From: Andrea Parri <parri.andrea@xxxxxxxxx> [ Upstream commit f7c0f50f1857c1cf013466fcea4dc98d116bf456 ] Michael reported that the x86/hyperv initialization code prints the following dmesg when running in a VM on Hyper-V: [ 0.000738] Booting paravirtualized kernel on bare hardware Let the x86/hyperv initialization code set pv_info.name to "Hyper-V" so dmesg reports correctly: [ 0.000172] Booting paravirtualized kernel on Hyper-V [ tglx: Folded build fix provided by Yue ] Reported-by: Michael Kelley <mikelley@xxxxxxxxxxxxx> Signed-off-by: Andrea Parri <parri.andrea@xxxxxxxxx> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Reviewed-by: Wei Liu <wei.liu@xxxxxxxxxx> Reviewed-by: Michael Kelley <mikelley@xxxxxxxxxxxxx> Cc: YueHaibing <yuehaibing@xxxxxxxxxx> Link: https://lkml.kernel.org/r/20191015103502.13156-1-parri.andrea@xxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- arch/x86/kernel/cpu/mshyperv.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c index c0201b11e9e2a..4e7adccf812d4 100644 --- a/arch/x86/kernel/cpu/mshyperv.c +++ b/arch/x86/kernel/cpu/mshyperv.c @@ -171,6 +171,10 @@ static void __init ms_hyperv_init_platform(void) int hv_host_info_ecx; int hv_host_info_edx; +#ifdef CONFIG_PARAVIRT + pv_info.name = "Hyper-V"; +#endif + /* * Extract the features and hints */ -- 2.20.1
