Linux-Sgx Archive on lore.kernel.org
 help / color / Atom feed
From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: linux-kernel@vger.kernel.org, x86@kernel.org, linux-sgx@vger.kernel.org
Cc: akpm@linux-foundation.org, dave.hansen@intel.com,
	sean.j.christopherson@intel.com, nhorman@redhat.com,
	npmccallum@redhat.com, serge.ayoun@intel.com,
	shay.katz-zamir@intel.com, haitao.huang@intel.com,
	andriy.shevchenko@linux.intel.com, tglx@linutronix.de,
	kai.svahn@intel.com, bp@alien8.de, josh@joshtriplett.org,
	luto@kernel.org, kai.huang@intel.com, rientjes@google.com,
	Andy Lutomirski <luto@amacapital.net>,
	Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Haitao Huang <haitao.huang@linux.intel.com>,
	Jethro Beekman <jethro@fortanix.com>,
	"Dr . Greg Wettstein" <greg@enjellic.com>
Subject: [PATCH v20 23/28] x86/vdso: Add __vdso_sgx_enter_enclave() to wrap SGX enclave transitions
Date: Wed, 17 Apr 2019 13:39:33 +0300
Message-ID: <20190417103938.7762-24-jarkko.sakkinen@linux.intel.com> (raw)
In-Reply-To: <20190417103938.7762-1-jarkko.sakkinen@linux.intel.com>

From: Sean Christopherson <sean.j.christopherson@intel.com>

Intel Software Guard Extensions (SGX) introduces a new CPL3-only enclave
mode that runs as a sort of black box shared object that is hosted by an
untrusted normal CPL3 process.

Skipping over a great deal of gory architecture details[1], SGX was
designed in such a way that the host process can utilize a library to
build, launch and run an enclave.  This is roughly analogous to how
e.g. libc implementations are used by most applications so that the
application can focus on its business logic.

The big gotcha is that because enclaves can generate *and* handle
exceptions, any SGX library must be prepared to handle nearly any
exception at any time (well, any time a thread is executing in an
enclave).  In Linux, this means the SGX library must register a
signal handler in order to intercept relevant exceptions and forward
them to the enclave (or in some cases, take action on behalf of the
enclave).  Unfortunately, Linux's signal mechanism doesn't mesh well
with libraries, e.g. signal handlers are process wide, are difficult
to chain, etc...  This becomes particularly nasty when using multiple
levels of libraries that register signal handlers, e.g. running an
enclave via cgo inside of the Go runtime.

In comes vDSO to save the day.  Now that vDSO can fixup exceptions,
add a function, __vdso_sgx_enter_enclave(), to wrap enclave transitions
and intercept any exceptions that occur when running the enclave.

__vdso_sgx_enter_enclave() does NOT adhere to the x86-64 ABI and instead
uses a custom calling convention.  The primary motivation is to avoid
issues that arise due to asynchronous enclave exits.  The x86-64 ABI
requires that EFLAGS.DF, MXCSR and FCW be preserved by the callee, and
unfortunately for the vDSO, the aformentioned registers/bits are not
restored after an asynchronous exit, e.g. EFLAGS.DF is in an unknown
state while MXCSR and FCW are reset to their init values.  So the vDSO
cannot simply pass the buck by requiring enclaves to adhere to the
x86-64 ABI.  That leaves three somewhat reasonable options:

  1) Save/restore non-volatile GPRs, MXCSR and FCW, and clear EFLAGS.DF

     + 100% compliant with the x86-64 ABI
     + Callable from any code
     + Minimal documentation required
     - Restoring MXCSR/FCW is likely unnecessary 99% of the time
     - Slow

  2) Save/restore non-volatile GPRs and clear EFLAGS.DF

     + Mostly compliant with the x86-64 ABI
     + Callable from any code that doesn't use SIMD registers
     - Need to document deviations from x86-64 ABI, i.e. MXCSR and FCW

  3) Require the caller to save/restore everything.

     + Fast
     + Userspace can pass all GPRs to the enclave (minus EAX, RBX and RCX)
     - Custom ABI
     - For all intents and purposes must be called from an assembly wrapper

__vdso_sgx_enter_enclave() implements option (3).  The custom ABI is
mostly a documentation issue, and even that is offset by the fact that
being more similar to hardware's ENCLU[EENTER/ERESUME] ABI reduces the
amount of documentation needed for the vDSO, e.g. options (2) and (3)
would need to document which registers are marshalled to/from enclaves.
Requiring an assembly wrapper imparts minimal pain on userspace as SGX
libraries and/or applications need a healthy chunk of assembly, e.g. in
the enclave, regardless of the vDSO's implementation.

