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authorVitaly Kuznetsov <vkuznets@redhat.com>2021-05-13 10:32:46 +0300
committerThomas Gleixner <tglx@linutronix.de>2021-05-14 15:55:13 +0300
commit3486d2c9be652a31033363bdd50391b0c8a8fe21 (patch)
tree5260971f4242bc57e2046898d0fd06298d453361 /arch
parente09784a8a751e539dffc94d43bc917b0ac1e934a (diff)
downloadlinux-3486d2c9be652a31033363bdd50391b0c8a8fe21.tar.xz
clocksource/drivers/hyper-v: Re-enable VDSO_CLOCKMODE_HVCLOCK on X86
Mohammed reports (https://bugzilla.kernel.org/show_bug.cgi?id=213029) the commit e4ab4658f1cf ("clocksource/drivers/hyper-v: Handle vDSO differences inline") broke vDSO on x86. The problem appears to be that VDSO_CLOCKMODE_HVCLOCK is an enum value in 'enum vdso_clock_mode' and '#ifdef VDSO_CLOCKMODE_HVCLOCK' branch evaluates to false (it is not a define). Use a dedicated HAVE_VDSO_CLOCKMODE_HVCLOCK define instead. Fixes: e4ab4658f1cf ("clocksource/drivers/hyper-v: Handle vDSO differences inline") Reported-by: Mohammed Gamal <mgamal@redhat.com> Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/20210513073246.1715070-1-vkuznets@redhat.com
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/include/asm/vdso/clocksource.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/include/asm/vdso/clocksource.h b/arch/x86/include/asm/vdso/clocksource.h
index 119ac8612d89..136e5e57cfe1 100644
--- a/arch/x86/include/asm/vdso/clocksource.h
+++ b/arch/x86/include/asm/vdso/clocksource.h
@@ -7,4 +7,6 @@
VDSO_CLOCKMODE_PVCLOCK, \
VDSO_CLOCKMODE_HVCLOCK
+#define HAVE_VDSO_CLOCKMODE_HVCLOCK
+
#endif /* __ASM_VDSO_CLOCKSOURCE_H */