* [PATCH] x86/altp2m: move altp2m_get_effective_entry() under CONFIG_HVM
@ 2019-05-14 16:13 Razvan Cojocaru
2019-05-14 16:13 ` [Xen-devel] " Razvan Cojocaru
` (2 more replies)
0 siblings, 3 replies; 10+ messages in thread
From: Razvan Cojocaru @ 2019-05-14 16:13 UTC (permalink / raw)
To: xen-devel
Cc: wei.liu2, Razvan Cojocaru, george.dunlap, andrew.cooper3,
jbeulich, roger.pau
All its callers live inside #ifdef CONFIG_HVM sections.
Signed-off-by: Razvan Cojocaru <rcojocaru@bitdefender.com>
---
xen/arch/x86/mm/p2m.c | 72 +++++++++++++++++++++++------------------------
xen/include/asm-x86/p2m.h | 2 ++
2 files changed, 38 insertions(+), 36 deletions(-)
diff --git a/xen/arch/x86/mm/p2m.c b/xen/arch/x86/mm/p2m.c
index cc6661e..57c5eed 100644
--- a/xen/arch/x86/mm/p2m.c
+++ b/xen/arch/x86/mm/p2m.c
@@ -478,42 +478,6 @@ void p2m_unlock_and_tlb_flush(struct p2m_domain *p2m)
mm_write_unlock(&p2m->lock);
}
-int altp2m_get_effective_entry(struct p2m_domain *ap2m, gfn_t gfn, mfn_t *mfn,
- p2m_type_t *t, p2m_access_t *a,
- bool prepopulate)
-{
- *mfn = ap2m->get_entry(ap2m, gfn, t, a, 0, NULL, NULL);
-
- /* Check host p2m if no valid entry in alternate */
- if ( !mfn_valid(*mfn) && !p2m_is_hostp2m(ap2m) )
- {
- struct p2m_domain *hp2m = p2m_get_hostp2m(ap2m->domain);
- unsigned int page_order;
- int rc;
-
- *mfn = __get_gfn_type_access(hp2m, gfn_x(gfn), t, a,
- P2M_ALLOC | P2M_UNSHARE, &page_order, 0);
-
- rc = -ESRCH;
- if ( !mfn_valid(*mfn) || *t != p2m_ram_rw )
- return rc;
-
- /* If this is a superpage, copy that first */
- if ( prepopulate && page_order != PAGE_ORDER_4K )
- {
- unsigned long mask = ~((1UL << page_order) - 1);
- gfn_t gfn_aligned = _gfn(gfn_x(gfn) & mask);
- mfn_t mfn_aligned = _mfn(mfn_x(*mfn) & mask);
-
- rc = ap2m->set_entry(ap2m, gfn_aligned, mfn_aligned, page_order, *t, *a, 1);
- if ( rc )
- return rc;
- }
- }
-
- return 0;
-}
-
mfn_t __get_gfn_type_access(struct p2m_domain *p2m, unsigned long gfn_l,
p2m_type_t *t, p2m_access_t *a, p2m_query_t q,
unsigned int *page_order, bool_t locked)
@@ -2378,6 +2342,42 @@ int unmap_mmio_regions(struct domain *d,
#ifdef CONFIG_HVM
+int altp2m_get_effective_entry(struct p2m_domain *ap2m, gfn_t gfn, mfn_t *mfn,
+ p2m_type_t *t, p2m_access_t *a,
+ bool prepopulate)
+{
