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| author | Jarkko Sakkinen <jarkko@kernel.org> | 2020-11-12 23:01:25 +0100 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-11-18 18:02:49 +0100 |
| commit | 9d0c151b41fed7b879030f4e533143d098781701 (patch) | |
| tree | 2a3545a00776ebbd81d2e3f39c61b7eef3576763 /arch/x86/include/uapi | |
| parent | x86/sgx: Add SGX_IOC_ENCLAVE_ADD_PAGES (diff) | |
| download | linux-9d0c151b41fed7b879030f4e533143d098781701.tar.xz linux-9d0c151b41fed7b879030f4e533143d098781701.zip | |
x86/sgx: Add SGX_IOC_ENCLAVE_INIT
Enclaves have two basic states. They are either being built and are
malleable and can be modified by doing things like adding pages. Or,
they are locked down and not accepting changes. They can only be run
after they have been locked down. The ENCLS[EINIT] function induces the
transition from being malleable to locked-down.
Add an ioctl() that performs ENCLS[EINIT]. After this, new pages can
no longer be added with ENCLS[EADD]. This is also the time where the
enclave can be measured to verify its integrity.
Co-developed-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Tested-by: Jethro Beekman <jethro@fortanix.com>
Link: https://lkml.kernel.org/r/20201112220135.165028-15-jarkko@kernel.org
Diffstat (limited to 'arch/x86/include/uapi')
| -rw-r--r-- | arch/x86/include/uapi/asm/sgx.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/x86/include/uapi/asm/sgx.h b/arch/x86/include/uapi/asm/sgx.h index 835f7e588f0d..66f2d32cb4d7 100644 --- a/arch/x86/include/uapi/asm/sgx.h +++ b/arch/x86/include/uapi/asm/sgx.h @@ -23,6 +23,8 @@ enum sgx_page_flags { _IOW(SGX_MAGIC, 0x00, struct sgx_enclave_create) #define SGX_IOC_ENCLAVE_ADD_PAGES \ _IOWR(SGX_MAGIC, 0x01, struct sgx_enclave_add_pages) +#define SGX_IOC_ENCLAVE_INIT \ + _IOW(SGX_MAGIC, 0x02, struct sgx_enclave_init) /** * struct sgx_enclave_create - parameter structure for the @@ -52,4 +54,13 @@ struct sgx_enclave_add_pages { __u64 count; }; +/** + * struct sgx_enclave_init - parameter structure for the + * %SGX_IOC_ENCLAVE_INIT ioctl + * @sigstruct: address for the SIGSTRUCT data + */ +struct sgx_enclave_init { + __u64 sigstruct; +}; + #endif /* _UAPI_ASM_X86_SGX_H */ |