From: Jeff Dike <jdike@addtoit.com>
Date: Tue, 27 Mar 2007 05:32:20 +0000 (-0800)
Subject: [PATCH] uml: fix epoll
X-Git-Tag: v6.6-pxa1908~55576
X-Git-Url: https://git.dujemihanovic.xyz/?a=commitdiff_plain;h=d75e26a8298f84bca66374e98fa69049f26083ba;p=linux.git

[PATCH] uml: fix epoll

UML/x86_64 needs the same packing of struct epoll_event as x86_64.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Davide Libenzi <davidel@xmailserver.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/include/linux/eventpoll.h b/include/linux/eventpoll.h
index 84cfa8bbdc36..d2a96cbf4f0e 100644
--- a/include/linux/eventpoll.h
+++ b/include/linux/eventpoll.h
@@ -31,12 +31,19 @@
 /* 
  * On x86-64 make the 64bit structure have the same alignment as the
  * 32bit structure. This makes 32bit emulation easier.
+ *
+ * UML/x86_64 needs the same packing as x86_64 - UML + UML_X86 +
+ * 64_BIT adds up to UML/x86_64.
  */
 #ifdef __x86_64__
 #define EPOLL_PACKED __attribute__((packed))
 #else
+#if defined(CONFIG_UML) && defined(CONFIG_UML_X86) && defined(CONFIG_64BIT)
+#define EPOLL_PACKED __attribute__((packed))
+#else
 #define EPOLL_PACKED
 #endif
+#endif
 
 struct epoll_event {
 	__u32 events;