+ *mfn = ap2m->get_entry(ap2m, gfn, t, a, 0, NULL, NULL);
+
+ /* Check host p2m if no valid entry in alternate */
+ if ( !mfn_valid(*mfn) && !p2m_is_hostp2m(ap2m) )
+ {
+ struct p2m_domain *hp2m = p2m_get_hostp2m(ap2m->domain);
+ unsigned int page_order;
+ int rc;
+
+ *mfn = __get_gfn_type_access(hp2m, gfn_x(gfn), t, a,
+ P2M_ALLOC | P2M_UNSHARE, &page_order, 0);
+
+ rc = -ESRCH;
+ if ( !mfn_valid(*mfn) || *t != p2m_ram_rw )
+ return rc;
+
+ /* If this is a superpage, copy that first */
+ if ( prepopulate && page_order != PAGE_ORDER_4K )
+ {
+ unsigned long mask = ~((1UL << page_order) - 1);
+ gfn_t gfn_aligned = _gfn(gfn_x(gfn) & mask);
+ mfn_t mfn_aligned = _mfn(mfn_x(*mfn) & mask);
+
+ rc = ap2m->set_entry(ap2m, gfn_aligned, mfn_aligned, page_order, *t, *a, 1);
+ if ( rc )
+ return rc;
+ }
+ }
+
+ return 0;
+}
+
void p2m_altp2m_check(struct vcpu *v, uint16_t idx)
{
if ( altp2m_active(v->domain) )
diff --git a/xen/include/asm-x86/p2m.h b/xen/include/asm-x86/p2m.h
index 2d0bda1..7e71bf0 100644
--- a/xen/include/asm-x86/p2m.h
+++ b/xen/include/asm-x86/p2m.h
@@ -514,6 +514,7 @@ static inline unsigned long mfn_to_gfn(struct domain *d, mfn_t mfn)
return mfn_x(mfn);
}
+#ifdef CONFIG_HVM
#define AP2MGET_prepopulate true
#define AP2MGET_query false
@@ -525,6 +526,7 @@ static inline unsigned long mfn_to_gfn(struct domain *d, mfn_t mfn)
int altp2m_get_effective_entry(struct p2m_domain *ap2m, gfn_t gfn, mfn_t *mfn,
p2m_type_t *t, p2m_access_t *a,
bool prepopulate);
+#endif
/* Deadlock-avoidance scheme when calling get_gfn on different gfn's */
struct two_gfns {
--
2.7.4
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^ permalink raw reply related [flat|nested] 10+ messages in thread
* [Xen-devel] [PATCH] x86/altp2m: move altp2m_get_effective_entry() under CONFIG_HVM
2019-05-14 16:13 [PATCH] x86/altp2m: move altp2m_get_effective_entry() under CONFIG_HVM Razvan Cojocaru
@ 2019-05-14 16:13 ` Razvan Cojocaru
2019-05-14 16:27 ` Jan Beulich
2019-05-15 6:53 ` Wei Liu
2 siblings, 0 replies; 10+ messages in thread
From: Razvan Cojocaru @ 2019-05-14 16:13 UTC (permalink / raw)
To: xen-devel
Cc: wei.liu2, Razvan Cojocaru, george.dunlap, andrew.cooper3,
jbeulich, roger.pau
All its callers live inside #ifdef CONFIG_HVM sections.
