| Message ID | 1460120039-2497-3-git-send-email-linux@roeck-us.net (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Fri, Apr 08, 2016 at 05:53:55AM -0700, Guenter Roeck wrote: > Register with kernel restart handler instead of setting arm_pm_restart > directly. > > Select a high priority of 192 to ensure that default restart handlers Is there some macro for that magic value? > are replaced if Xen is running. > > Signed-off-by: Guenter Roeck <linux@roeck-us.net> > --- > arch/arm/xen/enlighten.c | 13 +++++++++++-- > 1 file changed, 11 insertions(+), 2 deletions(-) > > diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c > index 75cd7345c654..76a1d12fd27e 100644 > --- a/arch/arm/xen/enlighten.c > +++ b/arch/arm/xen/enlighten.c > @@ -27,6 +27,7 @@ > #include <linux/cpu.h> > #include <linux/console.h> > #include <linux/pvclock_gtod.h> > +#include <linux/reboot.h> > #include <linux/time64.h> > #include <linux/timekeeping.h> > #include <linux/timekeeper_internal.h> > @@ -193,14 +194,22 @@ after_register_vcpu_info: > put_cpu(); > } > > -static void xen_restart(enum reboot_mode reboot_mode, const char *cmd) > +static int xen_restart(struct notifier_block *nb, unsigned long action, > + void *data) > { > struct sched_shutdown r = { .reason = SHUTDOWN_reboot }; > int rc; > rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &r); > BUG_ON(rc); > + > + return NOTIFY_DONE; > } > > +static struct notifier_block xen_restart_nb = { > + .notifier_call = xen_restart, > + .priority = 192, > +}; > + > static void xen_power_off(void) > { > struct sched_shutdown r = { .reason = SHUTDOWN_poweroff }; > @@ -370,7 +379,7 @@ static int __init xen_pm_init(void) > return -ENODEV; > > pm_power_off = xen_power_off; > - arm_pm_restart = xen_restart; > + register_restart_handler(&xen_restart_nb); > if (!xen_initial_domain()) { > struct timespec64 ts; > xen_read_wallclock(&ts); > -- > 2.5.0 > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xen.org > http://lists.xen.org/xen-devel
On Fri, Apr 08, 2016 at 11:22:57AM -0400, Konrad Rzeszutek Wilk wrote: > On Fri, Apr 08, 2016 at 05:53:55AM -0700, Guenter Roeck wrote: > > Register with kernel restart handler instead of setting arm_pm_restart > > directly. > > > > Select a high priority of 192 to ensure that default restart handlers > > Is there some macro for that magic value? > No, only guidelines in kernel/reboot.c. Guenter > > are replaced if Xen is running. > > > > Signed-off-by: Guenter Roeck <linux@roeck-us.net> > > --- > > arch/arm/xen/enlighten.c | 13 +++++++++++-- > > 1 file changed, 11 insertions(+), 2 deletions(-) > > > > diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c > > index 75cd7345c654..76a1d12fd27e 100644 > > --- a/arch/arm/xen/enlighten.c > > +++ b/arch/arm/xen/enlighten.c > > @@ -27,6 +27,7 @@ > > #include <linux/cpu.h> > > #include <linux/console.h> > > #include <linux/pvclock_gtod.h> > > +#include <linux/reboot.h> > > #include <linux/time64.h> > > #include <linux/timekeeping.h> > > #include <linux/timekeeper_internal.h> > > @@ -193,14 +194,22 @@ after_register_vcpu_info: > > put_cpu(); > > } > > > > -static void xen_restart(enum reboot_mode reboot_mode, const char *cmd) > > +static int xen_restart(struct notifier_block *nb, unsigned long action, > > + void *data) > > { > > struct sched_shutdown r = { .reason = SHUTDOWN_reboot }; > > int rc; > > rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &r); > > BUG_ON(rc); > > + > > + return NOTIFY_DONE; > > } > > > > +static struct notifier_block xen_restart_nb = { > > + .notifier_call = xen_restart, > > + .priority = 192, > > +}; > > + > > static void xen_power_off(void) > > { > > struct sched_shutdown r = { .reason = SHUTDOWN_poweroff }; > > @@ -370,7 +379,7 @@ static int __init xen_pm_init(void) > > return -ENODEV; > > > > pm_power_off = xen_power_off; > > - arm_pm_restart = xen_restart; > > + register_restart_handler(&xen_restart_nb); > > if (!xen_initial_domain()) { > > struct timespec64 ts; > > xen_read_wallclock(&ts); > > -- > > 2.5.0 > > > > > > _______________________________________________ > > Xen-devel mailing list > > Xen-devel@lists.xen.org > > http://lists.xen.org/xen-devel
