Re: [Qemu-devel] [PULL 0/7] fw_cfg: add dma interface, add strings via cmdline.

["Marc Marí" <markmb@redhat.com>]

On Mon, 19 Oct 2015 17:17:12 +0200
Laszlo Ersek <lersek@redhat.com> wrote:

> On 10/19/15 13:12, Peter Maydell wrote:
> > On 19 October 2015 at 10:17, Gerd Hoffmann <kraxel@redhat.com>
> > wrote:
> >>   Hi,
> >>
> >> As promised last week I've picked up the fw_cfg patches which are
> >> ready to go, so here comes the pull request for them.  Headline
> >> feature is the fw_cfg dam support fo course, enabled for arm and
> >> x86.  Also small fixes and an option to add string fw_cfg entries
> >> via command line.
> >>
> >> please pull,
> >>   Gerd
> >>
> >> The following changes since commit
> >> 40fe17bea478793fc9106a630fa3610dad51f939:
> >>
> >>   hw/ide/ahci.c: Fix shift left into sign bit (2015-10-18 11:00:40
> >> +0100)
> >>
> >> are available in the git repository at:
> >>
> >>   git://git.kraxel.org/qemu tags/pull-fw_cfg-20151019-1
> >>
> >> for you to fetch changes up to
> >> 7b0eec285d447057405df73beae78c8e8aeb9793:
> >>
> >>   fw_cfg: Define a static signature to be returned on DMA port
> >> reads (2015-10-19 11:00:50 +0200)
> >>
> >> ----------------------------------------------------------------
> >> fw_cfg: add dma interface, add strings via cmdline.
> >>
> >> ----------------------------------------------------------------
> > 
> > Hi. I'm afraid this fails 'make check':
> > 
> > TEST: tests/fw_cfg-test... (pid=17533)
> >   /i386/fw_cfg/signature:
> > OK /i386/fw_cfg/id:
> > ** ERROR:/home/petmay01/qemu/tests/fw_cfg-test.c:40:test_fw_cfg_id:
> > assertion failed (qfw_cfg_get_u32(fw_cfg, FW_CFG_ID) == 1): (3 == 1)
> > FAIL
> > 
> > (same failure on 64-bit ARM, ppc64be, OSX, 32-bit ARM).
> 
> Heh, tests. We have tests to keep fixing them. :)
> 
> Marc, can you add a hunk to patch "Implement fw_cfg DMA interface"
> that changes the above test to mask out everything but bit 0? I don't
> think we need to test DMA in the test suite right now (can be done in
> another series I guess), but DMA's presence shouldn't break the
> current test. I guess something like this would suffice:
> 
> diff --git a/tests/fw_cfg-test.c b/tests/fw_cfg-test.c
> index 9be78e9..27f115d 100644
> --- a/tests/fw_cfg-test.c
> +++ b/tests/fw_cfg-test.c
> @@ -37,7 +37,7 @@ static void test_fw_cfg_signature(void)
> 
>  static void test_fw_cfg_id(void)
>  {
> -    g_assert_cmpint(qfw_cfg_get_u32(fw_cfg, FW_CFG_ID), ==, 1);
> +    g_assert_cmpint(qfw_cfg_get_u32(fw_cfg, FW_CFG_ID) & 1, ==, 1);
>  }
> 
>  static void test_fw_cfg_uuid(void)
> 
> (Sorry if this has been suggested already, trying to catch up with my
> mailbox...)

"Fixed that.  Patch updated, tests running, updated pull soon." - Gerd
Hoffman

> Thanks
> Laszlo
> 
> > 
> > Windows fails to compile:
> > /home/petmay01/linaro/qemu-for-merges/hw/nvram/fw_cfg.c: In function
> > ‘fw_cfg_dma_mem_read’:
> > /home/petmay01/linaro/qemu-for-merges/hw/nvram/fw_cfg.c:406:
> > warning: integer constant is too large for ‘long’ type
> > 
> > thanks
> > -- PMM
> > 
>