From: Julien Grall <julien.grall@arm.com>
To: xen-devel@lists.xen.org
Cc: Julien Grall <julien.grall@arm.com>, sstabellini@kernel.org
Subject: [PATCH v6 13/14] xen/arm: p2m: Use typesafe gfn for {max, lowest}_mapped_gfn
Date: Wed, 6 Jul 2016 14:01:12 +0100 [thread overview]
Message-ID: <1467810073-27971-14-git-send-email-julien.grall@arm.com> (raw)
In-Reply-To: <1467810073-27971-1-git-send-email-julien.grall@arm.com>
Signed-off-by: Julien Grall <julien.grall@arm.com>
Acked-by: Stefano Stabellini <sstabellini@kernel.org>
---
Changes in v6:
- Add Stefano's acked-by
Changes in v4:
- Patch added
---
xen/arch/arm/mm.c | 2 +-
xen/arch/arm/p2m.c | 18 +++++++++---------
xen/include/asm-arm/p2m.h | 4 ++--
3 files changed, 12 insertions(+), 12 deletions(-)
diff --git a/xen/arch/arm/mm.c b/xen/arch/arm/mm.c
index b5fc034..4e256c2 100644
--- a/xen/arch/arm/mm.c
+++ b/xen/arch/arm/mm.c
@@ -1004,7 +1004,7 @@ int page_is_ram_type(unsigned long mfn, unsigned long mem_type)
unsigned long domain_get_maximum_gpfn(struct domain *d)
{
- return d->arch.p2m.max_mapped_gfn;
+ return gfn_x(d->arch.p2m.max_mapped_gfn);
}
void share_xen_page_with_guest(struct page_info *page,
diff --git a/xen/arch/arm/p2m.c b/xen/arch/arm/p2m.c
index b98eff4..c7f6766 100644
--- a/xen/arch/arm/p2m.c
+++ b/xen/arch/arm/p2m.c
@@ -976,7 +976,7 @@ static int apply_p2m_changes(struct domain *d,
* This is set in preempt_count_limit.
*
*/
- p2m->lowest_mapped_gfn = addr >> PAGE_SHIFT;
+ p2m->lowest_mapped_gfn = _gfn(addr >> PAGE_SHIFT);
rc = -ERESTART;
goto out;
@@ -1117,8 +1117,8 @@ static int apply_p2m_changes(struct domain *d,
if ( op == INSERT )
{
- p2m->max_mapped_gfn = max(p2m->max_mapped_gfn, egfn);
- p2m->lowest_mapped_gfn = min(p2m->lowest_mapped_gfn, sgfn);
+ p2m->max_mapped_gfn = gfn_max(p2m->max_mapped_gfn, _gfn(egfn));
+ p2m->lowest_mapped_gfn = gfn_min(p2m->lowest_mapped_gfn, _gfn(sgfn));
}
rc = 0;
@@ -1383,8 +1383,8 @@ int p2m_init(struct domain *d)
p2m->root = NULL;
- p2m->max_mapped_gfn = 0;
- p2m->lowest_mapped_gfn = ULONG_MAX;
+ p2m->max_mapped_gfn = _gfn(0);
+ p2m->lowest_mapped_gfn = _gfn(ULONG_MAX);
p2m->default_access = p2m_access_rwx;
p2m->mem_access_enabled = false;
@@ -1401,8 +1401,8 @@ int relinquish_p2m_mapping(struct domain *d)
struct p2m_domain *p2m = &d->arch.p2m;
return apply_p2m_changes(d, RELINQUISH,
- pfn_to_paddr(p2m->lowest_mapped_gfn),
- pfn_to_paddr(p2m->max_mapped_gfn),
+ pfn_to_paddr(gfn_x(p2m->lowest_mapped_gfn)),
+ pfn_to_paddr(gfn_x(p2m->max_mapped_gfn)),
pfn_to_paddr(mfn_x(INVALID_MFN)),
MATTR_MEM, 0, p2m_invalid,
d->arch.p2m.default_access);
@@ -1413,8 +1413,8 @@ int p2m_cache_flush(struct domain *d, gfn_t start, unsigned long nr)
struct p2m_domain *p2m = &d->arch.p2m;
gfn_t end = gfn_add(start, nr);
- start = gfn_max(start, _gfn(p2m->lowest_mapped_gfn));
- end = gfn_min(end, _gfn(p2m->max_mapped_gfn));
