Detect the availability of the reset hcalls by looking at kvm,has-reset property on the /hypervisor node in the device tree passed to the VM and patches the reset mechanism to use reset hcall.
This patch uses the reser hcall when kvm,has-reset is there in Signed-off-by: Bharat Bhushan <[email protected]> --- arch/powerpc/kernel/epapr_paravirt.c | 12 ++++++++++++ 1 files changed, 12 insertions(+), 0 deletions(-) diff --git a/arch/powerpc/kernel/epapr_paravirt.c b/arch/powerpc/kernel/epapr_paravirt.c index d44a571..651d701 100644 --- a/arch/powerpc/kernel/epapr_paravirt.c +++ b/arch/powerpc/kernel/epapr_paravirt.c @@ -22,6 +22,8 @@ #include <asm/cacheflush.h> #include <asm/code-patching.h> #include <asm/machdep.h> +#include <asm/kvm_para.h> +#include <asm/kvm_host.h> #if !defined(CONFIG_64BIT) || defined(CONFIG_PPC_BOOK3E_64) extern void epapr_ev_idle(void); @@ -30,6 +32,14 @@ extern u32 epapr_ev_idle_start[]; bool epapr_paravirt_enabled; +void epapr_hypercall_reset(char *cmd) +{ + long ret; + ret = kvm_hypercall0(KVM_HC_VM_RESET); + printk("error: system reset returned with error %ld\n", ret); + BUG(); +} + static int __init epapr_paravirt_init(void) { struct device_node *hyper_node; @@ -58,6 +68,8 @@ static int __init epapr_paravirt_init(void) if (of_get_property(hyper_node, "has-idle", NULL)) ppc_md.power_save = epapr_ev_idle; #endif + if (of_get_property(hyper_node, "kvm,has-reset", NULL)) + ppc_md.restart = epapr_hypercall_reset; epapr_paravirt_enabled = true; -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
