65 lines
2.6 KiB
Diff
65 lines
2.6 KiB
Diff
From b4657a1cf12f3a0a650498d87f4e91aae76cc840 Mon Sep 17 00:00:00 2001
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From: Kai Huang <kai.huang@intel.com>
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Date: Wed, 9 Nov 2022 15:48:34 +1300
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Subject: [PATCH] target/i386: Add SGX aex-notify and EDECCSSA support
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from mainline-v8.0.0-rc0
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commit d45f24fe7525d8a8aaa4ca6d9d214dc41819caa5
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category: feature
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feature: SGX aex-notify and EDECCSSA support
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bugzilla: https://gitee.com/openeuler/intel-qemu/issues/I6Y4W4
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Intel-SIG: commit d45f24fe7525 ("target/i386: Add SGX aex-notify and EDECCSSA support")
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-----------------------------------------------------------
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The new SGX Asynchronous Exit (AEX) notification mechanism (AEX-notify)
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allows one enclave to receive a notification in the ERESUME after the
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enclave exit due to an AEX. EDECCSSA is a new SGX user leaf function
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(ENCLU[EDECCSSA]) to facilitate the AEX notification handling.
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Whether the hardware supports to create enclave with AEX-notify support
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is enumerated via CPUID.(EAX=0x12,ECX=0x1):EAX[10]. The new EDECCSSA
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user leaf function is enumerated via CPUID.(EAX=0x12,ECX=0x0):EAX[11].
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Add support to allow to expose the new SGX AEX-notify feature and the
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new EDECCSSA user leaf function to KVM guest.
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Link: https://lore.kernel.org/lkml/166760360549.4906.809756297092548496.tip-bot2@tip-bot2/
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Link: https://lore.kernel.org/lkml/166760360934.4906.2427175408052308969.tip-bot2@tip-bot2/
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Reviewed-by: Yang Zhong <yang.zhong@linux.intel.com>
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Signed-off-by: Kai Huang <kai.huang@intel.com>
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Message-Id: <20221109024834.172705-1-kai.huang@intel.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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[ jason: amend commit log ]
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Signed-off-by: Jason Zeng <jason.zeng@intel.com>
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---
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target/i386/cpu.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/target/i386/cpu.c b/target/i386/cpu.c
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index 61cd7abcaa..df475f27d3 100644
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--- a/target/i386/cpu.c
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+++ b/target/i386/cpu.c
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@@ -1205,7 +1205,7 @@ FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
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.feat_names = {
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"sgx1", "sgx2", NULL, NULL,
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NULL, NULL, NULL, NULL,
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- NULL, NULL, NULL, NULL,
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+ NULL, NULL, NULL, "sgx-edeccssa",
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NULL, NULL, NULL, NULL,
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NULL, NULL, NULL, NULL,
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NULL, NULL, NULL, NULL,
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@@ -1245,7 +1245,7 @@ FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
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.feat_names = {
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NULL, "sgx-debug", "sgx-mode64", NULL,
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"sgx-provisionkey", "sgx-tokenkey", NULL, "sgx-kss",
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- NULL, NULL, NULL, NULL,
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+ NULL, NULL, "sgx-aex-notify", NULL,
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NULL, NULL, NULL, NULL,
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NULL, NULL, NULL, NULL,
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NULL, NULL, NULL, NULL,
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--
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2.27.0
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