#ifdef CONFIG_BATMAN_ADV_DEBUG
int batadv_debug_log_setup(struct batadv_priv *bat_priv);
void batadv_debug_log_cleanup(struct batadv_priv *bat_priv);
#else
static inline int batadv_debug_log_setup(struct batadv_priv *bat_priv)
{
return 0;
}
static inline void batadv_debug_log_cleanup(struct batadv_priv *bat_priv)
{
}
#endif
/**
* enum batadv_dbg_level - available log levels
* @BATADV_DBG_BATMAN: OGM and TQ computations related messages
* @BATADV_DBG_ROUTES: route added / changed / deleted
* @BATADV_DBG_TT: translation table messages
* @BATADV_DBG_BLA: bridge loop avoidance messages
* @BATADV_DBG_DAT: ARP snooping and DAT related messages
* @BATADV_DBG_NC: network coding related messages
* @BATADV_DBG_MCAST: multicast related messages
* @BATADV_DBG_TP_METER: throughput meter messages
* @BATADV_DBG_ALL: the union of all the above log levels
*/
enum batadv_dbg_level {
BATADV_DBG_BATMAN = BIT(0),
BATADV_DBG_ROUTES = BIT(1),
BATADV_DBG_TT = BIT(2),
BATADV_DBG_BLA = BIT(3),
BATADV_DBG_DAT = BIT(4),
BATADV_DBG_NC = BIT(5),
BATADV_DBG_MCAST = BIT(6),
BATADV_DBG_TP_METER = BIT(7),
BATADV_DBG_ALL = 255,
};
#ifdef CONFIG_BATMAN_ADV_DEBUG
int batadv_debug_log(struct batadv_priv *bat_priv, const char *fmt, ...)
__printf(2, 3);
/* possibly ratelimited debug output */
#define _batadv_dbg(type, bat_priv, ratelimited, fmt, arg...) \
do { \
if (atomic_read(&(bat_priv)->log_level) & (type) && \
(!(ratelimited) || net_ratelimit())) \
batadv_debug_log(bat_priv, fmt, ## arg); \
} \
while (0)
#else /* !CONFIG_BATMAN_ADV_DEBUG */
__printf(4, 5)
static inline void _batadv_dbg(int type __always_unused,
struct batadv_priv *bat_priv __always_unused,
int ratelimited __always_unused,
const char *fmt __always_unused, ...)
{
}
#endif
#define batadv_dbg(type, bat_priv, arg...) \
_batadv_dbg(type, bat_priv, 0, ## arg)
#define batadv_dbg_ratelimited(type, bat_priv, arg...) \
_batadv_dbg(type, bat_priv, 1, ## arg)
#define batadv_info(net_dev, fmt, arg...) \
do { \
struct net_device *_netdev = (net_dev); \
struct batadv_priv *_batpriv = netdev_priv(_netdev); \
batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg); \
pr_info("%s: " fmt, _netdev->name, ## arg); \
} while (0)
#define batadv_err(net_dev, fmt, arg...) \
do { \
struct net_device *_netdev = (net_dev); \
struct batadv_priv *_batpriv = netdev_priv(_netdev); \
batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg); \
pr_err("%s: " fmt, _netdev->name, ## arg); \
} while (0)
#endif /* _NET_BATMAN_ADV_LOG_H_ */
ace/events/fib6.h?h=nds-private-remove&id=fb585b44383c4cff85f92e67377ee1c5f07d6dc1'>fib6.h
x86/efi: Always map the first physical page into the EFI pagetables
Commit:
129766708 ("x86/efi: Only map RAM into EFI page tables if in mixed-mode")
stopped creating 1:1 mappings for all RAM, when running in native 64-bit mode.
It turns out though that there are 64-bit EFI implementations in the wild
(this particular problem has been reported on a Lenovo Yoga 710-11IKB),
which still make use of the first physical page for their own private use,
even though they explicitly mark it EFI_CONVENTIONAL_MEMORY in the memory
map.
In case there is no mapping for this particular frame in the EFI pagetables,
as soon as firmware tries to make use of it, a triple fault occurs and the
system reboots (in case of the Yoga 710-11IKB this is very early during bootup).
Fix that by always mapping the first page of physical memory into the EFI
pagetables. We're free to hand this page to the BIOS, as trim_bios_range()
will reserve the first page and isolate it away from memory allocators anyway.
Note that just reverting 129766708 alone is not enough on v4.9-rc1+ to fix the
regression on affected hardware, as this commit:
ab72a27da ("x86/efi: Consolidate region mapping logic")
later made the first physical frame not to be mapped anyway.
Reported-by: Hanka Pavlikova <hanka@ucw.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Borislav Petkov <bp@suse.de>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vojtech Pavlik <vojtech@ucw.cz>
Cc: Waiman Long <waiman.long@hpe.com>
Cc: linux-efi@vger.kernel.org
Cc: stable@kernel.org # v4.8+
Fixes: 129766708 ("x86/efi: Only map RAM into EFI page tables if in mixed-mode")
Link: http://lkml.kernel.org/r/20170127222552.22336-1-matt@codeblueprint.co.uk
[ Tidied up the changelog and the comment. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>