[Xen-devel] [RFC PATCH V4 01/18] xen: correct BITS_PER_EVTCHN_WORD on arm

[Wei Liu <wei.liu2@xxxxxxxxxx>]

From: Ian Campbell <ian.campbell@xxxxxxxxxx>

This is always 64-bit on ARM, not BITS_PER_LONG

Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
Cc: keir@xxxxxxx
Cc: tim@xxxxxxx
Cc: stefano.stabellini@xxxxxxxxxx
Cc: jbuelich@xxxxxxxx
---
 xen/include/asm-arm/config.h |    3 +++
 xen/include/asm-x86/config.h |    2 ++
 xen/include/xen/sched.h      |    4 ++--
 3 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/xen/include/asm-arm/config.h b/xen/include/asm-arm/config.h
index 3910dd2..8be8563 100644
--- a/xen/include/asm-arm/config.h
+++ b/xen/include/asm-arm/config.h
@@ -22,6 +22,9 @@
 #define BYTES_PER_LONG (1 << LONG_BYTEORDER)
 #define BITS_PER_LONG (BYTES_PER_LONG << 3)
 
+/* xen_ulong_t is always 64 bits */
+#define BITS_PER_XEN_ULONG 64
+
 #define CONFIG_PAGING_ASSISTANCE 1
 
 #define CONFIG_PAGING_LEVELS 3
diff --git a/xen/include/asm-x86/config.h b/xen/include/asm-x86/config.h
index 0a5f031..cf93bd5 100644
--- a/xen/include/asm-x86/config.h
+++ b/xen/include/asm-x86/config.h
@@ -14,6 +14,8 @@
 #define BITS_PER_LONG (BYTES_PER_LONG << 3)
 #define BITS_PER_BYTE 8
 
+#define BITS_PER_XEN_ULONG BITS_PER_LONG
+
 #define CONFIG_X86 1
 #define CONFIG_X86_HT 1
 #define CONFIG_PAGING_ASSISTANCE 1
diff --git a/xen/include/xen/sched.h b/xen/include/xen/sched.h
index e108436..ccd0496 100644
--- a/xen/include/xen/sched.h
+++ b/xen/include/xen/sched.h
@@ -46,9 +46,9 @@ DEFINE_XEN_GUEST_HANDLE(vcpu_runstate_info_compat_t);
 extern struct domain *dom0;
 
 #ifndef CONFIG_COMPAT
-#define BITS_PER_EVTCHN_WORD(d) BITS_PER_LONG
+#define BITS_PER_EVTCHN_WORD(d) BITS_PER_XEN_ULONG
 #else
-#define BITS_PER_EVTCHN_WORD(d) (has_32bit_shinfo(d) ? 32 : BITS_PER_LONG)
+#define BITS_PER_EVTCHN_WORD(d) (has_32bit_shinfo(d) ? 32 : BITS_PER_XEN_ULONG)
 #endif
 #define MAX_EVTCHNS(d) (BITS_PER_EVTCHN_WORD(d) * BITS_PER_EVTCHN_WORD(d))
 #define EVTCHNS_PER_BUCKET 128
-- 
1.7.10.4


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