Re: [win-pv-devel] [PATCH] Use NonPagedPool for Active device properties

[Paul Durrant <Paul.Durrant@xxxxxxxxxx>]

> -----Original Message-----
> From: win-pv-devel [mailto:win-pv-devel-bounces@xxxxxxxxxxxxxxxxxxxx] On 
> Behalf Of Owen Smith
> Sent: 12 June 2019 16:53
> To: win-pv-devel@xxxxxxxxxxxxxxxxxxxx
> Cc: Owen Smith <owen.smith@xxxxxxxxxx>
> Subject: [win-pv-devel] [PATCH] Use NonPagedPool for Active device properties
> 
> ActiveDeviceId and ActiveInstanceId can be used at DISPATCH_LEVEL, and
> therefore cannot use PagedPool. When these values are returned via IRPs,
> the value is copied into a PagedPool buffer for the IRP to use.
> 
> Signed-off-by: Owen Smith <owen.smith@xxxxxxxxxx>

Acked-by: Paul Durrant <paul.durrant@xxxxxxxxxx>

> ---
>  src/xenfilt/driver.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/src/xenfilt/driver.c b/src/xenfilt/driver.c
> index ca53ad6..1b9ca98 100644
> --- a/src/xenfilt/driver.c
> +++ b/src/xenfilt/driver.c
> @@ -257,7 +257,7 @@ __DriverGetActive(
>          goto fail1;
> 
>      Length = Ansi[0].Length + sizeof (CHAR);
> -    *Value = __AllocatePoolWithTag(PagedPool, Length, 'TLIF');
> +    *Value = __AllocatePoolWithTag(NonPagedPool, Length, 'TLIF');
> 
>      status = STATUS_NO_MEMORY;
>      if (*Value == NULL)
> --
> 2.16.2.windows.1
> 
> 
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