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authorAnton Ivanov <anton.ivanov@cambridgegreys.com>2021-03-12 18:16:07 +0300
committerRichard Weinberger <richard@nod.at>2021-06-17 23:01:26 +0300
commitd8fb32f4790f2a286e58db8548016378ac35fc6f (patch)
tree050c2708dc80d0d61fb6d247a487d02e3c2b6f4f /arch/um/Kconfig
parent386093c68ba3e8bcfe7f46deba901e0e80713c29 (diff)
downloadlinux-d8fb32f4790f2a286e58db8548016378ac35fc6f.tar.xz
um: Add support for host CPU flags and alignment
1. Reflect host cpu flags into the UML instance so they can be used to select the correct implementations for xor, crypto, etc. 2. Reflect host cache alignment into UML instance. This is important when running 32 bit on a 64 bit host as 32 bit by default aligns to 32 while the actual alignment should be 64. Ditto for some Xeons which align at 128. Signed-off-by: Anton Ivanov <anton.ivanov@cambridgegreys.com> Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um/Kconfig')
-rw-r--r--arch/um/Kconfig3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/um/Kconfig b/arch/um/Kconfig
index fe6d898aeb85..0561b73cfd9a 100644
--- a/arch/um/Kconfig
+++ b/arch/um/Kconfig
@@ -76,6 +76,9 @@ config NR_CPUS
range 1 1
default 1
+config ARCH_HAS_CACHE_LINE_SIZE
+ def_bool y
+
source "arch/$(HEADER_ARCH)/um/Kconfig"
config MAY_HAVE_RUNTIME_DEPS