menuconfig TARGET_CORE tristate "Generic Target Core Mod (TCM) and ConfigFS Infrastructure" depends on SCSI && BLOCK select CONFIGFS_FS select CRC_T10DIF default n help Say Y or M here to enable the TCM Storage Engine and ConfigFS enabled control path for target_core_mod. This includes built-in TCM RAMDISK subsystem logic for virtual LUN 0 access if TARGET_CORE config TCM_IBLOCK tristate "TCM/IBLOCK Subsystem Plugin for Linux/BLOCK" select BLK_DEV_INTEGRITY help Say Y here to enable the TCM/IBLOCK subsystem plugin for non-buffered access to Linux/Block devices using BIO config TCM_FILEIO tristate "TCM/FILEIO Subsystem Plugin for Linux/VFS" help Say Y here to enable the TCM/FILEIO subsystem plugin for buffered access to Linux/VFS struct file or struct block_device config TCM_PSCSI tristate "TCM/pSCSI Subsystem Plugin for Linux/SCSI" help Say Y here to enable the TCM/pSCSI subsystem plugin for non-buffered passthrough access to Linux/SCSI device config TCM_USER2 tristate "TCM/USER Subsystem Plugin for Linux" depends on UIO && NET help Say Y here to enable the TCM/USER subsystem plugin for a userspace process to handle requests. This is version 2 of the ABI; version 1 is obsolete. source "drivers/target/loopback/Kconfig" source "drivers/target/tcm_fc/Kconfig" source "drivers/target/iscsi/Kconfig" source "drivers/target/sbp/Kconfig" endif /> net-next plumbingsTobias Klauser
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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 /include/trace/events/mmc.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 'include/trace/events/mmc.h')