Commit 329c416d authored May 10, 2022 by Reinette Chatre Committed by Zhiquan Li Oct 10, 2022

x86/sgx: Make sgx_ipi_cb() available internally

mainline inclusion
from mainline-6.0-rc1
commit c7c6a8a6
category: feature
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I5USAM


CVE: NA

Intel-SIG: commit c7c6a8a6 x86/sgx: Make sgx_ipi_cb() available
internally.
Backport for SGX EDMM support.

--------------------------------

The ETRACK function followed by an IPI to all CPUs within an enclave
is a common pattern with more frequent use in support of SGX2.

Make the (empty) IPI callback function available internally in
preparation for usage by SGX2.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Link: https://lkml.kernel.org/r/1179ed4a9c3c1c2abf49d51bfcf2c30b493181cc.1652137848.git.reinette.chatre@intel.com


Signed-off-by: Zhiquan Li <zhiquan1.li@intel.com>

parent b4bf6840

arch/x86/kernel/cpu/sgx/main.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -174,7 +174,7 @@ static int __sgx_encl_ewb(struct sgx_epc_page epc_page, void va_slot,
	return ret;		return ret;
	}		}

	static void sgx_ipi_cb(void *info)		void sgx_ipi_cb(void *info)
	{		{
	}		}

arch/x86/kernel/cpu/sgx/sgx.h

+2 −0

Original line number	Original line	Diff line number	Diff line
	@@ -90,6 +90,8 @@ void sgx_mark_page_reclaimable(struct sgx_epc_page *page);
	int sgx_unmark_page_reclaimable(struct sgx_epc_page *page);		int sgx_unmark_page_reclaimable(struct sgx_epc_page *page);
	struct sgx_epc_page sgx_alloc_epc_page(void owner, bool reclaim);		struct sgx_epc_page sgx_alloc_epc_page(void owner, bool reclaim);

			void sgx_ipi_cb(void *info);

	#ifdef CONFIG_X86_SGX_KVM		#ifdef CONFIG_X86_SGX_KVM
	int __init sgx_vepc_init(void);		int __init sgx_vepc_init(void);
	#else		#else