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Subjectlinux-next: build failure after merge of the kbuild tree
Hi all,

After merging the kbuild tree, today's linux-next build (powerpc
allyesconfig) failed like this:

In file included from <command-line>:
include/clocksource/hyperv_timer.h:18:10: fatal error: asm/mshyperv.h: No such file or directory
#include <asm/mshyperv.h>

Caused by commit

34085aeb5816 ("kbuild: compile-test kernel headers to ensure they are self-contained")

interacting with commit

dd2cb348613b ("clocksource/drivers: Continue making Hyper-V clocksource ISA agnostic")

from the tip tree.

I have added the following patch for today.

From: Stephen Rothwell <>
Date: Fri, 5 Jul 2019 18:17:44 +1000
Subject: [PATCH] kbuild: only compile test clocksource/hyperv_timer.h on X86

Signed-off-by: Stephen Rothwell <>
include/Kbuild | 1 +
1 file changed, 1 insertion(+)

diff --git a/include/Kbuild b/include/Kbuild
index 4f9524d92a75..a7ab060552c2 100644
--- a/include/Kbuild
+++ b/include/Kbuild
@@ -29,6 +29,7 @@ header-test- += acpi/platform/acintel.h
header-test- += acpi/platform/aclinux.h
header-test- += acpi/platform/aclinuxex.h
header-test- += acpi/processor.h
+header-test-$(CONFIG_X86) += clocksource/hyperv_timer.h
header-test- += clocksource/timer-sp804.h
header-test- += crypto/cast_common.h
header-test- += crypto/internal/cryptouser.h

Stephen Rothwell
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