Signed-off-by: Razvan Cojocaru <rcojocaru@bitdefender.com>
---
xen/arch/x86/mm/p2m.c | 72 +++++++++++++++++++++++------------------------
xen/include/asm-x86/p2m.h | 2 ++
2 files changed, 38 insertions(+), 36 deletions(-)
diff --git a/xen/arch/x86/mm/p2m.c b/xen/arch/x86/mm/p2m.c
index cc6661e..57c5eed 100644
--- a/xen/arch/x86/mm/p2m.c
+++ b/xen/arch/x86/mm/p2m.c
@@ -478,42 +478,6 @@ void p2m_unlock_and_tlb_flush(struct p2m_domain *p2m)
mm_write_unlock(&p2m->lock);
}
-int altp2m_get_effective_entry(struct p2m_domain *ap2m, gfn_t gfn, mfn_t *mfn,
- p2m_type_t *t, p2m_access_t *a,
- bool prepopulate)
-{
- *mfn = ap2m->get_entry(ap2m, gfn, t, a, 0, NULL, NULL);
-
- /* Check host p2m if no valid entry in alternate */
- if ( !mfn_valid(*mfn) && !p2m_is_hostp2m(ap2m) )
- {
- struct p2m_domain *hp2m = p2m_get_hostp2m(ap2m->domain);
- unsigned int page_order;
- int rc;
-
- *mfn = __get_gfn_type_access(hp2m, gfn_x(gfn), t, a,
- P2M_ALLOC | P2M_UNSHARE, &page_order, 0);
-
- rc = -ESRCH;
- if ( !mfn_valid(*mfn) || *t != p2m_ram_rw )
- return rc;
-
- /* If this is a superpage, copy that first */
- if ( prepopulate && page_order != PAGE_ORDER_4K )
- {
- unsigned long mask = ~((1UL << page_order) - 1);
- gfn_t gfn_aligned = _gfn(gfn_x(gfn) & mask);
- mfn_t mfn_aligned = _mfn(mfn_x(*mfn) & mask);
-
- rc = ap2m->set_entry(ap2m, gfn_aligned, mfn_aligned, page_order, *t, *a, 1);
- if ( rc )
- return rc;
- }
- }
-
- return 0;
-}
-
mfn_t __get_gfn_type_access(struct p2m_domain *p2m, unsigned long gfn_l,
p2m_type_t *t, p2m_access_t *a, p2m_query_t q,
unsigned int *page_order, bool_t locked)
@@ -2378,6 +2342,42 @@ int unmap_mmio_regions(struct domain *d,
#ifdef CONFIG_HVM
+int altp2m_get_effective_entry(struct p2m_domain *ap2m, gfn_t gfn, mfn_t *mfn,
+ p2m_type_t *t, p2m_access_t *a,
+ bool prepopulate)
+{
+ *mfn = ap2m->get_entry(ap2m, gfn, t, a, 0, NULL, NULL);
+
+ /* Check host p2m if no valid entry in alternate */
+ if ( !mfn_valid(*mfn) && !p2m_is_hostp2m(ap2m) )
+ {
+ struct p2m_domain *hp2m = p2m_get_hostp2m(ap2m->domain);
+ unsigned int page_order;
+ int rc;
+
+ *mfn = __get_gfn_type_access(hp2m, gfn_x(gfn), t, a,
+ P2M_ALLOC | P2M_UNSHARE, &page_order, 0);
+
+ rc = -ESRCH;
+ if ( !mfn_valid(*mfn) || *t != p2m_ram_rw )
+ return rc;
+
+ /* If this is a superpage, copy that first */
+ if ( prepopulate && page_order != PAGE_ORDER_4K )
+ {
+ unsigned long mask = ~((1UL << page_order) - 1);
+ gfn_t gfn_aligned = _gfn(gfn_x(gfn) & mask);
+ mfn_t mfn_aligned = _mfn(mfn_x(*mfn) & mask);
+
+ rc = ap2m->set_entry(ap2m, gfn_aligned, mfn_aligned, page_order, *t, *a, 1);
+ if ( rc )
+ return rc;
+ }
+ }
+
+ return 0;
+}
+
void p2m_altp2m_check(struct vcpu *v, uint16_t idx)
{
if ( altp2m_active(v->domain) )
diff --git a/xen/include/asm-x86/p2m.h b/xen/include/asm-x86/p2m.h
index 2d0bda1..7e71bf0 100644
--- a/xen/include/asm-x86/p2m.h
+++ b/xen/include/asm-x86/p2m.h
@@ -514,6 +514,7 @@ static inline unsigned long mfn_to_gfn(struct domain *d, mfn_t mfn)
return mfn_x(mfn);
}
+#ifdef CONFIG_HVM
#define AP2MGET_prepopulate true
#define AP2MGET_query false
@@ -525,6 +526,7 @@ static inline unsigned long mfn_to_gfn(struct domain *d, mfn_t mfn)