Note, the C-like pseudocode describing the assembly routine is wrapped
in a non-existent macro instead of in a comment to trick kernel-doc into
auto-parsing the documentation and function prototype.  This is a double
win as the pseudocode is intended to aid kernel developers, not userland
enclave developers.

[1] Documentation/x86/sgx/1.Architecture.rst

Suggested-by: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Haitao Huang <haitao.huang@linux.intel.com>
Cc: Jethro Beekman <jethro@fortanix.com>
Cc: Dr. Greg Wettstein <greg@enjellic.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
---
 arch/x86/entry/vdso/Makefile             |   2 +
 arch/x86/entry/vdso/vdso.lds.S           |   1 +
 arch/x86/entry/vdso/vsgx_enter_enclave.S | 101 +++++++++++++++++++++++
 arch/x86/include/uapi/asm/sgx.h          |  18 ++++
 4 files changed, 122 insertions(+)
 create mode 100644 arch/x86/entry/vdso/vsgx_enter_enclave.S

diff --git a/arch/x86/entry/vdso/Makefile b/arch/x86/entry/vdso/Makefile
index 34bcf87d358c..fb5b9960b192 100644
--- a/arch/x86/entry/vdso/Makefile
+++ b/arch/x86/entry/vdso/Makefile
@@ -18,6 +18,7 @@ VDSO32-$(CONFIG_IA32_EMULATION)	:= y
 
 # files to link into the vdso
 vobjs-y := vdso-note.o vclock_gettime.o vgetcpu.o
+vobjs-$(VDSO64-y)		+= vsgx_enter_enclave.o
 
 # files to link into kernel
 obj-y				+= vma.o extable.o
@@ -85,6 +86,7 @@ CFLAGS_REMOVE_vdso-note.o = -pg
 CFLAGS_REMOVE_vclock_gettime.o = -pg
 CFLAGS_REMOVE_vgetcpu.o = -pg
 CFLAGS_REMOVE_vvar.o = -pg
+CFLAGS_REMOVE_vsgx_enter_enclave.o = -pg
 
 #
 # X32 processes use x32 vDSO to access 64bit kernel data.
diff --git a/arch/x86/entry/vdso/vdso.lds.S b/arch/x86/entry/vdso/vdso.lds.S
index d3a2dce4cfa9..50952a995a6c 100644
--- a/arch/x86/entry/vdso/vdso.lds.S
+++ b/arch/x86/entry/vdso/vdso.lds.S
@@ -25,6 +25,7 @@ VERSION {
 		__vdso_getcpu;
 		time;
 		__vdso_time;
+		__vdso_sgx_enter_enclave;
 	local: *;
 	};
 }
diff --git a/arch/x86/entry/vdso/vsgx_enter_enclave.S b/arch/x86/entry/vdso/vsgx_enter_enclave.S
new file mode 100644
index 000000000000..fe0bf6671d6d
--- /dev/null
+++ b/arch/x86/entry/vdso/vsgx_enter_enclave.S
@@ -0,0 +1,101 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#include <linux/linkage.h>
+#include <asm/export.h>
+#include <asm/errno.h>
+
+#include "extable.h"
+
+#define EX_LEAF		0*8
+#define EX_TRAPNR	0*8+4
+#define EX_ERROR_CODE	0*8+6
+#define EX_ADDRESS	1*8
+
+.code64
+.section .text, "ax"
+
+#ifdef SGX_KERNEL_DOC
+/**
+ * __vdso_sgx_enter_enclave() - Enter an SGX enclave
+ *
+ * @leaf:	**IN \%eax** - ENCLU leaf, must be EENTER or ERESUME
+ * @tcs:	**IN \%rbx** - TCS, must be non-NULL
+ * @ex_info:	**IN \%rcx** - Optional 'struct sgx_enclave_exception' pointer
+ *
+ * Return:
+ *  **OUT \%eax** -
+ *  %0 on a clean entry/exit to/from the enclave, %-EINVAL if ENCLU leaf is
+ *  not allowed or if TCS is NULL, %-EFAULT if ENCLU or the enclave faults
+ *
+ * **Important!**  __vdso_sgx_enter_enclave() is **NOT** compliant with the
+ * x86-64 ABI, i.e. cannot be called from standard C code.   As noted above,
+ * input parameters must be passed via ``%eax``, ``%rbx`` and ``%rcx``, with
+ * the return value passed via ``%eax``.  All registers except ``%rsp`` must
+ * be treated as volatile from the caller's perspective, including but not
+ * limited to GPRs, EFLAGS.DF, MXCSR, FCW, etc...  Conversely, the enclave
+ * being run **must** preserve the untrusted ``%rsp`` and stack.
+ */
+__vdso_sgx_enter_enclave(u32 leaf, void *tcs,
+			 struct sgx_enclave_exception *ex_info)
+{
+	if (leaf != SGX_EENTER && leaf != SGX_ERESUME)
+		return -EINVAL;
+
+	if (!tcs)
+		return -EINVAL;
+
+	try {
+		ENCLU[leaf];
+	} catch (exception) {
+		if (e)
+			*e = exception;
+		return -EFAULT;
+	}
+
+	return 0;
+}
+#endif
+ENTRY(__vdso_sgx_enter_enclave)
+	/* EENTER <= leaf <= ERESUME */
+	cmp	$0x2, %eax
+	jb	bad_input
+
+	cmp	$0x3, %eax
+	ja	bad_input
+
+	/* TCS must be non-NULL */
+	test	%rbx, %rbx
+	je	bad_input
+
+	/* Save @exception_info */
+	push	%rcx
+
+	/* Load AEP for ENCLU */
+	lea	1f(%rip),  %rcx
+1:	enclu
+
+	add	$0x8, %rsp
+	xor	%eax, %eax
+	ret
+
+bad_input:
+	mov     $(-EINVAL), %rax
+	ret
+
+.pushsection .fixup, "ax"
+	/* Re-load @exception_info and fill it (if it's non-NULL) */
+2:	pop	%rcx
+	test    %rcx, %rcx
+	je      3f
+
+	mov	%eax, EX_LEAF(%rcx)
+	mov	%di,  EX_TRAPNR(%rcx)
+	mov	%si,  EX_ERROR_CODE(%rcx)
+	mov	%rdx, EX_ADDRESS(%rcx)
+3:	mov	$(-EFAULT), %rax
+	ret
+.popsection
+
+_ASM_VDSO_EXTABLE_HANDLE(1b, 2b)
+
+ENDPROC(__vdso_sgx_enter_enclave)
diff --git a/arch/x86/include/uapi/asm/sgx.h b/arch/x86/include/uapi/asm/sgx.h
index 3b80acde8671..9ed690a38c70 100644
--- a/arch/x86/include/uapi/asm/sgx.h
+++ b/arch/x86/include/uapi/asm/sgx.h
@@ -65,4 +65,22 @@ struct sgx_enclave_set_attribute {
 	__u64	attribute_fd;
 };
 
