Re: [PATCH v4 07/27] hw/i386/x86: Remove X86MachineClass::fwcfg_dma_enabled field

[Igor Mammedov <imammedo@redhat.com>]

On Fri, 9 May 2025 17:41:25 +0200
Igor Mammedov <imammedo@redhat.com> wrote:

> On Thu,  8 May 2025 15:35:30 +0200
> Philippe Mathieu-Daudé <philmd@linaro.org> wrote:
> 
> > The X86MachineClass::fwcfg_dma_enabled boolean was only used
> > by the pc-q35-2.6 and pc-i440fx-2.6 machines, which got
> > removed. Remove it and simplify.
> > 
> > 'multiboot.bin' isn't used anymore, we'll remove it in the
> > next commit.
> > 
> > Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> > ---
> >  include/hw/i386/x86.h | 2 --
> >  hw/i386/microvm.c     | 3 ---
> >  hw/i386/multiboot.c   | 7 +------
> >  hw/i386/x86-common.c  | 3 +--
> >  hw/i386/x86.c         | 2 --
> >  5 files changed, 2 insertions(+), 15 deletions(-)
> > 
> > diff --git a/include/hw/i386/x86.h b/include/hw/i386/x86.h
> > index fc460b82f82..29d37af11e6 100644
> > --- a/include/hw/i386/x86.h
> > +++ b/include/hw/i386/x86.h
> > @@ -29,8 +29,6 @@
> >  struct X86MachineClass {
> >      MachineClass parent;
> >  
> > -    /* use DMA capable linuxboot option rom */
> > -    bool fwcfg_dma_enabled;
> >      /* CPU and apic information: */
> >      bool apic_xrupt_override;
> >  };
> > diff --git a/hw/i386/microvm.c b/hw/i386/microvm.c
> > index e0daf0d4fc3..b1262fb1523 100644
> > --- a/hw/i386/microvm.c
> > +++ b/hw/i386/microvm.c
> > @@ -637,7 +637,6 @@ GlobalProperty microvm_properties[] = {
> >  
> >  static void microvm_class_init(ObjectClass *oc, const void *data)
> >  {
> > -    X86MachineClass *x86mc = X86_MACHINE_CLASS(oc);
> >      MicrovmMachineClass *mmc = MICROVM_MACHINE_CLASS(oc);
> >      MachineClass *mc = MACHINE_CLASS(oc);
> >      HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
> > @@ -671,8 +670,6 @@ static void microvm_class_init(ObjectClass *oc, const void *data)
> >      hc->unplug_request = microvm_device_unplug_request_cb;
> >      hc->unplug = microvm_device_unplug_cb;
> >  
> > -    x86mc->fwcfg_dma_enabled = true;
> > -
> >      object_class_property_add(oc, MICROVM_MACHINE_RTC, "OnOffAuto",
> >                                microvm_machine_get_rtc,
> >                                microvm_machine_set_rtc,
> > diff --git a/hw/i386/multiboot.c b/hw/i386/multiboot.c
> > index 6e6b96bc345..bfa7e8f1e83 100644
> > --- a/hw/i386/multiboot.c
> > +++ b/hw/i386/multiboot.c
> > @@ -153,7 +153,6 @@ int load_multiboot(X86MachineState *x86ms,
> >                     int kernel_file_size,
> >                     uint8_t *header)
> >  {
> > -    bool multiboot_dma_enabled = X86_MACHINE_GET_CLASS(x86ms)->fwcfg_dma_enabled;
> >      int i, is_multiboot = 0;
> >      uint32_t flags = 0;
> >      uint32_t mh_entry_addr;
> > @@ -402,11 +401,7 @@ int load_multiboot(X86MachineState *x86ms,
> >      fw_cfg_add_bytes(fw_cfg, FW_CFG_INITRD_DATA, mb_bootinfo_data,
> >                       sizeof(bootinfo));
> >  
> > -    if (multiboot_dma_enabled) {
> > -        option_rom[nb_option_roms].name = "multiboot_dma.bin";
> > -    } else {
> > -        option_rom[nb_option_roms].name = "multiboot.bin";  
> 
> shouldn't we remove "multiboot.bin" as well?

never mind, I see it's being removed by the next patch

Reviewed-by: Igor Mammedov <imammedo@redhat.com>