From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40066) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YbBk0-00050b-Ql for qemu-devel@nongnu.org; Thu, 26 Mar 2015 13:38:49 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YbBjy-0003V3-Lq for qemu-devel@nongnu.org; Thu, 26 Mar 2015 13:38:48 -0400 Received: from mx1.redhat.com ([209.132.183.28]:40017) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YbBjy-0003Ux-E3 for qemu-devel@nongnu.org; Thu, 26 Mar 2015 13:38:46 -0400 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id t2QHcjNM023390 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL) for ; Thu, 26 Mar 2015 13:38:46 -0400 From: Paolo Bonzini Date: Thu, 26 Mar 2015 18:38:19 +0100 Message-Id: <1427391520-29497-2-git-send-email-pbonzini@redhat.com> In-Reply-To: <1427391520-29497-1-git-send-email-pbonzini@redhat.com> References: <1427391520-29497-1-git-send-email-pbonzini@redhat.com> Subject: [Qemu-devel] [PATCH 01/22] memory: add memory_region_ram_resize List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: "Michael S. Tsirkin" This is a simple MemoryRegion wrapper for qemu_ram_resize. Cc: Michael S. Tsirkin Signed-off-by: Paolo Bonzini --- include/exec/memory.h | 12 ++++++++++++ memory.c | 7 +++++++ 2 files changed, 19 insertions(+) diff --git a/include/exec/memory.h b/include/exec/memory.h index 06ffa1d..a2ea587 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -605,6 +605,18 @@ int memory_region_get_fd(MemoryRegion *mr); */ void *memory_region_get_ram_ptr(MemoryRegion *mr); +/* memory_region_ram_resize: Resize a RAM region. + * + * Only legal before guest might have detected the memory size: e.g. on + * incoming migration, or right after reset. + * + * @mr: a memory region created with @memory_region_init_resizeable_ram. + * @newsize: the new size the region + * @errp: pointer to Error*, to store an error if it happens. + */ +void memory_region_ram_resize(MemoryRegion *mr, ram_addr_t newsize, + Error **errp); + /** * memory_region_set_log: Turn dirty logging on or off for a region. * diff --git a/memory.c b/memory.c index ee3f2a8..a11e9bf 100644 --- a/memory.c +++ b/memory.c @@ -1452,6 +1452,13 @@ void *memory_region_get_ram_ptr(MemoryRegion *mr) return qemu_get_ram_ptr(mr->ram_addr & TARGET_PAGE_MASK); } +void memory_region_ram_resize(MemoryRegion *mr, ram_addr_t newsize, Error **errp) +{ + assert(mr->terminates); + + qemu_ram_resize(mr->ram_addr, newsize, errp); +} + static void memory_region_update_coalesced_range_as(MemoryRegion *mr, AddressSpace *as) { FlatView *view; -- 2.3.3