From: Sean Christopherson sean.j.christopherson@intel.com
mainline inclusion from mainline-v5.13-rc1 commit 8ca52cc38dc8fdcbdbd0c23eafb19db5e5f5c8d0 category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I4SIGI CVE: NA
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Expose SGX architectural structures, as KVM will use many of the architectural constants and structs to virtualize SGX.
Name the new header file as asm/sgx.h, rather than asm/sgx_arch.h, to have single header to provide SGX facilities to share with other kernel componments. Also update MAINTAINERS to include asm/sgx.h.
Intel-SIG: commit 8ca52cc38dc8 x86/sgx: Expose SGX architectural definitions to the kernel Backport for SGX Foundations support
Signed-off-by: Sean Christopherson sean.j.christopherson@intel.com Co-developed-by: Kai Huang kai.huang@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/6bf47acd91ab4d709e66ad1692c7803e4c9063a0.161613630... Signed-off-by: Fan Du fan.du@intel.com #openEuler_contributor Signed-off-by: Laibin Qiu qiulaibin@huawei.com Reviewed-by: Bamvor Zhang bamvor.zhang@suse.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- MAINTAINERS | 1 + .../cpu/sgx/arch.h => include/asm/sgx.h} | 20 ++++++++++++++----- arch/x86/kernel/cpu/sgx/encl.c | 2 +- arch/x86/kernel/cpu/sgx/sgx.h | 2 +- tools/testing/selftests/sgx/defines.h | 2 +- 5 files changed, 19 insertions(+), 8 deletions(-) rename arch/x86/{kernel/cpu/sgx/arch.h => include/asm/sgx.h} (95%)
diff --git a/MAINTAINERS b/MAINTAINERS index 9b5ee13d1373..23a23bd94c00 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -9167,6 +9167,7 @@ Q: https://patchwork.kernel.org/project/intel-sgx/list/ T: git git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-sgx.git F: Documentation/x86/sgx.rst F: arch/x86/entry/vdso/vsgx.S +F: arch/x86/include/asm/sgx.h F: arch/x86/include/uapi/asm/sgx.h F: arch/x86/kernel/cpu/sgx/* F: tools/testing/selftests/sgx/* diff --git a/arch/x86/kernel/cpu/sgx/arch.h b/arch/x86/include/asm/sgx.h similarity index 95% rename from arch/x86/kernel/cpu/sgx/arch.h rename to arch/x86/include/asm/sgx.h index dd7602c44c72..d96e5451d28a 100644 --- a/arch/x86/kernel/cpu/sgx/arch.h +++ b/arch/x86/include/asm/sgx.h @@ -2,15 +2,20 @@ /** * Copyright(c) 2016-20 Intel Corporation. * - * Contains data structures defined by the SGX architecture. Data structures - * defined by the Linux software stack should not be placed here. + * Intel Software Guard Extensions (SGX) support. */ -#ifndef _ASM_X86_SGX_ARCH_H -#define _ASM_X86_SGX_ARCH_H +#ifndef _ASM_X86_SGX_H +#define _ASM_X86_SGX_H
#include <linux/bits.h> #include <linux/types.h>
+/* + * This file contains both data structures defined by SGX architecture and Linux + * defined software data structures and functions. The two should not be mixed + * together for better readibility. The architectural definitions come first. + */ + /* The SGX specific CPUID function. */ #define SGX_CPUID 0x12 /* EPC enumeration. */ @@ -335,4 +340,9 @@ struct sgx_sigstruct {
#define SGX_LAUNCH_TOKEN_SIZE 304
-#endif /* _ASM_X86_SGX_ARCH_H */ +/* + * Do not put any hardware-defined SGX structure representations below this + * comment! + */ + +#endif /* _ASM_X86_SGX_H */ diff --git a/arch/x86/kernel/cpu/sgx/encl.c b/arch/x86/kernel/cpu/sgx/encl.c index 7449ef33f081..97fb7efce224 100644 --- a/arch/x86/kernel/cpu/sgx/encl.c +++ b/arch/x86/kernel/cpu/sgx/encl.c @@ -7,7 +7,7 @@ #include <linux/shmem_fs.h> #include <linux/suspend.h> #include <linux/sched/mm.h> -#include "arch.h" +#include <asm/sgx.h> #include "encl.h" #include "encls.h" #include "sgx.h" diff --git a/arch/x86/kernel/cpu/sgx/sgx.h b/arch/x86/kernel/cpu/sgx/sgx.h index 653af8ca1a25..2a2b5c857451 100644 --- a/arch/x86/kernel/cpu/sgx/sgx.h +++ b/arch/x86/kernel/cpu/sgx/sgx.h @@ -8,7 +8,7 @@ #include <linux/rwsem.h> #include <linux/types.h> #include <asm/asm.h> -#include "arch.h" +#include <asm/sgx.h>
#undef pr_fmt #define pr_fmt(fmt) "sgx: " fmt diff --git a/tools/testing/selftests/sgx/defines.h b/tools/testing/selftests/sgx/defines.h index 592c1ccf4576..0bd73428d2f3 100644 --- a/tools/testing/selftests/sgx/defines.h +++ b/tools/testing/selftests/sgx/defines.h @@ -14,7 +14,7 @@ #define __aligned(x) __attribute__((__aligned__(x))) #define __packed __attribute__((packed))
-#include "../../../../arch/x86/kernel/cpu/sgx/arch.h" +#include "../../../../arch/x86/include/asm/sgx.h" #include "../../../../arch/x86/include/asm/enclu.h" #include "../../../../arch/x86/include/uapi/asm/sgx.h"