From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: <x86@kernel.org>, <platform-driver-x86@vger.kernel.org>,
<linux-sgx@vger.kernel.org>
Cc: <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>,
Dave Hansen <dave.hansen@linux.intel.com>,
"Jarkko Sakkinen" <jarkko.sakkinen@linux.intel.com>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"H. Peter Anvin" <hpa@zytor.com>,
"Andy Lutomirski" <luto@kernel.org>,
"open list:X86 ARCHITECTURE (32-BIT AND 64-BIT)"
<linux-kernel@vger.kernel.org>
Subject: [PATCH v16 07/22] x86/mm: x86/sgx: Add new 'PF_SGX' page fault error code bit
Date: Tue, 6 Nov 2018 15:45:46 +0200 [thread overview]
Message-ID: <20181106134758.10572-8-jarkko.sakkinen@linux.intel.com> (raw)
In-Reply-To: <20181106134758.10572-1-jarkko.sakkinen@linux.intel.com>
From: Sean Christopherson <sean.j.christopherson@intel.com>
The SGX bit is set in the #PF error code if and only if the fault is
detected by the Enclave Page Cache Map (EPCM), a hardware-managed
table that enforces the paging permissions defined by the enclave,
e.g. to prevent the kernel from changing the permissions of an
enclave's page(s).
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
---
arch/x86/include/asm/traps.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/include/asm/traps.h b/arch/x86/include/asm/traps.h
index 3de69330e6c5..165c93dd700e 100644
--- a/arch/x86/include/asm/traps.h
+++ b/arch/x86/include/asm/traps.h
@@ -162,5 +162,6 @@ enum x86_pf_error_code {
X86_PF_RSVD = 1 << 3,
X86_PF_INSTR = 1 << 4,
X86_PF_PK = 1 << 5,
+ X86_PF_SGX = 1 << 15,
};
#endif /* _ASM_X86_TRAPS_H */
--
2.19.1
WARNING: multiple messages have this Message-ID (diff)
From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: x86@kernel.org, platform-driver-x86@vger.kernel.org,
linux-sgx@vger.kernel.org
Cc: 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, Dave Hansen <dave.hansen@linux.intel.com>,
Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Andy Lutomirski <luto@kernel.org>,
linux-kernel@vger.kernel.org (open list:X86 ARCHITECTURE (32-BIT
AND 64-BIT))
Subject: [PATCH v16 07/22] x86/mm: x86/sgx: Add new 'PF_SGX' page fault error code bit
Date: Tue, 6 Nov 2018 15:45:46 +0200 [thread overview]
Message-ID: <20181106134758.10572-8-jarkko.sakkinen@linux.intel.com> (raw)
Message-ID: <20181106134546.8rCAK5bWDd9rUk48aOKY0GW4ugSoQnd_7Fw28XMUlWM@z> (raw)
In-Reply-To: <20181106134758.10572-1-jarkko.sakkinen@linux.intel.com>
From: Sean Christopherson <sean.j.christopherson@intel.com>
The SGX bit is set in the #PF error code if and only if the fault is
detected by the Enclave Page Cache Map (EPCM), a hardware-managed
table that enforces the paging permissions defined by the enclave,
e.g. to prevent the kernel from changing the permissions of an
enclave's page(s).
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
---
arch/x86/include/asm/traps.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/include/asm/traps.h b/arch/x86/include/asm/traps.h
index 3de69330e6c5..165c93dd700e 100644
--- a/arch/x86/include/asm/traps.h
+++ b/arch/x86/include/asm/traps.h
@@ -162,5 +162,6 @@ enum x86_pf_error_code {
X86_PF_RSVD = 1 << 3,
X86_PF_INSTR = 1 << 4,
X86_PF_PK = 1 << 5,
+ X86_PF_SGX = 1 << 15,
};
#endif /* _ASM_X86_TRAPS_H */
--
2.19.1
next prev parent reply other threads:[~2018-11-06 23:15 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-06 13:45 [PATCH v16 00/22] Intel SGX1 support Jarkko Sakkinen
2018-11-06 13:45 ` Jarkko Sakkinen
2018-11-06 13:45 ` [PATCH v16 01/22] x86/sgx: Update MAINTAINERS Jarkko Sakkinen
