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Message-Id: <20181116010412.23967-8-jarkko.sakkinen@linux.intel.com>
Date: Fri, 16 Nov 2018 03:01:14 +0200
From: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To: x86@...nel.org, platform-driver-x86@...r.kernel.org,
linux-sgx@...r.kernel.org
Cc: dave.hansen@...el.com, sean.j.christopherson@...el.com,
nhorman@...hat.com, npmccallum@...hat.com, serge.ayoun@...el.com,
shay.katz-zamir@...el.com, haitao.huang@...ux.intel.com,
andriy.shevchenko@...ux.intel.com, tglx@...utronix.de,
kai.svahn@...el.com, mark.shanahan@...el.com, luto@...capital.net,
Dave Hansen <dave.hansen@...ux.intel.com>,
Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
"H. Peter Anvin" <hpa@...or.com>,
Andy Lutomirski <luto@...nel.org>,
linux-kernel@...r.kernel.org (open list:X86 ARCHITECTURE (32-BIT AND
64-BIT))
Subject: [PATCH v17 07/23] x86/mm: x86/sgx: Add new 'PF_SGX' page fault error code bit
From: Sean Christopherson <sean.j.christopherson@...el.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@...ux.intel.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@...el.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@...ux.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
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