+/**
+ * struct sgx_enclave_exception - structure to report exceptions encountered in
+ *				  __vdso_sgx_enter_enclave()
+ *
+ * @leaf:	ENCLU leaf from \%eax at time of exception
+ * @trapnr:	exception trap number, a.k.a. fault vector
+ * @error_code:	exception error code
+ * @address:	exception address, e.g. CR2 on a #PF
+ * @reserved:	reserved for future use
+ */
+struct sgx_enclave_exception {
+	__u32 leaf;
+	__u16 trapnr;
+	__u16 error_code;
+	__u64 address;
+	__u64 reserved[2];
+};
+
 #endif /* _UAPI_ASM_X86_SGX_H */
-- 
2.19.1


  parent reply index

Thread overview: 318+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-17 10:39 [PATCH v20 00/28] Intel SGX1 support Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 01/28] x86/cpufeatures: Add Intel-defined SGX feature bit Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 02/28] x86/cpufeatures: Add SGX sub-features (as Linux-defined bits) Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 03/28] x86/msr: Add IA32_FEATURE_CONTROL.SGX_ENABLE definition Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 04/28] x86/cpufeatures: Add Intel-defined SGX_LC feature bit Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 05/28] x86/msr: Add SGX Launch Control MSR definitions Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 06/28] x86/mm: x86/sgx: Add new 'PF_SGX' page fault error code bit Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 07/28] x86/mm: x86/sgx: Signal SIGSEGV for userspace #PFs w/ PF_SGX Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 08/28] x86/cpu/intel: Detect SGX support and update caps appropriately Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 09/28] x86/sgx: Add ENCLS architectural error codes Jarkko Sakkinen
2019-04-22 21:35   ` Sean Christopherson
2019-04-17 10:39 ` [PATCH v20 10/28] x86/sgx: Add SGX1 and SGX2 architectural data structures Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 11/28] x86/sgx: Add wrappers for ENCLS leaf functions Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 12/28] x86/sgx: Enumerate and track EPC sections Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 13/28] x86/sgx: Add functions to allocate and free EPC pages Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 14/28] x86/sgx: Add sgx_einit() for initializing enclaves Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 15/28] x86/sgx: Add the Linux SGX Enclave Driver Jarkko Sakkinen
2019-04-22 21:58   ` Sean Christopherson
2019-04-23 23:29     ` Jethro Beekman
2019-04-24  0:26       ` Sean Christopherson
2019-04-24  1:04         ` Jethro Beekman
2019-04-29 19:08           ` Sean Christopherson
2019-06-04 20:12         ` Sean Christopherson
2019-06-05 14:29           ` Jarkko Sakkinen
2019-06-05 14:52             ` Sean Christopherson
2019-06-05 21:25               ` Dr. Greg
2019-06-05 22:20                 ` Sean Christopherson
2019-06-06 15:32               ` Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 16/28] x86/sgx: Add provisioning Jarkko Sakkinen
2019-04-19  3:06   ` Huang, Kai
2019-04-23 14:33     ` Jarkko Sakkinen
2019-04-24  1:34   ` Jethro Beekman
2019-05-02  8:27     ` Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 17/28] x86/sgx: Add swapping code to the core and SGX driver Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 18/28] x86/sgx: ptrace() support for the " Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 19/28] x86/vdso: Add support for exception fixup in vDSO functions Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 20/28] x86/fault: Add helper function to sanitize error code Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 21/28] x86/fault: Attempt to fixup unhandled #PF in vDSO before signaling Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 22/28] x86/traps: Attempt to fixup exceptions " Jarkko Sakkinen
2019-06-25 15:43   ` Jarkko Sakkinen
2019-06-27 20:32     ` Xing, Cedric
2019-07-11 15:54       ` Sean Christopherson
2019-07-11 22:12         ` Xing, Cedric
2019-07-11 15:56     ` Sean Christopherson
2019-07-11 17:52       ` Jarkko Sakkinen
2019-04-17 10:39 ` Jarkko Sakkinen [this message]
2019-04-17 10:39 ` [PATCH v20 24/28] selftests/x86: Add a selftest for SGX Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 25/28] x86/sgx: Update MAINTAINERS Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 26/28] docs: x86/sgx: Add Architecture documentation Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 27/28] docs: x86/sgx: Document kernel internals Jarkko Sakkinen
2019-04-17 10:39 ` [PATCH v20 28/28] docs: x86/sgx: Document the enclave API Jarkko Sakkinen
2019-04-18 17:10 ` [PATCH v20 00/28] Intel SGX1 support Dr. Greg
2019-04-18 17:24   ` Dave Hansen
2019-04-19 16:24     ` Dr. Greg
2019-04-19 16:39       ` Dave Hansen
2019-04-18 18:01   ` Dave Hansen
2019-04-19 14:17     ` Dr. Greg
2019-04-19 14:25       ` Dave Hansen
2019-04-19 15:27       ` Andy Lutomirski
2019-04-19 19:38         ` Jethro Beekman
2019-04-19 20:39           ` Thomas Gleixner
2019-04-19 20:46             ` Jethro Beekman
2019-04-19 20:50               ` Thomas Gleixner
2019-04-19 20:54                 ` Jethro Beekman
2019-04-19 21:15                   ` Andy Lutomirski
2019-04-19 21:19                     ` Jethro Beekman
2019-04-19 21:31                       ` Andy Lutomirski
2019-04-19 21:35                         ` Jethro Beekman
2019-04-19 21:38                           ` Thomas Gleixner
2019-04-19 21:56                             ` Jethro Beekman
2019-04-20  5:42                               ` Thomas Gleixner
2019-04-20 16:02                                 ` Dr. Greg
2019-04-22 15:01                                   ` Sean Christopherson
2019-04-22 16:24                                     ` Dr. Greg
2019-04-22 16:48                                       ` Sean Christopherson
2019-04-22 16:55                                         ` Linus Torvalds
2019-04-22 17:17                                           ` Sean Christopherson
2019-04-23  9:11                                             ` Dr. Greg
