From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marcelo Tosatti Subject: [uq/master patch 5/5] introduce qemu_ram_map Date: Fri, 23 Apr 2010 14:04:15 -0300 Message-ID: <20100423170646.344848232@amt.cnet> References: <20100423170410.914857113@amt.cnet> Cc: qemu-devel@nongnu.org, Cam Macdonell , Marcelo Tosatti To: kvm@vger.kernel.org Return-path: Received: from mx1.redhat.com ([209.132.183.28]:19132 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758355Ab0DWRIq (ORCPT ); Fri, 23 Apr 2010 13:08:46 -0400 Content-Disposition: inline; filename=qemu-ram-mmap Sender: kvm-owner@vger.kernel.org List-ID: Which allows drivers to register an mmaped region into ram block mappings. To be used by device assignment driver. CC: Cam Macdonell Signed-off-by: Marcelo Tosatti Index: qemu-kvm/cpu-common.h =================================================================== --- qemu-kvm.orig/cpu-common.h +++ qemu-kvm/cpu-common.h @@ -32,6 +32,7 @@ static inline void cpu_register_physical } ram_addr_t cpu_get_physical_page_desc(target_phys_addr_t addr); +ram_addr_t qemu_ram_map(ram_addr_t size, void *host); ram_addr_t qemu_ram_alloc(ram_addr_t); void qemu_ram_free(ram_addr_t addr); /* This should only be used for ram local to a device. */ Index: qemu-kvm/exec.c =================================================================== --- qemu-kvm.orig/exec.c +++ qemu-kvm/exec.c @@ -2710,6 +2710,34 @@ static void *file_ram_alloc(ram_addr_t m } #endif +ram_addr_t qemu_ram_map(ram_addr_t size, void *host) +{ + RAMBlock *new_block; + + size = TARGET_PAGE_ALIGN(size); + new_block = qemu_malloc(sizeof(*new_block)); + + new_block->host = host; + + new_block->offset = last_ram_offset; + new_block->length = size; + + new_block->next = ram_blocks; + ram_blocks = new_block; + + phys_ram_dirty = qemu_realloc(phys_ram_dirty, + (last_ram_offset + size) >> TARGET_PAGE_BITS); + memset(phys_ram_dirty + (last_ram_offset >> TARGET_PAGE_BITS), + 0xff, size >> TARGET_PAGE_BITS); + + last_ram_offset += size; + + if (kvm_enabled()) + kvm_setup_guest_memory(new_block->host, size); + + return new_block->offset; +} + ram_addr_t qemu_ram_alloc(ram_addr_t size) { RAMBlock *new_block; From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1O5MN7-0006mG-Do for qemu-devel@nongnu.org; Fri, 23 Apr 2010 13:08:57 -0400 Received: from [140.186.70.92] (port=53517 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1O5MN3-0006it-Hh for qemu-devel@nongnu.org; Fri, 23 Apr 2010 13:08:54 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1O5MMw-0002Wn-Pf for qemu-devel@nongnu.org; Fri, 23 Apr 2010 13:08:52 -0400 Received: from mx1.redhat.com ([209.132.183.28]:36258) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1O5MMw-0002WF-I3 for qemu-devel@nongnu.org; Fri, 23 Apr 2010 13:08:46 -0400 Message-Id: <20100423170646.344848232@amt.cnet> Date: Fri, 23 Apr 2010 14:04:15 -0300 From: Marcelo Tosatti References: <20100423170410.914857113@amt.cnet> Content-Disposition: inline; filename=qemu-ram-mmap Subject: [Qemu-devel] [uq/master patch 5/5] introduce qemu_ram_map List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: kvm@vger.kernel.org Cc: Cam Macdonell , qemu-devel@nongnu.org, Marcelo Tosatti Which allows drivers to register an mmaped region into ram block mappings. To be used by device assignment driver. CC: Cam Macdonell Signed-off-by: Marcelo Tosatti Index: qemu-kvm/cpu-common.h =================================================================== --- qemu-kvm.orig/cpu-common.h +++ qemu-kvm/cpu-common.h @@ -32,6 +32,7 @@ static inline void cpu_register_physical } ram_addr_t cpu_get_physical_page_desc(target_phys_addr_t addr); +ram_addr_t qemu_ram_map(ram_addr_t size, void *host); ram_addr_t qemu_ram_alloc(ram_addr_t); void qemu_ram_free(ram_addr_t addr); /* This should only be used for ram local to a device. */ Index: qemu-kvm/exec.c =================================================================== --- qemu-kvm.orig/exec.c +++ qemu-kvm/exec.c @@ -2710,6 +2710,34 @@ static void *file_ram_alloc(ram_addr_t m } #endif +ram_addr_t qemu_ram_map(ram_addr_t size, void *host) +{ + RAMBlock *new_block; + + size = TARGET_PAGE_ALIGN(size); + new_block = qemu_malloc(sizeof(*new_block)); + + new_block->host = host; + + new_block->offset = last_ram_offset; + new_block->length = size; + + new_block->next = ram_blocks; + ram_blocks = new_block; + + phys_ram_dirty = qemu_realloc(phys_ram_dirty, + (last_ram_offset + size) >> TARGET_PAGE_BITS); + memset(phys_ram_dirty + (last_ram_offset >> TARGET_PAGE_BITS), + 0xff, size >> TARGET_PAGE_BITS); + + last_ram_offset += size; + + if (kvm_enabled()) + kvm_setup_guest_memory(new_block->host, size); + + return new_block->offset; +} + ram_addr_t qemu_ram_alloc(ram_addr_t size) { RAMBlock *new_block;