x86/sgx: Add encls_faulted() helper

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Add a helper to extract the fault indicator from an encoded ENCLS return
value.  SGX virtualization will also need to detect ENCLS faults.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Kai Huang <kai.huang@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Jarkko Sakkinen <jarkko@kernel.org>
Acked-by: Dave Hansen <dave.hansen@intel.com>
Link: https://lkml.kernel.org/r/c1f955898110de2f669da536fc6cf62e003dff88.1616136308.git.kai.huang@intel.com

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Sean Christopherson 2021-03-19 20:23:06 +13:00 • committed by Borislav Petkov

parent 32ddda8e44

commit a67136b458

2 changed files with 15 additions and 2 deletions

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15

arch/x86/kernel/cpu/sgx/encls.h

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2

arch/x86/kernel/cpu/sgx/ioctl.c

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