2019-04-22 16:26                               ` Andy Lutomirski
2019-04-23 21:15                                 ` Jethro Beekman
2019-05-10 17:23                                 ` Xing, Cedric
2019-05-10 17:37                                   ` Jethro Beekman
2019-05-10 17:54                                     ` Dave Hansen
2019-05-10 18:04                                       ` Jethro Beekman
2019-05-10 18:56                                         ` Xing, Cedric
2019-05-10 19:04                                           ` Jethro Beekman
2019-05-10 19:22                                             ` Andy Lutomirski
2019-05-11  1:06                                               ` Xing, Cedric
2019-05-14 15:08                                                 ` Andy Lutomirski
2019-05-15  8:31                                                   ` Jarkko Sakkinen
     [not found]                                               ` <20190513102926.GD8743@linux.intel.com>
2019-05-14 10:43                                                 ` Jarkko Sakkinen
2019-05-14 15:13                                                   ` Andy Lutomirski
2019-05-14 20:45                                                     ` Sean Christopherson
2019-05-14 21:27                                                       ` Andy Lutomirski
2019-05-14 22:28                                                         ` Xing, Cedric
2019-05-15  1:30                                                         ` Sean Christopherson
2019-05-15 18:27                                                           ` SGX vs LSM (Re: [PATCH v20 00/28] Intel SGX1 support) Andy Lutomirski
2019-05-15 19:58                                                             ` James Morris
2019-05-15 20:35                                                               ` Andy Lutomirski
2019-05-15 22:46                                                                 ` James Morris
2019-05-15 23:13                                                                   ` Andy Lutomirski
2019-05-16  3:03                                                                     ` Xing, Cedric
2019-05-16  4:40                                                                       ` Andy Lutomirski
2019-05-16 22:23                                                                         ` Xing, Cedric
2019-05-17  0:35                                                                           ` Andy Lutomirski
2019-05-17  1:06                                                                             ` Xing, Cedric
2019-05-17  1:21                                                                               ` Andy Lutomirski
2019-05-17 16:05                                                                             ` Sean Christopherson
2019-05-17 13:53                                                                           ` Stephen Smalley
2019-05-17 15:09                                                                             ` Sean Christopherson
2019-05-17 16:20                                                                               ` Stephen Smalley
2019-05-17 16:24                                                                                 ` Andy Lutomirski
2019-05-17 16:37                                                                                 ` Stephen Smalley
2019-05-17 17:12                                                                                   ` Andy Lutomirski
2019-05-17 18:05                                                                                     ` Stephen Smalley
2019-05-17 19:20                                                                                       ` Stephen Smalley
2019-05-17 19:28                                                                                       ` Sean Christopherson
2019-05-17 20:09                                                                                         ` Stephen Smalley
2019-05-17 20:14                                                                                           ` Andy Lutomirski
2019-05-17 20:34                                                                                             ` Stephen Smalley
2019-05-17 21:36                                                                                           ` Sean Christopherson
2019-05-17 17:29                                                                                   ` Sean Christopherson
2019-05-17 17:42                                                                                     ` Stephen Smalley
2019-05-17 17:50                                                                                       ` Sean Christopherson
2019-05-17 18:16                                                                                         ` Stephen Smalley
2019-05-17 17:43                                                                                     ` Andy Lutomirski
2019-05-17 17:55                                                                                       ` Sean Christopherson
2019-05-17 18:04                                                                                         ` Linus Torvalds
2019-05-17 18:21                                                                                           ` Sean Christopherson
2019-05-17 18:33                                                                                             ` Linus Torvalds
2019-05-17 18:52                                                                                               ` Sean Christopherson
2019-05-17 18:53                                                                                             ` Andy Lutomirski
2019-05-16  7:24                                                                     ` James Morris
2019-05-16 21:00                                                                       ` Andy Lutomirski
2019-05-20  9:38                                                                       ` Dr. Greg
