#ifndef __XFS_MESSAGE_H #define __XFS_MESSAGE_H 1 struct xfs_mount; extern __printf(2, 3) void xfs_emerg(const struct xfs_mount *mp, const char *fmt, ...); extern __printf(2, 3) void xfs_alert(const struct xfs_mount *mp, const char *fmt, ...); extern __printf(3, 4) void xfs_alert_tag(const struct xfs_mount *mp, int tag, const char *fmt, ...); extern __printf(2, 3) void xfs_crit(const struct xfs_mount *mp, const char *fmt, ...); extern __printf(2, 3) void xfs_err(const struct xfs_mount *mp, const char *fmt, ...); extern __printf(2, 3) void xfs_warn(const struct xfs_mount *mp, const char *fmt, ...); extern __printf(2, 3) void xfs_notice(const struct xfs_mount *mp, const char *fmt, ...); extern __printf(2, 3) void xfs_info(const struct xfs_mount *mp, const char *fmt, ...); #ifdef DEBUG extern __printf(2, 3) void xfs_debug(const struct xfs_mount *mp, const char *fmt, ...); #else static inline __printf(2, 3) void xfs_debug(const struct xfs_mount *mp, const char *fmt, ...) { } #endif #define xfs_printk_ratelimited(func, dev, fmt, ...) \ do { \ static DEFINE_RATELIMIT_STATE(_rs, \ DEFAULT_RATELIMIT_INTERVAL, \ DEFAULT_RATELIMIT_BURST); \ if (__ratelimit(&_rs)) \ func(dev, fmt, ##__VA_ARGS__); \ } while (0) #define xfs_emerg_ratelimited(dev, fmt, ...) \ xfs_printk_ratelimited(xfs_emerg, dev, fmt, ##__VA_ARGS__) #define xfs_alert_ratelimited(dev, fmt, ...) \ xfs_printk_ratelimited(xfs_alert, dev, fmt, ##__VA_ARGS__) #define xfs_crit_ratelimited(dev, fmt, ...) \ xfs_printk_ratelimited(xfs_crit, dev, fmt, ##__VA_ARGS__) #define xfs_err_ratelimited(dev, fmt, ...) \ xfs_printk_ratelimited(xfs_err, dev, fmt, ##__VA_ARGS__) #define xfs_warn_ratelimited(dev, fmt, ...) \ xfs_printk_ratelimited(xfs_warn, dev, fmt, ##__VA_ARGS__) #define xfs_notice_ratelimited(dev, fmt, ...) \ xfs_printk_ratelimited(xfs_notice, dev, fmt, ##__VA_ARGS__) #define xfs_info_ratelimited(dev, fmt, ...) \ xfs_printk_ratelimited(xfs_info, dev, fmt, ##__VA_ARGS__) #define xfs_debug_ratelimited(dev, fmt, ...) \ xfs_printk_ratelimited(xfs_debug, dev, fmt, ##__VA_ARGS__) extern void assfail(char *expr, char *f, int l); extern void asswarn(char *expr, char *f, int l); extern void xfs_hex_dump(void *p, int length); #endif /* __XFS_MESSAGE_H */ 46ed9b415c25e92'/>
path: root/net/wireless/trace.h
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authorArd Biesheuvel <ard.biesheuvel@linaro.org>2017-02-01 17:45:02 +0000
committerIngo Molnar <mingo@kernel.org>2017-02-01 21:17:49 +0100
commitc8f325a59cfc718d13a50fbc746ed9b415c25e92 (patch)
treed53fbdac9d0781e39a13b2ac6b2bd258cf3b4140 /net/wireless/trace.h
parentbf29bddf0417a4783da3b24e8c9e017ac649326f (diff)
efi/fdt: Avoid FDT manipulation after ExitBootServices()
Some AArch64 UEFI implementations disable the MMU in ExitBootServices(), after which unaligned accesses to RAM are no longer supported. Commit: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel") fixed an issue in the memory map handling of the stub FDT code, but inadvertently created an issue with such firmware, by moving some of the FDT manipulation to after the invocation of ExitBootServices(). Given that the stub's libfdt implementation uses the ordinary, accelerated string functions, which rely on hardware handling of unaligned accesses, manipulating the FDT with the MMU off may result in alignment faults. So fix the situation by moving the update_fdt_memmap() call into the callback function invoked by efi_exit_boot_services() right before it calls the ExitBootServices() UEFI service (which is arguably a better place for it anyway) Note that disabling the MMU in ExitBootServices() is not compliant with the UEFI spec, and carries great risk due to the fact that switching from cached to uncached memory accesses halfway through compiler generated code (i.e., involving a stack) can never be done in a way that is architecturally safe. Fixes: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel") Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Tested-by: Riku Voipio <riku.voipio@linaro.org> Cc: <stable@vger.kernel.org> Cc: mark.rutland@arm.com Cc: linux-efi@vger.kernel.org Cc: matt@codeblueprint.co.uk Cc: leif.lindholm@linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1485971102-23330-2-git-send-email-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'net/wireless/trace.h')