int altp2m_get_effective_entry(struct p2m_domain *ap2m, gfn_t gfn, mfn_t *mfn,
p2m_type_t *t, p2m_access_t *a,
bool prepopulate);
+#endif
/* Deadlock-avoidance scheme when calling get_gfn on different gfn's */
struct two_gfns {
--
2.7.4
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^ permalink raw reply related [flat|nested] 10+ messages in thread
* Re: [PATCH] x86/altp2m: move altp2m_get_effective_entry() under CONFIG_HVM
2019-05-14 16:13 [PATCH] x86/altp2m: move altp2m_get_effective_entry() under CONFIG_HVM Razvan Cojocaru
2019-05-14 16:13 ` [Xen-devel] " Razvan Cojocaru
@ 2019-05-14 16:27 ` Jan Beulich
2019-05-14 16:27 ` [Xen-devel] " Jan Beulich
2019-05-15 6:53 ` Wei Liu
2 siblings, 1 reply; 10+ messages in thread
From: Jan Beulich @ 2019-05-14 16:27 UTC (permalink / raw)
To: Razvan Cojocaru
Cc: George Dunlap, Andrew Cooper, Wei Liu, xen-devel, Roger Pau Monne
>>> On 14.05.19 at 18:13, <rcojocaru@bitdefender.com> wrote:
> All its callers live inside #ifdef CONFIG_HVM sections.
>
> Signed-off-by: Razvan Cojocaru <rcojocaru@bitdefender.com>
Thanks!
> --- a/xen/include/asm-x86/p2m.h
> +++ b/xen/include/asm-x86/p2m.h
> @@ -514,6 +514,7 @@ static inline unsigned long mfn_to_gfn(struct domain *d, mfn_t mfn)
> return mfn_x(mfn);
> }
>
> +#ifdef CONFIG_HVM
> #define AP2MGET_prepopulate true
> #define AP2MGET_query false
>
> @@ -525,6 +526,7 @@ static inline unsigned long mfn_to_gfn(struct domain *d, mfn_t mfn)
> int altp2m_get_effective_entry(struct p2m_domain *ap2m, gfn_t gfn, mfn_t *mfn,
> p2m_type_t *t, p2m_access_t *a,
> bool prepopulate);
> +#endif
>
> /* Deadlock-avoidance scheme when calling get_gfn on different gfn's */
> struct two_gfns {
I don't think these adjustments are strictly needed, but at least for
now they of course also don't hurt.
Jan
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [Xen-devel] [PATCH] x86/altp2m: move altp2m_get_effective_entry() under CONFIG_HVM
2019-05-14 16:27 ` Jan Beulich
@ 2019-05-14 16:27 ` Jan Beulich
0 siblings, 0 replies; 10+ messages in thread
From: Jan Beulich @ 2019-05-14 16:27 UTC (permalink / raw)
To: Razvan Cojocaru
Cc: George Dunlap, Andrew Cooper, Wei Liu, xen-devel, Roger Pau Monne
>>> On 14.05.19 at 18:13, <rcojocaru@bitdefender.com> wrote:
> All its callers live inside #ifdef CONFIG_HVM sections.
>
> Signed-off-by: Razvan Cojocaru <rcojocaru@bitdefender.com>
Thanks!
> --- a/xen/include/asm-x86/p2m.h
> +++ b/xen/include/asm-x86/p2m.h
> @@ -514,6 +514,7 @@ static inline unsigned long mfn_to_gfn(struct domain *d, mfn_t mfn)
> return mfn_x(mfn);
> }
>
> +#ifdef CONFIG_HVM
> #define AP2MGET_prepopulate true
> #define AP2MGET_query false
>
> @@ -525,6 +526,7 @@ static inline unsigned long mfn_to_gfn(struct domain *d, mfn_t mfn)
> int altp2m_get_effective_entry(struct p2m_domain *ap2m, gfn_t gfn, mfn_t *mfn,
> p2m_type_t *t, p2m_access_t *a,
> bool prepopulate);
> +#endif
>
> /* Deadlock-avoidance scheme when calling get_gfn on different gfn's */
> struct two_gfns {
I don't think these adjustments are strictly needed, but at least for
now they of course also don't hurt.
