arm: apple: rtkit: Add endpoint field to buffers

To be used for special-case oslog support in rtkit-helper.

Signed-off-by: Hector Martin <marcan@marcan.st>
Signed-off-by: Mark Kettenis <kettenis@openbsd.org>

arch/arm/include/asm/arch-apple/rtkit.h

@@ -12,6 +12,7 @@ struct apple_rtkit_buffer {
 	u64 dva;
 	size_t size;
 	bool is_mapped;
+	int endpoint;
 };
 
 typedef int (*apple_rtkit_shmem_setup)(void *cookie,

arch/arm/mach-apple/rtkit.c

@@ -161,6 +161,7 @@ static int rtkit_handle_buf_req(struct apple_rtkit *rtk, int endpoint, struct ap
 
 	buf->dva = FIELD_GET(APPLE_RTKIT_BUFFER_REQUEST_IOVA, msg->msg0);
 	buf->is_mapped = !!buf->dva;
+	buf->endpoint = endpoint;
 
 	if (rtk->shmem_setup) {
 		ret = rtk->shmem_setup(rtk->cookie, buf);