From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:57084) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UQ3VO-0007ws-DK for qemu-devel@nongnu.org; Wed, 10 Apr 2013 18:28:45 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UQ3VJ-00019m-Ae for qemu-devel@nongnu.org; Wed, 10 Apr 2013 18:28:38 -0400 Received: from e38.co.us.ibm.com ([32.97.110.159]:49299) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UQ3VJ-00019T-4L for qemu-devel@nongnu.org; Wed, 10 Apr 2013 18:28:33 -0400 Received: from /spool/local by e38.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 10 Apr 2013 16:28:31 -0600 Received: from d03relay01.boulder.ibm.com (d03relay01.boulder.ibm.com [9.17.195.226]) by d03dlp01.boulder.ibm.com (Postfix) with ESMTP id 00A331FF0049 for ; Wed, 10 Apr 2013 16:23:27 -0600 (MDT) Received: from d03av06.boulder.ibm.com (d03av06.boulder.ibm.com [9.17.195.245]) by d03relay01.boulder.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r3AMSQIi125844 for ; Wed, 10 Apr 2013 16:28:26 -0600 Received: from d03av06.boulder.ibm.com (loopback [127.0.0.1]) by d03av06.boulder.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r3AMVDBS003223 for ; Wed, 10 Apr 2013 16:31:13 -0600 From: mrhines@linux.vnet.ibm.com Date: Wed, 10 Apr 2013 18:28:12 -0400 Message-Id: <1365632901-15470-5-git-send-email-mrhines@linux.vnet.ibm.com> In-Reply-To: <1365632901-15470-1-git-send-email-mrhines@linux.vnet.ibm.com> References: <1365632901-15470-1-git-send-email-mrhines@linux.vnet.ibm.com> Subject: [Qemu-devel] [RFC PATCH RDMA support v1: 04/13] update QEMUFileOps with new hooks List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: aliguori@us.ibm.com, mst@redhat.com, owasserm@redhat.com, abali@us.ibm.com, mrhines@us.ibm.com, gokul@us.ibm.com, pbonzini@redhat.com From: "Michael R. Hines" These are just the prototypes for optional new hooks that RDMA takes advantage of to perform dynamic page registration. An optional hook is also introduce for a custom function to be able to override the default save_page function. Signed-off-by: Michael R. Hines --- include/migration/qemu-file.h | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/include/migration/qemu-file.h b/include/migration/qemu-file.h index 623c434..e2eca28 100644 --- a/include/migration/qemu-file.h +++ b/include/migration/qemu-file.h @@ -23,6 +23,7 @@ */ #ifndef QEMU_FILE_H #define QEMU_FILE_H 1 +#include "exec/cpu-common.h" /* This function writes a chunk of data to a file at the given position. * The pos argument can be ignored if the file is only being used for @@ -57,12 +58,39 @@ typedef int (QEMUFileGetFD)(void *opaque); typedef ssize_t (QEMUFileWritevBufferFunc)(void *opaque, struct iovec *iov, int iovcnt); +/* + * This function provides hooks around different + * stages of RAM migration. + */ +typedef int (QEMURamHookFunc)(QEMUFile *f, void *opaque, uint32_t flags); + +/* + * Constants used by QEMURamFunc. + */ +#define RAM_CONTROL_SETUP 0 +#define RAM_CONTROL_ROUND 1 +#define RAM_CONTROL_REGISTER 2 +#define RAM_CONTROL_FINISH 3 + +/* + * This function allows override of where the RAM page + * is saved (such as RDMA, for example.) + */ +typedef size_t (QEMURamSaveFunc)(QEMUFile *f, void *opaque, + ram_addr_t block_offset, + ram_addr_t offset, + int cont, size_t size, bool zero); + typedef struct QEMUFileOps { QEMUFilePutBufferFunc *put_buffer; QEMUFileGetBufferFunc *get_buffer; QEMUFileCloseFunc *close; QEMUFileGetFD *get_fd; QEMUFileWritevBufferFunc *writev_buffer; + QEMURamHookFunc *before_ram_iterate; + QEMURamHookFunc *after_ram_iterate; + QEMURamHookFunc *hook_ram_load; + QEMURamSaveFunc *save_page; } QEMUFileOps; QEMUFile *qemu_fopen_ops(void *opaque, const QEMUFileOps *ops); @@ -81,6 +109,8 @@ void qemu_put_byte(QEMUFile *f, int v); */ void qemu_put_buffer_async(QEMUFile *f, const uint8_t *buf, int size); +bool qemu_file_mode_is_not_valid(const char * mode); + static inline void qemu_put_ubyte(QEMUFile *f, unsigned int v) { qemu_put_byte(f, (int)v); -- 1.7.10.4