[tip: x86/sgx] x86/sgx: Export sgx_encl_{grow,shrink}()

[tip-bot2 for Reinette Chatre]

The following commit has been merged into the x86/sgx branch of tip:

Commit-ID:     3a5351415228d06c988a1e610e71d3889f707ac9
Gitweb:        https://git.kernel.org/tip/3a5351415228d06c988a1e610e71d3889f707ac9
Author:        Reinette Chatre <reinette.chatre@xxxxxxxxx>
AuthorDate:    Tue, 10 May 2022 11:08:48 -07:00
Committer:     Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
CommitterDate: Thu, 07 Jul 2022 10:13:02 -07:00

x86/sgx: Export sgx_encl_{grow,shrink}()

In order to use sgx_encl_{grow,shrink}() in the page augmentation code
located in encl.c, export these functions.

Suggested-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx>
Signed-off-by: Reinette Chatre <reinette.chatre@xxxxxxxxx>
Signed-off-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Reviewed-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx>
Link: https://lkml.kernel.org/r/d51730acf54b6565710b2261b3099517b38c2ec4.1652137848.git.reinette.chatre@xxxxxxxxx
---
 arch/x86/kernel/cpu/sgx/encl.h  | 2 ++
 arch/x86/kernel/cpu/sgx/ioctl.c | 4 ++--
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/cpu/sgx/encl.h b/arch/x86/kernel/cpu/sgx/encl.h
index 799d4cd..b6b53c0 100644
--- a/arch/x86/kernel/cpu/sgx/encl.h
+++ b/arch/x86/kernel/cpu/sgx/encl.h
@@ -120,5 +120,7 @@ bool sgx_va_page_full(struct sgx_va_page *va_page);
 void sgx_encl_free_epc_page(struct sgx_epc_page *page);
 struct sgx_encl_page *sgx_encl_load_page(struct sgx_encl *encl,
 					 unsigned long addr);
+struct sgx_va_page *sgx_encl_grow(struct sgx_encl *encl);
+void sgx_encl_shrink(struct sgx_encl *encl, struct sgx_va_page *va_page);
 
 #endif /* _X86_ENCL_H */
diff --git a/arch/x86/kernel/cpu/sgx/ioctl.c b/arch/x86/kernel/cpu/sgx/ioctl.c
index 21078c6..2df27dd 100644
--- a/arch/x86/kernel/cpu/sgx/ioctl.c
+++ b/arch/x86/kernel/cpu/sgx/ioctl.c
@@ -17,7 +17,7 @@
 #include "encl.h"
 #include "encls.h"
 
-static struct sgx_va_page *sgx_encl_grow(struct sgx_encl *encl)
+struct sgx_va_page *sgx_encl_grow(struct sgx_encl *encl)
 {
 	struct sgx_va_page *va_page = NULL;
 	void *err;
@@ -43,7 +43,7 @@ static struct sgx_va_page *sgx_encl_grow(struct sgx_encl *encl)
 	return va_page;
 }
 
-static void sgx_encl_shrink(struct sgx_encl *encl, struct sgx_va_page *va_page)
+void sgx_encl_shrink(struct sgx_encl *encl, struct sgx_va_page *va_page)
 {
 	encl->page_cnt--;