Commit f10cd522 authored by Stefano Stabellini's avatar Stefano Stabellini Committed by Konrad Rzeszutek Wilk

xen: disable PV spinlocks on HVM

PV spinlocks cannot possibly work with the current code because they are
enabled after pvops patching has already been done, and because PV
spinlocks use a different data structure than native spinlocks so we
cannot switch between them dynamically. A spinlock that has been taken
once by the native code (__ticket_spin_lock) cannot be taken by
__xen_spin_lock even after it has been released.
Reported-and-Tested-by: default avatarStefan Bader <stefan.bader@canonical.com>
Signed-off-by: default avatarStefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
parent ed467e69
...@@ -532,7 +532,6 @@ static void __init xen_hvm_smp_prepare_cpus(unsigned int max_cpus) ...@@ -532,7 +532,6 @@ static void __init xen_hvm_smp_prepare_cpus(unsigned int max_cpus)
WARN_ON(xen_smp_intr_init(0)); WARN_ON(xen_smp_intr_init(0));
xen_init_lock_cpu(0); xen_init_lock_cpu(0);
xen_init_spinlocks();
} }
static int __cpuinit xen_hvm_cpu_up(unsigned int cpu) static int __cpuinit xen_hvm_cpu_up(unsigned int cpu)
......
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