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.
Reviewed-by: Jarkko Sakkinen jarkko@kernel.org Signed-off-by: Reinette Chatre reinette.chatre@intel.com --- Changes since V3: - Add Jarkko's Reviewed-by tag.
Changes since V1: - Replace "for more usages" by "for usage by SGX2" (Jarkko)
arch/x86/kernel/cpu/sgx/main.c | 2 +- arch/x86/kernel/cpu/sgx/sgx.h | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kernel/cpu/sgx/main.c b/arch/x86/kernel/cpu/sgx/main.c index ce9e87d5f8ec..6e2cb7564080 100644 --- a/arch/x86/kernel/cpu/sgx/main.c +++ b/arch/x86/kernel/cpu/sgx/main.c @@ -172,7 +172,7 @@ static int __sgx_encl_ewb(struct sgx_epc_page *epc_page, void *va_slot, return ret; }
-static void sgx_ipi_cb(void *info) +void sgx_ipi_cb(void *info) { }
diff --git a/arch/x86/kernel/cpu/sgx/sgx.h b/arch/x86/kernel/cpu/sgx/sgx.h index 0f17def9fe6f..b30cee4de903 100644 --- a/arch/x86/kernel/cpu/sgx/sgx.h +++ b/arch/x86/kernel/cpu/sgx/sgx.h @@ -90,6 +90,8 @@ void sgx_mark_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);
+void sgx_ipi_cb(void *info); + #ifdef CONFIG_X86_SGX_KVM int __init sgx_vepc_init(void); #else