2018-11-06 13:45 ` Jarkko Sakkinen
2018-11-06 13:45 ` [PATCH v16 02/22] x86/cpufeatures: Add Intel-defined SGX feature bit Jarkko Sakkinen
2018-11-06 13:45 ` Jarkko Sakkinen
2018-11-06 13:45 ` [PATCH v16 03/22] x86/cpufeatures: Add SGX sub-features (as Linux-defined bits) Jarkko Sakkinen
2018-11-06 13:45 ` Jarkko Sakkinen
2018-11-06 13:45 ` [PATCH v16 04/22] x86/msr: Add IA32_FEATURE_CONTROL.SGX_ENABLE definition Jarkko Sakkinen
2018-11-06 13:45 ` Jarkko Sakkinen
2018-11-06 13:45 ` [PATCH v16 05/22] x86/cpufeatures: Add Intel-defined SGX_LC feature bit Jarkko Sakkinen
2018-11-06 13:45 ` Jarkko Sakkinen
2018-11-06 13:45 ` [PATCH v16 06/22] x86/cpu/intel: Detect SGX support and update caps appropriately Jarkko Sakkinen
2018-11-06 13:45 ` Jarkko Sakkinen
2018-11-06 13:58 ` Sean Christopherson
2018-11-06 13:58 ` Sean Christopherson
2018-11-07 15:58 ` Jarkko Sakkinen
2018-11-06 13:45 ` Jarkko Sakkinen [this message]
2018-11-06 13:45 ` [PATCH v16 07/22] x86/mm: x86/sgx: Add new 'PF_SGX' page fault error code bit Jarkko Sakkinen
2018-11-06 13:45 ` [PATCH v16 08/22] x86/mm: x86/sgx: Signal SIGSEGV for userspace #PFs w/ PF_SGX Jarkko Sakkinen
2018-11-06 13:45 ` Jarkko Sakkinen
2018-11-06 13:45 ` [PATCH v16 09/22] x86/sgx: Define SGX1 and SGX2 ENCLS leafs Jarkko Sakkinen
2018-11-06 13:45 ` Jarkko Sakkinen
2018-11-06 13:45 ` [PATCH v16 10/22] x86/sgx: Add ENCLS architectural error codes Jarkko Sakkinen
2018-11-06 13:45 ` Jarkko Sakkinen
2018-11-06 13:45 ` [PATCH v16 11/22] x86/sgx: Add SGX1 and SGX2 architectural data structures Jarkko Sakkinen
2018-11-06 13:45 ` Jarkko Sakkinen
2018-11-06 13:45 ` [PATCH v16 12/22] x86/sgx: Add definitions for SGX's CPUID leaf and variable sub-leafs Jarkko Sakkinen
2018-11-06 13:45 ` Jarkko Sakkinen
2018-11-06 13:45 ` [PATCH v16 13/22] x86/msr: Add SGX Launch Control MSR definitions Jarkko Sakkinen
2018-11-06 13:45 ` Jarkko Sakkinen
2018-11-06 13:45 ` [PATCH v16 14/22] x86/sgx: Add wrappers for ENCLS leaf functions Jarkko Sakkinen
2018-11-06 13:45 ` Jarkko Sakkinen
2018-11-06 13:45 ` [PATCH v16 15/22] x86/sgx: Enumerate and track EPC sections Jarkko Sakkinen
2018-11-06 13:45 ` Jarkko Sakkinen
2018-11-06 13:45 ` [PATCH v16 16/22] x86/sgx: Add functions to allocate and free EPC pages Jarkko Sakkinen
2018-11-06 13:45 ` Jarkko Sakkinen
2018-11-06 13:45 ` [PATCH v16 17/22] x86/sgx: Add sgx_einit() for initializing enclaves Jarkko Sakkinen
2018-11-06 13:45 ` Jarkko Sakkinen
2018-11-06 13:45 ` [PATCH v16 18/22] platform/x86: Intel SGX driver Jarkko Sakkinen
2018-11-06 13:45 ` Jarkko Sakkinen
2018-11-06 16:40 ` Sean Christopherson
2018-11-06 16:57 ` Dave Hansen
2018-11-07 16:37 ` Jarkko Sakkinen
2018-11-07 18:00 ` Sean Christopherson
2018-11-07 18:00 ` Sean Christopherson
2018-11-08 14:46 ` Jarkko Sakkinen
2018-11-15 20:00 ` Jarkko Sakkinen
2018-11-15 20:04 ` Jarkko Sakkinen
2018-11-15 20:16 ` Jarkko Sakkinen
2018-11-21 11:46 ` Jarkko Sakkinen
2018-11-07 10:29 ` David Laight
2018-11-06 13:45 ` [PATCH v16 19/22] platform/x86: sgx: Add swapping functionality to the " Jarkko Sakkinen
2018-11-06 13:45 ` Jarkko Sakkinen
2018-11-06 13:45 ` [PATCH v16 20/22] x86/sgx: Add a simple swapper for the EPC memory manager Jarkko Sakkinen
2018-11-06 13:45 ` Jarkko Sakkinen
2018-11-06 13:46 ` [PATCH v16 21/22] platform/x86: ptrace() support for the SGX driver Jarkko Sakkinen
2018-11-06 13:46 ` Jarkko Sakkinen
2018-11-06 13:46 ` [PATCH v16 22/22] x86/sgx: SGX documentation Jarkko Sakkinen
2018-11-06 13:46 ` Jarkko Sakkinen
2018-11-27 20:13 ` Pavel Machek
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