On Fri, 8 Apr 2016, Guenter Roeck wrote: > Register with kernel restart handler instead of setting arm_pm_restart > directly. > > Select a high priority of 192 to ensure that default restart handlers > are replaced if Xen is running. > > Signed-off-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> > arch/arm/xen/enlighten.c | 13 +++++++++++-- > 1 file changed, 11 insertions(+), 2 deletions(-) > > diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c > index 75cd7345c654..76a1d12fd27e 100644 > --- a/arch/arm/xen/enlighten.c > +++ b/arch/arm/xen/enlighten.c > @@ -27,6 +27,7 @@ > #include <linux/cpu.h> > #include <linux/console.h> > #include <linux/pvclock_gtod.h> > +#include <linux/reboot.h> > #include <linux/time64.h> > #include <linux/timekeeping.h> > #include <linux/timekeeper_internal.h> > @@ -193,14 +194,22 @@ after_register_vcpu_info: > put_cpu(); > } > > -static void xen_restart(enum reboot_mode reboot_mode, const char *cmd) > +static int xen_restart(struct notifier_block *nb, unsigned long action, > + void *data) > { > struct sched_shutdown r = { .reason = SHUTDOWN_reboot }; > int rc; > rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &r); > BUG_ON(rc); > + > + return NOTIFY_DONE; > } > > +static struct notifier_block xen_restart_nb = { > + .notifier_call = xen_restart, > + .priority = 192, > +}; > + > static void xen_power_off(void) > { > struct sched_shutdown r = { .reason = SHUTDOWN_poweroff }; > @@ -370,7 +379,7 @@ static int __init xen_pm_init(void) > return -ENODEV; > > pm_power_off = xen_power_off; > - arm_pm_restart = xen_restart; > + register_restart_handler(&xen_restart_nb); > if (!xen_initial_domain()) { > struct timespec64 ts; > xen_read_wallclock(&ts); > -- > 2.5.0 >
On Sat, 9 Apr 2016, Stefano Stabellini wrote: > On Fri, 8 Apr 2016, Guenter Roeck wrote: > > Register with kernel restart handler instead of setting arm_pm_restart > > directly. > > > > Select a high priority of 192 to ensure that default restart handlers > > are replaced if Xen is running. > > > > Signed-off-by: Guenter Roeck <linux@roeck-us.net> > > Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> and queued for 4.7 > > > arch/arm/xen/enlighten.c | 13 +++++++++++-- > > 1 file changed, 11 insertions(+), 2 deletions(-) > > > > diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c > > index 75cd7345c654..76a1d12fd27e 100644 > > --- a/arch/arm/xen/enlighten.c > > +++ b/arch/arm/xen/enlighten.c > > @@ -27,6 +27,7 @@ > > #include <linux/cpu.h> > > #include <linux/console.h> > > #include <linux/pvclock_gtod.h> > > +#include <linux/reboot.h> > > #include <linux/time64.h> > > #include <linux/timekeeping.h> > > #include <linux/timekeeper_internal.h> > > @@ -193,14 +194,22 @@ after_register_vcpu_info: > > put_cpu(); > > } > > > > -static void xen_restart(enum reboot_mode reboot_mode, const char *cmd) > > +static int xen_restart(struct notifier_block *nb, unsigned long action, > > + void *data) > > { > > struct sched_shutdown r = { .reason = SHUTDOWN_reboot }; > > int rc; > > rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &r); > > BUG_ON(rc); > > + > > + return NOTIFY_DONE; > > } > > > > +static struct notifier_block xen_restart_nb = { > > + .notifier_call = xen_restart, > > + .priority = 192, > > +}; > > + > > static void xen_power_off(void) > > { > > struct sched_shutdown r = { .reason = SHUTDOWN_poweroff }; > > @@ -370,7 +379,7 @@ static int __init xen_pm_init(void) > > return -ENODEV; > > > > pm_power_off = xen_power_off; > > - arm_pm_restart = xen_restart; > > + register_restart_handler(&xen_restart_nb); > > if (!xen_initial_domain()) { > > struct timespec64 ts; > > xen_read_wallclock(&ts); > > -- > > 2.5.0 > > >
diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c index 75cd7345c654..76a1d12fd27e 100644 --- a/arch/arm/xen/enlighten.c +++ b/arch/arm/xen/enlighten.c @@ -27,6 +27,7 @@ #include <linux/cpu.h> #include <linux/console.h> #include <linux/pvclock_gtod.h> +#include <linux/reboot.h> #include <linux/time64.h> #include <linux/timekeeping.h> #include <linux/timekeeper_internal.h> @@ -193,14 +194,22 @@ after_register_vcpu_info: put_cpu(); } -static void xen_restart(enum reboot_mode reboot_mode, const char *cmd) +static int xen_restart(struct notifier_block *nb, unsigned long action, + void *data) { struct sched_shutdown r = { .reason = SHUTDOWN_reboot }; int rc; rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &r); BUG_ON(rc); + + return NOTIFY_DONE; } +static struct notifier_block xen_restart_nb = { + .notifier_call = xen_restart, + .priority = 192, +}; + static void xen_power_off(void) { struct sched_shutdown r = { .reason = SHUTDOWN_poweroff }; @@ -370,7 +379,7 @@ static int __init xen_pm_init(void) return -ENODEV; pm_power_off = xen_power_off; - arm_pm_restart = xen_restart; + register_restart_handler(&xen_restart_nb); if (!xen_initial_domain()) { struct timespec64 ts; xen_read_wallclock(&ts);
Register with kernel restart handler instead of setting arm_pm_restart directly. Select a high priority of 192 to ensure that default restart handlers are replaced if Xen is running. Signed-off-by: Guenter Roeck <linux@roeck-us.net> --- arch/arm/xen/enlighten.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-)