu Oct 27 2022 - 13:01:49 EST


From: Anshuman Khandual <anshuman.khandual@xxxxxxx>

commit e921da6bc7cac5f0e8458fe5df18ae08eb538f54 upstream.

This renames and moves SYS_TCR_EL1_TCMA1 and SYS_TCR_EL1_TCMA0 definitions
into pgtable-hwdef.h thus consolidating all TCR fields in a single header.
This does not cause any functional change.

Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
Link: https://lore.kernel.org/r/1643121513-21854-1-git-send-email-anshuman.khandual@xxxxxxx
Signed-off-by: Will Deacon <will@xxxxxxxxxx>
Cc: Evgenii Stepanov <eugenis@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm64/include/asm/pgtable-hwdef.h | 2 ++
arch/arm64/include/asm/sysreg.h | 4 ----
arch/arm64/mm/proc.S | 2 +-
3 files changed, 3 insertions(+), 5 deletions(-)

--- a/arch/arm64/include/asm/pgtable-hwdef.h
+++ b/arch/arm64/include/asm/pgtable-hwdef.h
@@ -273,6 +273,8 @@
#define TCR_NFD1 (UL(1) << 54)
#define TCR_E0PD0 (UL(1) << 55)
#define TCR_E0PD1 (UL(1) << 56)
+#define TCR_TCMA0 (UL(1) << 57)
+#define TCR_TCMA1 (UL(1) << 58)

/*
* TTBR.
--- a/arch/arm64/include/asm/sysreg.h
+++ b/arch/arm64/include/asm/sysreg.h
@@ -1094,10 +1094,6 @@
#define CPACR_EL1_ZEN_EL0EN (BIT(17)) /* enable EL0 access, if EL1EN set */
#define CPACR_EL1_ZEN (CPACR_EL1_ZEN_EL1EN | CPACR_EL1_ZEN_EL0EN)

-/* TCR EL1 Bit Definitions */
-#define SYS_TCR_EL1_TCMA1 (BIT(58))
-#define SYS_TCR_EL1_TCMA0 (BIT(57))
-
/* GCR_EL1 Definitions */
#define SYS_GCR_EL1_RRND (BIT(16))
#define SYS_GCR_EL1_EXCL_MASK 0xffffUL
--- a/arch/arm64/mm/proc.S
+++ b/arch/arm64/mm/proc.S
@@ -46,7 +46,7 @@
#endif

#ifdef CONFIG_KASAN_HW_TAGS
-#define TCR_MTE_FLAGS SYS_TCR_EL1_TCMA1 | TCR_TBI1 | TCR_TBID1
+#define TCR_MTE_FLAGS TCR_TCMA1 | TCR_TBI1 | TCR_TBID1
#else
/*
* The mte_zero_clear_page_tags() implementation uses DC GZVA, which relies on