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Re: [PATCH 1/5] xen/memory: Introduce CONFIG_ARCH_ACQUIRE_RESOURCE

Hi Andrew,

On 28/07/2020 12:37, Andrew Cooper wrote:
New architectures shouldn't be forced to implement no-op stubs for unused

Introduce CONFIG_ARCH_ACQUIRE_RESOURCE which can be opted in to, and provide
compatibility logic in xen/mm.h

No functional change.

Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

With one question below:

Acked-by: Julien Grall <jgrall@xxxxxxxxxx>

diff --git a/xen/include/xen/mm.h b/xen/include/xen/mm.h
index 1061765bcd..1b2c1f6b32 100644
--- a/xen/include/xen/mm.h
+++ b/xen/include/xen/mm.h
@@ -685,4 +685,13 @@ static inline void put_page_alloc_ref(struct page_info 
+static inline int arch_acquire_resource(
+    struct domain *d, unsigned int type, unsigned int id, unsigned long frame,
+    unsigned int nr_frames, xen_pfn_t mfn_list[])

Any reason to change the way we indent the arguments?

+    return -EOPNOTSUPP;
  #endif /* __XEN_MM_H__ */


Julien Grall



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