2019-05-15 21:38                                                             ` Sean Christopherson
2019-05-16  1:19                                                               ` Haitao Huang
2019-05-16  5:16                                                             ` Jarkko Sakkinen
2019-05-16 21:02                                                               ` Andy Lutomirski
2019-05-16 22:45                                                                 ` Sean Christopherson
2019-05-16 23:29                                                                   ` Xing, Cedric
2019-05-20 11:29                                                                   ` Jarkko Sakkinen
2019-05-20 11:33                                                                 ` Jarkko Sakkinen
2019-05-17  0:03                                                             ` Sean Christopherson
2019-05-17  0:26                                                               ` Andy Lutomirski
2019-05-17 15:41                                                                 ` Sean Christopherson
2019-05-20 11:42                                                                   ` Jarkko Sakkinen
2019-05-20 11:41                                                                 ` Jarkko Sakkinen
2019-05-21 15:19                                                                   ` Jarkko Sakkinen
2019-05-21 15:24                                                                     ` Jethro Beekman
2019-05-22 13:10                                                                       ` Jarkko Sakkinen
2019-05-21 15:51                                                                     ` Sean Christopherson
2019-05-22 13:20                                                                       ` Jarkko Sakkinen
2019-05-22 13:22                                                                         ` Jarkko Sakkinen
2019-05-22 13:56                                                                           ` Stephen Smalley
2019-05-22 15:38                                                                             ` Sean Christopherson
2019-05-22 22:42                                                                               ` Andy Lutomirski
2019-05-23  2:35                                                                                 ` Sean Christopherson
2019-05-23 10:26                                                                                   ` Jarkko Sakkinen
2019-05-23 14:17                                                                                     ` Sean Christopherson
2019-05-23 15:38                                                                                       ` Andy Lutomirski
2019-05-23 23:40                                                                                         ` Sean Christopherson
2019-05-24  1:17                                                                                           ` Andy Lutomirski
2019-05-24  7:24                                                                                             ` Xing, Cedric
2019-05-24 15:41                                                                                               ` Stephen Smalley
2019-05-24 16:57                                                                                                 ` Xing, Cedric
2019-05-24 17:42                                                                                                 ` Sean Christopherson
2019-05-24 17:54                                                                                                   ` Andy Lutomirski
2019-05-24 17:56                                                                                                     ` Sean Christopherson
2019-05-24 17:54                                                                                                   ` Sean Christopherson
2019-05-24 18:34                                                                                                     ` Xing, Cedric
2019-05-24 19:13                                                                                                       ` Sean Christopherson
2019-05-24 19:30                                                                                                         ` Andy Lutomirski
2019-05-24 20:42                                                                                                         ` Xing, Cedric
2019-05-24 21:11                                                                                                           ` Sean Christopherson
2019-05-24 19:37                                                                                                       ` Andy Lutomirski
2019-05-24 20:03                                                                                                         ` Sean Christopherson
2019-05-24 20:58                                                                                                           ` Xing, Cedric
2019-05-24 21:27                                                                                                           ` Andy Lutomirski
2019-05-24 22:41                                                                                                             ` Sean Christopherson
2019-05-24 23:42                                                                                                               ` Andy Lutomirski
2019-05-25 22:40                                                                                                                 ` Xing, Cedric
2019-05-26  0:57                                                                                                                   ` Andy Lutomirski
2019-05-26  6:09                                                                                                                     ` Xing, Cedric
2019-05-28 20:24                                                                                                                       ` Sean Christopherson
