[Xen-changelog] [xen staging] Arm64: further speed-up to hweight{32, 64}()

[patchbot@xxxxxxx]

commit 93099a4afccff96fc29176baba745f687cee1a8f
Author:     Jan Beulich <JBeulich@xxxxxxxx>
AuthorDate: Fri May 31 03:53:39 2019 -0600
Commit:     Julien Grall <julien.grall@xxxxxxx>
CommitDate: Thu Jun 6 16:25:15 2019 +0100

    Arm64: further speed-up to hweight{32,64}()
    
    According to Linux commit e75bef2a4f ("arm64: Select
    ARCH_HAS_FAST_MULTIPLIER") this is a further improvement over the
    variant using only bitwise operations on at least some hardware, and no
    worse on other.
    
    Suggested-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Julien Grall <julien.grall@xxxxxxx>
---
 xen/arch/arm/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig
index 581de67b6b..585b57f023 100644
--- a/xen/arch/arm/Kconfig
+++ b/xen/arch/arm/Kconfig
@@ -12,6 +12,7 @@ config ARM_32
 config ARM_64
        def_bool y
        depends on 64BIT
+       select HAS_FAST_MULTIPLY
 
 config ARM
        def_bool y
--
generated by git-patchbot for /home/xen/git/xen.git#staging

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