Re: [PATCH V5 14/22] arm/ioreq: Introduce arch specific bits for IOREQ/DM features

[Julien Grall <julien@xxxxxxx>]

Hi Oleksandr,

On 27/01/2021 19:20, Oleksandr wrote:
 >  >>> So I think we may be able to drop the include from 
asm/hvm/domain.h
> (this would avoid to include it everywhere...).
>
> I have tried that, but other CUs use definitions from 
> public/hvm/dm_op.h, for example:
> p2m-pt.c: In function 'p2m_type_to_flags':
> p2m-pt.c:87:33: error: 'XEN_DMOP_IOREQ_MEM_ACCESS_WRITE' undeclared 
> (first use in this function)
>           if ( p2m->ioreq.flags & XEN_DMOP_IOREQ_MEM_ACCESS_WRITE )
>                                   ^
> So, I would prefer to leave it as is, please let me know if you think 
> otherwise.
AFAICT, there is only 2 places (p2m-pt.c and p2m-ept.c) that requires 
<public/hvm/dm_op.h> but doesn't directly include it. Folding the diff 
below in patch #4 should do the job:
diff --git a/xen/arch/x86/mm/p2m-ept.c b/xen/arch/x86/mm/p2m-ept.c
index 975ab403f235..23d411f01d2f 100644
--- a/xen/arch/x86/mm/p2m-ept.c
+++ b/xen/arch/x86/mm/p2m-ept.c
@@ -17,6 +17,7 @@

 #include <xen/domain_page.h>
 #include <xen/sched.h>
+#include <public/hvm/dm_op.h>
 #include <asm/altp2m.h>
 #include <asm/current.h>
 #include <asm/paging.h>
diff --git a/xen/arch/x86/mm/p2m-pt.c b/xen/arch/x86/mm/p2m-pt.c
index c43d5d0413a1..f2afcf49a368 100644
--- a/xen/arch/x86/mm/p2m-pt.c
+++ b/xen/arch/x86/mm/p2m-pt.c
@@ -27,6 +27,7 @@
 #include <xen/vm_event.h>
 #include <xen/event.h>
 #include <xen/trace.h>
+#include <public/hvm/dm_op.h>
 #include <public/vm_event.h>
 #include <asm/altp2m.h>
 #include <asm/domain.h>
diff --git a/xen/include/asm-x86/hvm/domain.h 
b/xen/include/asm-x86/hvm/domain.h
index 3b36c2f41fa1..f26c1a2e2d5f 100644
--- a/xen/include/asm-x86/hvm/domain.h
+++ b/xen/include/asm-x86/hvm/domain.h
@@ -28,8 +28,6 @@
 #include <asm/hvm/vmx/vmcs.h>
 #include <asm/hvm/svm/vmcb.h>

-#include <public/hvm/dm_op.h>
-
 #ifdef CONFIG_MEM_SHARING
 struct mem_sharing_domain
 {

You would then need to move the include of <public/hvm/dm_op.h> in 
<xen/dm.h> from this patch to patch #9.
Cheers,

--
Julien Grall