+ start = gfn_max(start, p2m->lowest_mapped_gfn);
+ end = gfn_min(end, p2m->max_mapped_gfn);
return apply_p2m_changes(d, CACHEFLUSH,
pfn_to_paddr(gfn_x(start)),
diff --git a/xen/include/asm-arm/p2m.h b/xen/include/asm-arm/p2m.h
index 6e258b9..34096bc 100644
--- a/xen/include/asm-arm/p2m.h
+++ b/xen/include/asm-arm/p2m.h
@@ -34,13 +34,13 @@ struct p2m_domain {
/* Highest guest frame that's ever been mapped in the p2m
* Only takes into account ram and foreign mapping
*/
- unsigned long max_mapped_gfn;
+ gfn_t max_mapped_gfn;
/* Lowest mapped gfn in the p2m. When releasing mapped gfn's in a
* preemptible manner this is update to track recall where to
* resume the search. Apart from during teardown this can only
* decrease. */
- unsigned long lowest_mapped_gfn;
+ gfn_t lowest_mapped_gfn;
/* Gather some statistics for information purposes only */
struct {
--
1.9.1
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next prev parent reply other threads:[~2016-07-06 13:01 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-06 13:00 [PATCH v6 00/14] xen/arm: Use the typesafes gfn and mfn Julien Grall
2016-07-06 13:01 ` [PATCH v6 01/14] xen: Use the typesafe mfn and gfn in map_mmio_regions Julien Grall
2016-07-06 13:01 ` [PATCH v6 02/14] xen/passthrough: x86: Use INVALID_GFN rather than INVALID_MFN Julien Grall
2016-07-06 13:01 ` [PATCH v6 03/14] xen: Use a typesafe to define INVALID_MFN Julien Grall
2016-07-06 13:04 ` Julien Grall
2016-07-08 22:01 ` Elena Ufimtseva
2016-07-08 19:20 ` Andrew Cooper
2016-07-09 0:21 ` Elena Ufimtseva
2016-07-08 19:39 ` Julien Grall
2016-07-06 13:01 ` [PATCH v6 04/14] xen: Use a typesafe to define INVALID_GFN Julien Grall
2016-07-06 13:05 ` Julien Grall
2016-07-08 22:05 ` Elena Ufimtseva
2016-07-06 13:01 ` [PATCH v6 05/14] xen/arm: Rework the interface of p2m_lookup and use typesafe gfn and mfn Julien Grall
2016-07-06 13:01 ` [PATCH v6 06/14] xen/arm: Rework the interface of p2m_cache_flush and use typesafe gfn Julien Grall
2016-07-06 13:01 ` [PATCH v6 07/14] xen/arm: map_regions_rw_cache: Map the region with p2m->default_access Julien Grall
2016-07-06 13:01 ` [PATCH v6 08/14] xen/arm: dom0_build: Remove dead code in allocate_memory Julien Grall
2016-07-06 13:01 ` [PATCH v6 09/14] xen/arm: p2m: Remove unused operation ALLOCATE Julien Grall
2016-07-06 13:01 ` [PATCH v6 10/14] xen/arm: Use the typesafes mfn and gfn in map_dev_mmio_region Julien Grall
2016-07-06 13:01 ` [PATCH v6 11/14] xen/arm: Use the typesafes mfn and gfn in map_regions_rw_cache Julien Grall
2016-07-06 13:01 ` [PATCH v6 12/14] xen/arm: p2m: Introduce helpers to insert and remove mapping Julien Grall
2016-07-11 16:16 ` Julien Grall
2016-07-06 13:01 ` Julien Grall [this message]
2016-07-06 13:01 ` [PATCH v6 14/14] xen/arm: p2m: Rework the interface of apply_p2m_changes and use typesafe Julien Grall
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