On 29.01.2021 19:18, Andrew Cooper wrote:
> On 29/01/2021 09:46, Jan Beulich wrote:
>> On 29.01.2021 00:44, Andrew Cooper wrote:
>>> On 15/01/2021 16:12, Jan Beulich wrote:
On 12.01.2021 20:48, Andrew Cooper wrote:
> --- a/xen/arch/x86/mm.c
> +++ b/xen/arch/x86/mm.c
> @@ -4628,7 +4
On 29/01/2021 09:46, Jan Beulich wrote:
> On 29.01.2021 00:44, Andrew Cooper wrote:
>> On 15/01/2021 16:12, Jan Beulich wrote:
>>> On 12.01.2021 20:48, Andrew Cooper wrote:
--- a/xen/arch/x86/mm.c
+++ b/xen/arch/x86/mm.c
@@ -4628,7 +4628,6 @@ int arch_acquire_resource(struct domain *
On 29.01.2021 00:44, Andrew Cooper wrote:
> On 15/01/2021 16:12, Jan Beulich wrote:
>> On 12.01.2021 20:48, Andrew Cooper wrote:
>>> --- a/xen/arch/x86/mm.c
>>> +++ b/xen/arch/x86/mm.c
>>> @@ -4628,7 +4628,6 @@ int arch_acquire_resource(struct domain *d, unsigned
>>> int type,
>>> if ( id
On 15/01/2021 16:12, Jan Beulich wrote:
> On 12.01.2021 20:48, Andrew Cooper wrote:
>> --- a/xen/arch/x86/mm.c
>> +++ b/xen/arch/x86/mm.c
>> @@ -4628,7 +4628,6 @@ int arch_acquire_resource(struct domain *d, unsigned
>> int type,
>> if ( id != (unsigned int)ioservid )
>> break
On 12.01.2021 20:48, Andrew Cooper wrote:
> --- a/xen/arch/x86/mm.c
> +++ b/xen/arch/x86/mm.c
> @@ -4628,7 +4628,6 @@ int arch_acquire_resource(struct domain *d, unsigned
> int type,
> if ( id != (unsigned int)ioservid )
> break;
>
> -rc = 0;
> for ( i = 0;
A guest's default number of grant frames is 64, and XENMEM_acquire_resource
will reject an attempt to map more than 32 frames. This limit is caused by
the size of mfn_list[] on the stack.
Fix mapping of arbitrary size requests by looping over batches of 32 in
acquire_resource(), and using hyperca
