linuxkm: spruce up arch-dependent CFLAGS setup in linuxkm/Kbuild; add "failed:" to error messages in km_AesGcmEncrypt() and km_AesGcmDecrypt().

Author: douzzer

linuxkm/Kbuild

@@ -32,6 +32,10 @@ WOLFSSL_CFLAGS += -ffreestanding -Wframe-larger-than=$(MAX_STACK_FRAME_SIZE) -is
 
 ifeq "$(KERNEL_ARCH)" "x86"
     WOLFSSL_CFLAGS += -mpreferred-stack-boundary=4
+else ifeq "$(KERNEL_ARCH)" "aarch64"
+    WOLFSSL_CFLAGS += -mno-outline-atomics
+else ifeq "$(KERNEL_ARCH)" "arm64"
+    WOLFSSL_CFLAGS += -mno-outline-atomics
 endif
 
 obj-m := libwolfssl.o
@@ -47,15 +51,15 @@ $(obj)/linuxkm/module_exports.o: $(WOLFSSL_OBJ_TARGETS)
 # this mechanism only works in kernel 5.x+ (fallback to hardcoded value)
 hostprogs := linuxkm/get_thread_size
 always-y := $(hostprogs)
+
+HOST_EXTRACFLAGS += $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(KBUILD_CFLAGS) -static -fno-omit-frame-pointer
+
 # "-mindirect-branch=keep -mfunction-return=keep" to avoid "undefined reference
 #  to `__x86_return_thunk'" on CONFIG_RETHUNK kernels (5.19.0-rc7)
-ifeq "$(KERNEL_ARCH)" "aarch64"
-  HOST_EXTRACFLAGS += $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(KBUILD_CFLAGS) -static -fno-omit-frame-pointer
-else
-  HOST_EXTRACFLAGS += $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(KBUILD_CFLAGS) -static -fno-omit-frame-pointer -mindirect-branch=keep -mfunction-return=keep
+ifeq "$(KERNEL_ARCH)" "x86"
+  HOST_EXTRACFLAGS += -mindirect-branch=keep -mfunction-return=keep
 endif
 
-
 # this rule is needed to get build to succeed in 4.x (get_thread_size still doesn't get built)
 $(obj)/linuxkm/get_thread_size: $(src)/linuxkm/get_thread_size.c
 

linuxkm/lkcapi_glue.c

@@ -579,7 +579,7 @@ static int km_AesGcmEncrypt(struct aead_request *req)
 
     err = skcipher_walk_aead_encrypt(&walk, req, false);
     if (unlikely(err)) {
-        pr_err("%s: skcipher_walk_aead_encrypt: %d\n",
+        pr_err("%s: skcipher_walk_aead_encrypt failed: %d\n",
                crypto_tfm_alg_driver_name(crypto_aead_tfm(tfm)), err);
         return -1;
     }
@@ -685,7 +685,7 @@ static int km_AesGcmDecrypt(struct aead_request *req)
 
     err = skcipher_walk_aead_decrypt(&walk, req, false);
     if (unlikely(err)) {
-        pr_err("%s: skcipher_walk_aead_decrypt: %d\n",
+        pr_err("%s: skcipher_walk_aead_decrypt failed: %d\n",
                crypto_tfm_alg_driver_name(crypto_aead_tfm(tfm)), err);
         return err;
     }