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authorVitaly Kuznetsov <vkuznets@redhat.com>2018-01-24 14:23:32 +0100
committerThomas Gleixner <tglx@linutronix.de>2018-01-30 23:55:32 +0100
commite2768eaa1ca4fbb7b778da5615cce3dd310352e6 (patch)
treec0c97a888218a8c23324aa1a5db08d1361972f0b /arch/x86/hyperv
parent89a8f6d4904c8cf3ff8fee9fdaff392a6bbb8bf6 (diff)
downloadlinux-e2768eaa1ca4fbb7b778da5615cce3dd310352e6.tar.bz2
x86/hyperv: Add a function to read both TSC and TSC page value simulateneously
This is going to be used from KVM code where both TSC and TSC page value are needed. Nothing is supposed to use the function when Hyper-V code is compiled out, just BUG(). Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: kvm@vger.kernel.org Cc: Radim Krčmář <rkrcmar@redhat.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: "Michael Kelley (EOSG)" <Michael.H.Kelley@microsoft.com> Cc: Roman Kagan <rkagan@virtuozzo.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: devel@linuxdriverproject.org Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Cathy Avery <cavery@redhat.com> Cc: Mohammed Gamal <mmorsy@redhat.com> Link: https://lkml.kernel.org/r/20180124132337.30138-3-vkuznets@redhat.com
Diffstat (limited to 'arch/x86/hyperv')
-rw-r--r--arch/x86/hyperv/hv_init.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c
index 21f9d53d9f00..1a6c63f721bc 100644
--- a/arch/x86/hyperv/hv_init.c
+++ b/arch/x86/hyperv/hv_init.c
@@ -37,6 +37,7 @@ struct ms_hyperv_tsc_page *hv_get_tsc_page(void)
{
return tsc_pg;
}
+EXPORT_SYMBOL_GPL(hv_get_tsc_page);
static u64 read_hv_clock_tsc(struct clocksource *arg)
{