2019-05-28 20:48                                                                                                                         ` Andy Lutomirski
2019-05-28 21:41                                                                                                                           ` Sean Christopherson
2019-05-30  5:38                                                                                                                             ` Xing, Cedric
2019-05-30 17:21                                                                                                                               ` Sean Christopherson
2019-05-29 14:08                                                                                                                         ` Stephen Smalley
2019-05-30  6:12                                                                                                                           ` Xing, Cedric
2019-05-30 14:22                                                                                                                             ` Stephen Smalley
2019-05-30 14:31                                                                                                                               ` Andy Lutomirski
2019-05-30 15:04                                                                                                                                 ` Stephen Smalley
2019-05-30 16:14                                                                                                                                   ` Andy Lutomirski
2019-05-30 18:01                                                                                                                                     ` Sean Christopherson
2019-05-30 19:20                                                                                                                                       ` Andy Lutomirski
2019-05-30 21:16                                                                                                                                         ` Sean Christopherson
2019-05-30 21:23                                                                                                                                           ` Andy Lutomirski
2019-05-30 21:36                                                                                                                                             ` Sean Christopherson
2019-06-03  9:12                                                                                                                                               ` Dr. Greg
2019-06-03 21:08                                                                                                                                               ` Jarkko Sakkinen
2019-05-30 21:48                                                                                                                                         ` Xing, Cedric
2019-05-30 22:24                                                                                                                                           ` Sean Christopherson
2019-06-03 21:05                                                                                                                                       ` Jarkko Sakkinen
2019-06-03 20:54                                                                                                                                     ` Jarkko Sakkinen
2019-06-03 21:23                                                                                                                                       ` Sean Christopherson
2019-06-04 11:39                                                                                                                                         ` Jarkko Sakkinen
2019-06-03 21:37                                                                                                                                       ` Andy Lutomirski
2019-06-03 20:47                                                                                                                                   ` Jarkko Sakkinen
2019-06-03 20:43                                                                                                                                 ` Jarkko Sakkinen
2019-05-25 17:31                                                                                                           ` Dr. Greg
2019-05-24 16:43                                                                                               ` Andy Lutomirski
2019-05-24 17:07                                                                                                 ` Sean Christopherson
2019-05-24 17:51                                                                                                   ` Andy Lutomirski
2019-05-24 14:44                                                                                         ` Stephen Smalley
2019-05-27 13:48                                                                                         ` Jarkko Sakkinen
2019-05-23 19:58                                                                                       ` Sean Christopherson
2019-05-27 13:34                                                                                       ` Jarkko Sakkinen
2019-05-27 13:38                                                                                         ` Jarkko Sakkinen
2019-05-23  8:10                                                                                 ` Jarkko Sakkinen
2019-05-23  8:23                                                                                   ` Jarkko Sakkinen
2019-05-20 11:36                                                               ` Jarkko Sakkinen
2019-05-15 10:35                                                       ` [PATCH v20 00/28] Intel SGX1 support Jarkko Sakkinen
