powerpc/pseries/svm: Use shared memory for Debug Trace Log (DTL)

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Secure guests need to share the DTL buffers with the hypervisor. To that
end, use a kmem_cache constructor which converts the underlying buddy
allocated SLUB cache pages into shared memory.

Signed-off-by: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190820021326.6884-10-bauerman@linux.ibm.com

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Anshuman Khandual 2019-08-19 23:13:19 -03:00 • committed by Michael Ellerman

parent bd104e6db6

commit d5394c059d

4 changed files with 50 additions and 1 deletions

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5

arch/powerpc/include/asm/svm.h

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1

arch/powerpc/platforms/pseries/Makefile

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5

arch/powerpc/platforms/pseries/setup.c

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40

arch/powerpc/platforms/pseries/svm.c

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