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Re: [PATCH] acpi: cpuhp: fix guest-visible maximum access size to the le


From: Igor Mammedov
Subject: Re: [PATCH] acpi: cpuhp: fix guest-visible maximum access size to the legacy reg block
Date: Wed, 4 Jan 2023 11:38:22 +0100

On Wed, 4 Jan 2023 10:34:09 +0100
Philippe Mathieu-Daudé <philmd@linaro.org> wrote:

> On 4/1/23 10:01, Laszlo Ersek wrote:
[...]
> > diff --git a/hw/acpi/cpu_hotplug.c b/hw/acpi/cpu_hotplug.c
> > index 53654f863830..ff14c3f4106f 100644
> > --- a/hw/acpi/cpu_hotplug.c
> > +++ b/hw/acpi/cpu_hotplug.c
> > @@ -52,6 +52,9 @@ static const MemoryRegionOps AcpiCpuHotplug_ops = {
> >       .endianness = DEVICE_LITTLE_ENDIAN,
> >       .valid = {
> >           .min_access_size = 1,
> > +        .max_access_size = 4,
> > +    },
> > +    .impl = {
> >           .max_access_size = 1,  
> 
> Arguably:
> Fixes: b8622725cf ("acpi_piix4: Add infrastructure to send CPU hot-plug 
> GPE to guest")

nope, this one is correct, as legacy interface used 1 byte access only

> 
> >       },
> >   };  





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