2019-05-15 11:00                                                         ` Jarkko Sakkinen
2019-05-15 14:27                                                           ` Andy Lutomirski
2019-05-16  5:07                                                             ` Jarkko Sakkinen
2019-05-16  6:51                                                               ` Jarkko Sakkinen
2019-05-16  7:02                                                                 ` Jarkko Sakkinen
2019-05-15 13:21                                                         ` Sean Christopherson
2019-05-16  5:01                                                           ` Jarkko Sakkinen
2019-05-15  8:49                                                     ` Jarkko Sakkinen
2019-05-15  9:58                                                       ` Jarkko Sakkinen
2019-05-14 14:33                                               ` Haitao Huang
2019-05-14 15:17                                                 ` Andy Lutomirski
2019-05-14 15:30                                                   ` Haitao Huang
2019-05-14 20:45                                                     ` Andy Lutomirski
2019-05-14 21:08                                                       ` Haitao Huang
2019-05-14 21:58                                                       ` Xing, Cedric
2019-05-15  5:15                                                         ` Haitao Huang
2019-05-10 18:44                                       ` Xing, Cedric
2019-04-19 21:34                       ` Thomas Gleixner
2019-04-19 21:05               ` Jethro Beekman
2019-04-18 18:07   ` Andy Lutomirski
2019-04-22 20:42 ` [RFC PATCH v1 0/3] An alternative __vdso_sgx_enter_enclave() to allow enclave/host parameter passing using untrusted stack Cedric Xing
2019-04-22 22:05   ` Sean Christopherson
2019-04-23  0:37   ` Cedric Xing
2019-04-24  6:26   ` [RFC PATCH v2 " Cedric Xing
2019-07-10 11:17     ` Jarkko Sakkinen
2019-07-10 18:08       ` Xing, Cedric
2019-07-10 22:46         ` Jarkko Sakkinen
2019-07-10 22:54           ` Xing, Cedric
2019-07-11  9:36             ` Jarkko Sakkinen
2019-07-11 19:49               ` Xing, Cedric
2019-07-10 23:15           ` Jarkko Sakkinen
2019-07-10 23:37             ` Xing, Cedric
2019-07-11  9:38               ` Jarkko Sakkinen
2019-07-11 15:50                 ` Sean Christopherson
2019-07-11 17:59                   ` Jarkko Sakkinen
2019-07-11 19:51                 ` Xing, Cedric
2019-07-11  4:21     ` [RFC PATCH v3 0/3] x86/sgx: Amend vDSO API to allow enclave/host parameter passing on " Cedric Xing
2019-07-12  3:28       ` Jarkko Sakkinen
2019-07-13  6:51       ` [RFC PATCH v4 " Cedric Xing
2019-07-13  6:51       ` [RFC PATCH v4 1/3] selftests/x86/sgx: Fix Makefile for SGX selftest Cedric Xing
2019-07-13 15:10         ` Jarkko Sakkinen
2019-07-13 15:15           ` Jarkko Sakkinen
2019-07-13 17:29             ` Xing, Cedric
2019-07-14 14:53               ` Jarkko Sakkinen
2019-07-13  6:51       ` [RFC PATCH v4 2/3] x86/vdso: Modify __vdso_sgx_enter_enclave() to allow parameter passing on untrusted stack Cedric Xing
2019-07-13 15:04         ` Jarkko Sakkinen
2019-07-13 15:06           ` Jarkko Sakkinen
2019-07-13  6:51       ` [RFC PATCH v4 3/3] selftests/x86/sgx: Augment SGX selftest to test vDSO API Cedric Xing
2019-07-13 15:21         ` Jarkko Sakkinen
2019-07-13 17:20           ` Xing, Cedric
2019-07-14 14:40             ` Jarkko Sakkinen
2019-07-14 14:47             ` Jarkko Sakkinen
2019-07-17 21:57               ` Xing, Cedric
2019-07-11  4:21     ` [RFC PATCH v3 1/3] selftests/x86: Fixed Makefile for SGX selftest Cedric Xing
2019-07-11  4:21     ` [RFC PATCH v3 2/3] x86/vdso: Modify __vdso_sgx_enter_enclave() to allow parameter passing on untrusted stack Cedric Xing
2019-07-11  9:50       ` Jarkko Sakkinen
2019-07-11  9:53       ` Jarkko Sakkinen
2019-07-11 15:42         ` Sean Christopherson
2019-07-11 17:55           ` Jarkko Sakkinen
2019-07-11 17:58             ` Sean Christopherson
2019-07-12  3:16               ` Jarkko Sakkinen
2019-07-13  7:00                 ` Xing, Cedric
2019-07-11  4:21     ` [RFC PATCH v3 3/3] selftests/x86: Augment SGX selftest to test new __vdso_sgx_enter_enclave() and its callback interface Cedric Xing
2019-04-24  6:26   ` [RFC PATCH v2 1/3] selftests/x86: Fixed Makefile for SGX selftest Cedric Xing
2019-07-12  3:19     ` Jarkko Sakkinen
2019-07-13  6:58       ` Xing, Cedric
2019-04-24  6:26   ` [RFC PATCH v2 2/3] x86/vdso: Modify __vdso_sgx_enter_enclave() to allow parameter passing on untrusted stack Cedric Xing
2019-04-24 19:04     ` Sean Christopherson
2019-04-25 23:31       ` Xing, Cedric
2019-04-26 21:00         ` Sean Christopherson
2019-05-02  8:28           ` Jarkko Sakkinen
2019-04-24  6:26   ` [RFC PATCH v2 3/3] selftests/x86: Augment SGX selftest to test new __vdso_sgx_enter_enclave() and its callback interface Cedric Xing
2019-07-12  3:25     ` Jarkko Sakkinen
2019-07-13  7:03       ` Xing, Cedric
2019-04-22 20:42 ` [RFC PATCH v1 1/3] selftests/x86: Fixed Makefile for SGX selftest Cedric Xing
2019-04-23  0:37   ` Cedric Xing
2019-04-22 20:42 ` [RFC PATCH v1 2/3] x86/vdso: Modify __vdso_sgx_enter_enclave() to allow parameter passing on untrusted stack Cedric Xing
2019-04-22 22:26   ` Sean Christopherson
2019-04-23  0:37   ` Cedric Xing
2019-04-23  1:25   ` Andy Lutomirski
2019-04-24 17:56     ` Xing, Cedric
2019-04-23 19:26   ` Sean Christopherson
2019-04-23 19:44     ` Andy Lutomirski
2019-04-22 20:42 ` [RFC PATCH v1 3/3] selftests/x86: Augment SGX selftest to test new __vdso_sgx_enter_enclave() and its callback interface Cedric Xing
2019-04-23  0:37   ` Cedric Xing
2019-04-23  1:29   ` Andy Lutomirski
2019-04-23  1:48     ` Sean Christopherson
2019-04-23 18:59     ` Sean Christopherson
2019-04-23 19:07       ` Andy Lutomirski
2019-04-23 20:11         ` Sean Christopherson
2019-04-23 11:56 ` [PATCH v20 00/28] Intel SGX1 support Jarkko Sakkinen
2019-04-23 16:52   ` Andy Lutomirski
2019-04-24 12:17     ` Jarkko Sakkinen
2019-05-08 13:45       ` Jarkko Sakkinen

