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authorTobias Klauser <tklauser@distanz.ch>2013-06-28 14:40:28 +0200
committerTobias Klauser <tklauser@distanz.ch>2013-06-28 14:40:28 +0200
commitf2da15da75130a11676d3083b2d70458b6ab38c2 (patch)
treedf2595b559dbdbf63f2d21c754b467576d1f6958 /CodingStyle
parent7199a4fe1d6f66722158d73d4403f8dad8637bd1 (diff)
configure: Improve check for libnl/libnl-genl
Actually call some functions in the check program so they will need to get linked. Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Diffstat (limited to 'CodingStyle')
0 files changed, 0 insertions, 0 deletions
s 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/misc/cxl.h')