Commit 3c51d0a6 authored by Wanpeng Li's avatar Wanpeng Li Committed by Paolo Bonzini
Browse files

x86/kvm: Don't waste memory if kvmclock is disabled 



Even if "no-kvmclock" is passed in cmdline parameter, the guest kernel
still allocates hvclock_mem which is scaled by the number of vCPUs,
let's check kvmclock enable in advance to avoid this memory waste.

Signed-off-by: default avatarWanpeng Li <wanpengli@tencent.com>
Message-Id: <1645520523-30814-1-git-send-email-wanpengli@tencent.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 40cd58db

arch/x86/kernel/kvmclock.c

+3 −0
Original line number Diff line number Diff line
@@ -239,6 +239,9 @@ static void __init kvmclock_init_mem(void) 


static int __init kvm_setup_vsyscall_timeinfo(void)

{

	if (!kvmclock)

		return 0;



	kvmclock_init_mem();



#ifdef CONFIG_X86_64