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Re: [Qemu-devel] [PATCH 1/3] vhost: fix incorrect userspace address
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [PATCH 1/3] vhost: fix incorrect userspace address |
Date: |
Mon, 9 Jan 2012 15:28:10 +0200 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Mon, Jan 09, 2012 at 02:04:52PM +0200, Avi Kivity wrote:
> MemoryListener::region_add() gives us a slice of a MemoryRegion, not a
> region. Adjust the userspace address to reflect that.
>
> Signed-off-by: Avi Kivity <address@hidden>
Acked-by: Michael S. Tsirkin <address@hidden>
> ---
> hw/vhost.c | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/hw/vhost.c b/hw/vhost.c
> index cd56e75..541c716 100644
> --- a/hw/vhost.c
> +++ b/hw/vhost.c
> @@ -378,7 +378,7 @@ static void vhost_set_memory(MemoryListener *listener,
> assert(size);
>
> /* Optimize no-change case. At least cirrus_vga does this a lot at this
> time. */
> - ram = memory_region_get_ram_ptr(section->mr);
> + ram = memory_region_get_ram_ptr(section->mr) +
> section->offset_within_region;
> if (add) {
> if (!vhost_dev_cmp_memory(dev, start_addr, size, (uintptr_t)ram)) {
> /* Region exists with same address. Nothing to do. */
> --
> 1.7.7.1
>