On 2020-11-09 11:32, David Brazdil wrote:
KVM currently initializes MAIR_EL2 to the value of MAIR_EL1. In
preparation for initializing MAIR_EL2 before MAIR_EL1, move the
constant
into a shared header file.
Signed-off-by: David Brazdil <dbrazdil@xxxxxxxxxx>
---
arch/arm64/include/asm/memory.h | 13 +++++++++++++
arch/arm64/mm/proc.S | 13 -------------
2 files changed, 13 insertions(+), 13 deletions(-)
diff --git a/arch/arm64/include/asm/memory.h
b/arch/arm64/include/asm/memory.h
index cd61239bae8c..aca00737e771 100644
--- a/arch/arm64/include/asm/memory.h
+++ b/arch/arm64/include/asm/memory.h
@@ -152,6 +152,19 @@
#define MT_S2_FWB_NORMAL 6
#define MT_S2_FWB_DEVICE_nGnRE 1
+/*
+ * Default MAIR_EL1. MT_NORMAL_TAGGED is initially mapped as Normal
memory and
+ * changed during __cpu_setup to Normal Tagged if the system supports
MTE.
+ */
+#define MAIR_EL1_SET \
If we are going to use this at EL2 directly, consider renaming it to
MAIR_ELx_SET, as we do for other constants that are shared across
exception
levels.
+ (MAIR_ATTRIDX(MAIR_ATTR_DEVICE_nGnRnE, MT_DEVICE_nGnRnE) | \
This creates an implicit dependency between sysreg.h and memory.h.
Consider including asm/sysreg.h, assuming this doesn't create any
circular
dependency, or even move it to sysreg.h altogether.
+ MAIR_ATTRIDX(MAIR_ATTR_DEVICE_nGnRE, MT_DEVICE_nGnRE) | \
+ MAIR_ATTRIDX(MAIR_ATTR_DEVICE_GRE, MT_DEVICE_GRE) | \
+ MAIR_ATTRIDX(MAIR_ATTR_NORMAL_NC, MT_NORMAL_NC) | \
+ MAIR_ATTRIDX(MAIR_ATTR_NORMAL, MT_NORMAL) | \
+ MAIR_ATTRIDX(MAIR_ATTR_NORMAL_WT, MT_NORMAL_WT) | \
+ MAIR_ATTRIDX(MAIR_ATTR_NORMAL, MT_NORMAL_TAGGED))
+
#ifdef CONFIG_ARM64_4K_PAGES
#define IOREMAP_MAX_ORDER (PUD_SHIFT)
#else
diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S
index 23c326a06b2d..25ff21b3a1c6 100644
--- a/arch/arm64/mm/proc.S
+++ b/arch/arm64/mm/proc.S
@@ -45,19 +45,6 @@
#define TCR_KASAN_FLAGS 0
#endif
-/*
- * Default MAIR_EL1. MT_NORMAL_TAGGED is initially mapped as Normal
memory and
- * changed during __cpu_setup to Normal Tagged if the system supports
MTE.
- */
-#define MAIR_EL1_SET \
- (MAIR_ATTRIDX(MAIR_ATTR_DEVICE_nGnRnE, MT_DEVICE_nGnRnE) | \
- MAIR_ATTRIDX(MAIR_ATTR_DEVICE_nGnRE, MT_DEVICE_nGnRE) | \
- MAIR_ATTRIDX(MAIR_ATTR_DEVICE_GRE, MT_DEVICE_GRE) | \
- MAIR_ATTRIDX(MAIR_ATTR_NORMAL_NC, MT_NORMAL_NC) | \
- MAIR_ATTRIDX(MAIR_ATTR_NORMAL, MT_NORMAL) | \
- MAIR_ATTRIDX(MAIR_ATTR_NORMAL_WT, MT_NORMAL_WT) | \
- MAIR_ATTRIDX(MAIR_ATTR_NORMAL, MT_NORMAL_TAGGED))
-
#ifdef CONFIG_CPU_PM
/**
* cpu_do_suspend - save CPU registers context
Thanks,
M.
--
Jazz is not dead. It just smells funny...
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