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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v2 11/16] xen/arm: lpae: Fix comments coding style
Also adding one missing full stop + fix description
Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
---
Cc: proskurin@xxxxxxxxxxxxx
I haven't retained Stefano's reviewed-by because of the description
update.
Changes in v2:
- Fix description regarding x86 page-table
---
xen/include/asm-arm/lpae.h | 49 ++++++++++++++++++++++++++++++----------------
1 file changed, 32 insertions(+), 17 deletions(-)
diff --git a/xen/include/asm-arm/lpae.h b/xen/include/asm-arm/lpae.h
index ad8c571ea5..aa85cb8112 100644
--- a/xen/include/asm-arm/lpae.h
+++ b/xen/include/asm-arm/lpae.h
@@ -3,10 +3,12 @@
#ifndef __ASSEMBLY__
-/* WARNING! Unlike the Intel pagetable code, where l1 is the lowest
- * level and l4 is the root of the trie, the ARM pagetables follow ARM's
- * documentation: the levels are called first, second &c in the order
- * that the MMU walks them (i.e. "first" is the root of the trie). */
+/*
+ * WARNING! Unlike the x86 pagetable code, where l1 is the lowest level and
+ * l4 is the root of the trie, the ARM pagetables follow ARM's documentation:
+ * the levels are called first, second &c in the order that the MMU walks them
+ * (i.e. "first" is the root of the trie).
+ */
/******************************************************************************
* ARMv7-A LPAE pagetables: 3-level trie, mapping 40-bit input to
@@ -17,15 +19,18 @@
* different place from those in leaf nodes seems to be to allow linear
* pagetable tricks. If we're not doing that then the set of permission
* bits that's not in use in a given node type can be used as
- * extra software-defined bits. */
+ * extra software-defined bits.
+ */
typedef struct __packed {
/* These are used in all kinds of entry. */
unsigned long valid:1; /* Valid mapping */
unsigned long table:1; /* == 1 in 4k map entries too */
- /* These ten bits are only used in Block entries and are ignored
- * in Table entries. */
+ /*
+ * These ten bits are only used in Block entries and are ignored
+ * in Table entries.
+ */
unsigned long ai:3; /* Attribute Index */
unsigned long ns:1; /* Not-Secure */
unsigned long user:1; /* User-visible */
@@ -38,30 +43,38 @@ typedef struct __packed {
unsigned long long base:36; /* Base address of block or next table */
unsigned long sbz:4; /* Must be zero */
- /* These seven bits are only used in Block entries and are ignored
- * in Table entries. */
+ /*
+ * These seven bits are only used in Block entries and are ignored
+ * in Table entries.
+ */
unsigned long contig:1; /* In a block of 16 contiguous entries */
unsigned long pxn:1; /* Privileged-XN */
unsigned long xn:1; /* eXecute-Never */
unsigned long avail:4; /* Ignored by hardware */
- /* These 5 bits are only used in Table entries and are ignored in
- * Block entries */
+ /*
+ * These 5 bits are only used in Table entries and are ignored in
+ * Block entries.
+ */
unsigned long pxnt:1; /* Privileged-XN */
unsigned long xnt:1; /* eXecute-Never */
unsigned long apt:2; /* Access Permissions */
unsigned long nst:1; /* Not-Secure */
} lpae_pt_t;
-/* The p2m tables have almost the same layout, but some of the permission
- * and cache-control bits are laid out differently (or missing) */
+/*
+ * The p2m tables have almost the same layout, but some of the permission
+ * and cache-control bits are laid out differently (or missing).
+ */
typedef struct __packed {
/* These are used in all kinds of entry. */
unsigned long valid:1; /* Valid mapping */
unsigned long table:1; /* == 1 in 4k map entries too */
- /* These ten bits are only used in Block entries and are ignored
- * in Table entries. */
+ /*
+ * These ten bits are only used in Block entries and are ignored
+ * in Table entries.
+ */
unsigned long mattr:4; /* Memory Attributes */
unsigned long read:1; /* Read access */
unsigned long write:1; /* Write access */
@@ -73,8 +86,10 @@ typedef struct __packed {
unsigned long long base:36; /* Base address of block or next table */
unsigned long sbz3:4;
- /* These seven bits are only used in Block entries and are ignored
- * in Table entries. */
+ /*
+ * These seven bits are only used in Block entries and are ignored
+ * in Table entries.
+ */
unsigned long contig:1; /* In a block of 16 contiguous entries */
unsigned long sbz2:1;
unsigned long xn:1; /* eXecute-Never */
--
2.11.0
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