[Xen-changelog] [xen master] arm/mem_access: Introduce GENMASK_ULL bit operation

[patchbot@xxxxxxx]

commit 83be50576e8131642008575f65ddd9d5ede60b11
Author:     Sergej Proskurin <proskurin@xxxxxxxxxxxxx>
AuthorDate: Wed Aug 16 15:17:38 2017 +0200
Commit:     Stefano Stabellini <sstabellini@xxxxxxxxxx>
CommitDate: Fri Aug 18 10:27:33 2017 -0700

    arm/mem_access: Introduce GENMASK_ULL bit operation
    
    The current implementation of GENMASK is capable of creating bitmasks of
    32-bit values on AArch32 and 64-bit values on AArch64. As we need to
    create masks for 64-bit values on AArch32 as well, in this commit we
    introduce the GENMASK_ULL bit operation. Please note that the
    GENMASK_ULL implementation has been lifted from the linux kernel source
    code.
    
    Signed-off-by: Sergej Proskurin <proskurin@xxxxxxxxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
    Signed-off-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
 xen/include/asm-arm/config.h | 2 ++
 xen/include/asm-x86/config.h | 2 ++
 xen/include/xen/bitops.h     | 3 +++
 3 files changed, 7 insertions(+)

diff --git a/xen/include/asm-arm/config.h b/xen/include/asm-arm/config.h
index 5b6f3c9..7da9469 100644
--- a/xen/include/asm-arm/config.h
+++ b/xen/include/asm-arm/config.h
@@ -19,6 +19,8 @@
 #define BITS_PER_LONG (BYTES_PER_LONG << 3)
 #define POINTER_ALIGN BYTES_PER_LONG
 
+#define BITS_PER_LLONG 64
+
 /* xen_ulong_t is always 64 bits */
 #define BITS_PER_XEN_ULONG 64
 
diff --git a/xen/include/asm-x86/config.h b/xen/include/asm-x86/config.h
index 25af085..0130ac8 100644
--- a/xen/include/asm-x86/config.h
+++ b/xen/include/asm-x86/config.h
@@ -15,6 +15,8 @@
 #define BITS_PER_BYTE 8
 #define POINTER_ALIGN BYTES_PER_LONG
 
+#define BITS_PER_LLONG 64
+
 #define BITS_PER_XEN_ULONG BITS_PER_LONG
 
 #define CONFIG_PAGING_ASSISTANCE 1
diff --git a/xen/include/xen/bitops.h b/xen/include/xen/bitops.h
index bd0883a..e2019b0 100644
--- a/xen/include/xen/bitops.h
+++ b/xen/include/xen/bitops.h
@@ -10,6 +10,9 @@
 #define GENMASK(h, l) \
     (((~0UL) << (l)) & (~0UL >> (BITS_PER_LONG - 1 - (h))))
 
+#define GENMASK_ULL(h, l) \
+    (((~0ULL) << (l)) & (~0ULL >> (BITS_PER_LLONG - 1 - (h))))
+
 /*
  * ffs: find first bit set. This is defined the same way as
  * the libc and compiler builtin ffs routines, therefore
--
generated by git-patchbot for /home/xen/git/xen.git#master

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