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190417103938.7762-24-jarkko.sakkinen@linux.intel.com \
    --to=jarkko.sakkinen@linux.intel.com \
    --cc=akpm@linux-foundation.org \
    --cc=andriy.shevchenko@linux.intel.com \
    --cc=bp@alien8.de \
    --cc=dave.hansen@intel.com \
    --cc=dave.hansen@linux.intel.com \
    --cc=greg@enjellic.com \
    --cc=haitao.huang@intel.com \
    --cc=haitao.huang@linux.intel.com \
    --cc=jethro@fortanix.com \
    --cc=josh@joshtriplett.org \
    --cc=kai.huang@intel.com \
    --cc=kai.svahn@intel.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-sgx@vger.kernel.org \
    --cc=luto@amacapital.net \
    --cc=luto@kernel.org \
    --cc=nhorman@redhat.com \
    --cc=npmccallum@redhat.com \
    --cc=rientjes@google.com \
    --cc=sean.j.christopherson@intel.com \
    --cc=serge.ayoun@intel.com \
    --cc=shay.katz-zamir@intel.com \
    --cc=tglx@linutronix.de \
    --cc=x86@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-Sgx Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-sgx/0 linux-sgx/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-sgx linux-sgx/ https://lore.kernel.org/linux-sgx \
		linux-sgx@vger.kernel.org linux-sgx@archiver.kernel.org
	public-inbox-index linux-sgx


Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-sgx


AGPL code for this site: git clone https://public-inbox.org/ public-inbox