Jan
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https://lists.xenproject.org/mailman/listinfo/xen-devel
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH] x86/altp2m: move altp2m_get_effective_entry() under CONFIG_HVM
2019-05-14 16:13 [PATCH] x86/altp2m: move altp2m_get_effective_entry() under CONFIG_HVM Razvan Cojocaru
2019-05-14 16:13 ` [Xen-devel] " Razvan Cojocaru
2019-05-14 16:27 ` Jan Beulich
@ 2019-05-15 6:53 ` Wei Liu
2019-05-15 6:53 ` [Xen-devel] " Wei Liu
2019-05-15 8:55 ` George Dunlap
2 siblings, 2 replies; 10+ messages in thread
From: Wei Liu @ 2019-05-15 6:53 UTC (permalink / raw)
To: Razvan Cojocaru
Cc: wei.liu2, george.dunlap, andrew.cooper3, jbeulich, xen-devel, roger.pau
On Tue, May 14, 2019 at 07:13:57PM +0300, Razvan Cojocaru wrote:
> All its callers live inside #ifdef CONFIG_HVM sections.
>
> Signed-off-by: Razvan Cojocaru <rcojocaru@bitdefender.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [Xen-devel] [PATCH] x86/altp2m: move altp2m_get_effective_entry() under CONFIG_HVM
2019-05-15 6:53 ` Wei Liu
@ 2019-05-15 6:53 ` Wei Liu
2019-05-15 8:55 ` George Dunlap
1 sibling, 0 replies; 10+ messages in thread
From: Wei Liu @ 2019-05-15 6:53 UTC (permalink / raw)
To: Razvan Cojocaru
Cc: wei.liu2, george.dunlap, andrew.cooper3, jbeulich, xen-devel, roger.pau
On Tue, May 14, 2019 at 07:13:57PM +0300, Razvan Cojocaru wrote:
> All its callers live inside #ifdef CONFIG_HVM sections.
>
> Signed-off-by: Razvan Cojocaru <rcojocaru@bitdefender.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
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https://lists.xenproject.org/mailman/listinfo/xen-devel
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH] x86/altp2m: move altp2m_get_effective_entry() under CONFIG_HVM
2019-05-15 6:53 ` Wei Liu
2019-05-15 6:53 ` [Xen-devel] " Wei Liu
@ 2019-05-15 8:55 ` George Dunlap
2019-05-15 8:55 ` [Xen-devel] " George Dunlap
2019-05-15 9:28 ` Wei Liu
1 sibling, 2 replies; 10+ messages in thread
From: George Dunlap @ 2019-05-15 8:55 UTC (permalink / raw)
To: Wei Liu, Razvan Cojocaru
Cc: george.dunlap, xen-devel, roger.pau, jbeulich, andrew.cooper3
On 5/15/19 7:53 AM, Wei Liu wrote:
> On Tue, May 14, 2019 at 07:13:57PM +0300, Razvan Cojocaru wrote:
>> All its callers live inside #ifdef CONFIG_HVM sections.
>>
>> Signed-off-by: Razvan Cojocaru <rcojocaru@bitdefender.com>
>
> Reviewed-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: George Dunlap <george.dunlap@citrix.com>
_______________________________________________
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [Xen-devel] [PATCH] x86/altp2m: move altp2m_get_effective_entry() under CONFIG_HVM
2019-05-15 8:55 ` George Dunlap
@ 2019-05-15 8:55 ` George Dunlap
2019-05-15 9:28 ` Wei Liu
1 sibling, 0 replies; 10+ messages in thread
From: George Dunlap @ 2019-05-15 8:55 UTC (permalink / raw)
To: Wei Liu, Razvan Cojocaru
Cc: george.dunlap, xen-devel, roger.pau, jbeulich, andrew.cooper3
On 5/15/19 7:53 AM, Wei Liu wrote:
> On Tue, May 14, 2019 at 07:13:57PM +0300, Razvan Cojocaru wrote:
>> All its callers live inside #ifdef CONFIG_HVM sections.
