On Mon, 18 Jul 2016 17:17:48 +0300
Marcel Apfelbaum <mar...@redhat.com> wrote:
> On 07/18/2016 04:34 PM, Igor Mammedov wrote:
> > On Sun, 17 Jul 2016 19:53:09 +0300
> > Marcel Apfelbaum <mar...@redhat.com> wrote:
> >
> >> Add an ivshmem device with 1G shared memory to
> >> pxb in order to check the ACPI code of 64bit MMIO allocation.
> > what is forcing ivshmem to be mapped above 4G?
>
> For PC machine: nothing -> ivshmem gets mapped in 32-bit area
> For Q35 machine: there is not enough space for mapping 1G
> in 32-bit area, and maybe there are also alignment constrains.
> You can use this test in verbose mode and see exactly how
> the ranges are distributed. If you want me to run it and add the output,
> please let me know.
No need to post diff, I can do V=1 manually,
the question though is: doesn't PC need ivshmem to go above 4G as well?
>
> Thanks,
> Marcel
>
> >
> >>
> >> Suggested-by: Igor Mammedov <imamm...@redhat.com>
> >> Signed-off-by: Marcel Apfelbaum <mar...@redhat.com>
> >> Tested-by: Laszlo Ersek <ler...@redhat.com>
> >> ---
> >> tests/bios-tables-test.c | 37 +++++++++++++++++++++++++++++++++++++
> >> 1 file changed, 37 insertions(+)
> >>
> >> diff --git a/tests/bios-tables-test.c b/tests/bios-tables-test.c
> >> index de4019e..b23c6b0 100644
> >> --- a/tests/bios-tables-test.c
> >> +++ b/tests/bios-tables-test.c
> >> @@ -864,6 +864,41 @@ static void test_acpi_piix4_tcg_ipmi(void)
> >> free_test_data(&data);
> >> }
> >>
> >> +static void test_acpi_piix4_tcg_pxb(void)
> >> +{
> >> + test_data data;
> >> +
> >> + memset(&data, 0, sizeof(data));
> >> + data.machine = MACHINE_PC;
> >> + data.variant = ".pxb";
> >> + data.required_struct_types = base_required_struct_types;
> >> + data.required_struct_types_len =
> >> ARRAY_SIZE(base_required_struct_types);
> >> + test_acpi_one("-machine accel=tcg"
> >> + " -device pxb,id=pxb,bus_nr=0x80,bus=pci.0"
> >> + " -object
> >> memory-backend-file,size=1G,mem-path=/tmp/shmem,share,id=mb"
> >> + " -device ivshmem-plain,memdev=mb,bus=pxb",
> >> + &data);
> >> + free_test_data(&data);
> >> +}
> >> +
> >> +static void test_acpi_q35_tcg_pxb_pcie(void)
> >> +{
> >> + test_data data;
> >> +
> >> + memset(&data, 0, sizeof(data));
> >> + data.machine = MACHINE_Q35;
> >> + data.variant = ".pxb_pcie";
> >> + data.required_struct_types = base_required_struct_types;
> >> + data.required_struct_types_len =
> >> ARRAY_SIZE(ipmi_required_struct_types);
> >> + test_acpi_one("-machine q35,accel=tcg"
> >> + " -device pxb-pcie,id=pxb,bus_nr=0x80,bus=pcie.0"
> >> + " -device ioh3420,id=rp,bus=pxb,slot=1"
> >> + " -object
> >> memory-backend-file,size=1G,mem-path=/tmp/shmem,share,id=mb"
> >> + " -device ivshmem-plain,memdev=mb,bus=rp",
> >> + &data);
> >> + free_test_data(&data);
> >> +}
> >> +
> >> int main(int argc, char *argv[])
> >> {
> >> const char *arch = qtest_get_arch();
> >> @@ -884,6 +919,8 @@ int main(int argc, char *argv[])
> >> qtest_add_func("acpi/q35/tcg/ipmi", test_acpi_q35_tcg_ipmi);
> >> qtest_add_func("acpi/piix4/tcg/cpuhp", test_acpi_piix4_tcg_cphp);
> >> qtest_add_func("acpi/q35/tcg/cpuhp", test_acpi_q35_tcg_cphp);
> >> + qtest_add_func("acpi/piix4/tcg/pxb", test_acpi_piix4_tcg_pxb);
> >> + qtest_add_func("acpi/q35/tcg/pxb-pcie",
> >> test_acpi_q35_tcg_pxb_pcie);
> >> }
> >> ret = g_test_run();
> >> boot_sector_cleanup(disk);
> >
>
>
