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Re: [Qemu-devel] [PATCH 1/2 v2] pci: change default value of rom_bar to
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [PATCH 1/2 v2] pci: change default value of rom_bar to 2 |
Date: |
Thu, 20 Feb 2014 10:12:35 +0200 |
On Wed, Feb 19, 2014 at 03:20:54PM -0500, Bandan Das wrote:
> The following patch depends on the value of rom_bar to
> determine rom blacklist behavior. Existing code shouldn't
> be affected by changing the default value of rom_bar since
> all relevant decisions only rely on whether rom_bar is zero
> or non-zero.
>
> Signed-off-by: Bandan Das <address@hidden>
> ---
> hw/pci/pci.c | 7 ++++++-
> 1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/hw/pci/pci.c b/hw/pci/pci.c
> index 4e0701d..12c3e27 100644
> --- a/hw/pci/pci.c
> +++ b/hw/pci/pci.c
> @@ -53,7 +53,12 @@ static void pci_bus_finalize(Object *obj);
> static Property pci_props[] = {
> DEFINE_PROP_PCI_DEVFN("addr", PCIDevice, devfn, -1),
> DEFINE_PROP_STRING("romfile", PCIDevice, romfile),
> - DEFINE_PROP_UINT32("rombar", PCIDevice, rom_bar, 1),
> + /*
> + * 0 = disable
> + * 1 = user requested on, force loading even if rom blacklisted
> + * 2 = enabled but disables loading of blacklisted roms (default)
> + */
> + DEFINE_PROP_UINT32("rombar", PCIDevice, rom_bar, 2),
How do users figure out this interface?
Read code?
Could we add a bit property rombarforce=on/off instead?
Seems better.
Maybe we should teach bool type visitors
about 0 and 1 being legal values
(call out to int visitor, then check value 0 or 1),
then rombar can be changed to bit property too.
Also, this will need QMP support right?
IIUC rombar is not exposed in QMP ATM.
> DEFINE_PROP_BIT("multifunction", PCIDevice, cap_present,
> QEMU_PCI_CAP_MULTIFUNCTION_BITNR, false),
> DEFINE_PROP_BIT("command_serr_enable", PCIDevice, cap_present,
> --
> 1.8.3.1
- [Qemu-devel] [PATCH 0/2 v2] vfio: blacklist loading of unstable roms, Bandan Das, 2014/02/19
- [Qemu-devel] [PATCH 1/2 v2] pci: change default value of rom_bar to 2, Bandan Das, 2014/02/19
- Re: [Qemu-devel] [PATCH 1/2 v2] pci: change default value of rom_bar to 2, Alex Williamson, 2014/02/19
- Re: [Qemu-devel] [PATCH 1/2 v2] pci: change default value of rom_bar to 2,
Michael S. Tsirkin <=
- Re: [Qemu-devel] [PATCH 1/2 v2] pci: change default value of rom_bar to 2, Bandan Das, 2014/02/20
- Re: [Qemu-devel] [PATCH 1/2 v2] pci: change default value of rom_bar to 2, Alex Williamson, 2014/02/22
- Re: [Qemu-devel] [PATCH 1/2 v2] pci: change default value of rom_bar to 2, Michael S. Tsirkin, 2014/02/23
- Re: [Qemu-devel] [PATCH 1/2 v2] pci: change default value of rom_bar to 2, Alex Williamson, 2014/02/23
- Re: [Qemu-devel] [PATCH 1/2 v2] pci: change default value of rom_bar to 2, Michael S. Tsirkin, 2014/02/23
- Re: [Qemu-devel] [PATCH 1/2 v2] pci: change default value of rom_bar to 2, Bandan Das, 2014/02/23
- Re: [Qemu-devel] [PATCH 1/2 v2] pci: change default value of rom_bar to 2, Alex Williamson, 2014/02/23
[Qemu-devel] [PATCH 2/2 v2] vfio: blacklist loading of unstable roms, Bandan Das, 2014/02/19