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SubjectRe: [PATCH -v2 2/2] x86: Make Linux guest support optional
Hi Borislav,

On Fri, Jan 25, 2013 at 06:59:37PM +0100, Borislav Petkov wrote:
> diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
> index 8e1a9ec53003..cb467656e684 100644
> --- a/drivers/hv/vmbus_drv.c
> +++ b/drivers/hv/vmbus_drv.c
> @@ -724,7 +724,7 @@ static int __init hv_acpi_init(void)
> {
> int ret, t;
>
> - if (x86_hyper != &x86_hyper_ms_hyperv)
> + if (!x86_hyper || strncmp(x86_hyper->name, "VMware", 6))
> return -ENODEV;

I assume this is a typo as I doubt MS is using the same signature as we
do.

>
> init_completion(&probe_event);
> diff --git a/drivers/misc/vmw_balloon.c b/drivers/misc/vmw_balloon.c
> index cb56e270da11..85f15a6d8798 100644
> --- a/drivers/misc/vmw_balloon.c
> +++ b/drivers/misc/vmw_balloon.c
> @@ -786,7 +786,7 @@ static int __init vmballoon_init(void)
> * Check if we are running on VMware's hypervisor and bail out
> * if we are not.
> */
> - if (x86_hyper != &x86_hyper_vmware)
> + if (!x86_hyper || strncmp(x86_hyper->name, "VMware", 6))
> return -ENODEV;
>

I wonder why you decided to switch from address matching (which is quite
precise and would potentially allow adding signatures without needing
to change the drivers) to string matching?

Thanks,
Dmitry


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