>>
>> Signed-off-by: Razvan Cojocaru <rcojocaru@bitdefender.com>
>
> Reviewed-by: Wei Liu <wei.liu2@citrix.com>
Acked-by: George Dunlap <george.dunlap@citrix.com>
_______________________________________________
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH] x86/altp2m: move altp2m_get_effective_entry() under CONFIG_HVM
2019-05-15 8:55 ` George Dunlap
2019-05-15 8:55 ` [Xen-devel] " George Dunlap
@ 2019-05-15 9:28 ` Wei Liu
2019-05-15 9:28 ` [Xen-devel] " Wei Liu
1 sibling, 1 reply; 10+ messages in thread
From: Wei Liu @ 2019-05-15 9:28 UTC (permalink / raw)
To: George Dunlap
Cc: Wei Liu, Razvan Cojocaru, george.dunlap, andrew.cooper3,
jbeulich, xen-devel, roger.pau
On Wed, May 15, 2019 at 09:55:30AM +0100, George Dunlap wrote:
> On 5/15/19 7:53 AM, Wei Liu wrote:
> > On Tue, May 14, 2019 at 07:13:57PM +0300, Razvan Cojocaru wrote:
> >> All its callers live inside #ifdef CONFIG_HVM sections.
> >>
> >> Signed-off-by: Razvan Cojocaru <rcojocaru@bitdefender.com>
> >
> > Reviewed-by: Wei Liu <wei.liu2@citrix.com>
>
> Acked-by: George Dunlap <george.dunlap@citrix.com>
Applied.
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [Xen-devel] [PATCH] x86/altp2m: move altp2m_get_effective_entry() under CONFIG_HVM
2019-05-15 9:28 ` Wei Liu
@ 2019-05-15 9:28 ` Wei Liu
0 siblings, 0 replies; 10+ messages in thread
From: Wei Liu @ 2019-05-15 9:28 UTC (permalink / raw)
To: George Dunlap
Cc: Wei Liu, Razvan Cojocaru, george.dunlap, andrew.cooper3,
jbeulich, xen-devel, roger.pau
On Wed, May 15, 2019 at 09:55:30AM +0100, George Dunlap wrote:
> On 5/15/19 7:53 AM, Wei Liu wrote:
> > On Tue, May 14, 2019 at 07:13:57PM +0300, Razvan Cojocaru wrote:
> >> All its callers live inside #ifdef CONFIG_HVM sections.
> >>
> >> Signed-off-by: Razvan Cojocaru <rcojocaru@bitdefender.com>
> >
> > Reviewed-by: Wei Liu <wei.liu2@citrix.com>
>
> Acked-by: George Dunlap <george.dunlap@citrix.com>
Applied.
_______________________________________________
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https://lists.xenproject.org/mailman/listinfo/xen-devel
^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2019-05-15 9:29 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-05-14 16:13 [PATCH] x86/altp2m: move altp2m_get_effective_entry() under CONFIG_HVM Razvan Cojocaru
2019-05-14 16:13 ` [Xen-devel] " Razvan Cojocaru
2019-05-14 16:27 ` Jan Beulich
2019-05-14 16:27 ` [Xen-devel] " Jan Beulich
2019-05-15 6:53 ` Wei Liu
2019-05-15 6:53 ` [Xen-devel] " Wei Liu
2019-05-15 8:55 ` George Dunlap
2019-05-15 8:55 ` [Xen-devel] " George Dunlap
2019-05-15 9:28 ` Wei Liu
2019-05-15 9:28 ` [Xen-devel] " Wei Liu
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