From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jaeyong Yoo Subject: [PATCH v5 2/6] xen/arm: Implement get_maximum_gpfn hypercall for arm Date: Wed, 06 Nov 2013 12:45:39 +0900 Message-ID: <00ab01cedaa2$a8f18240$fad486c0$%yoo@samsung.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0588180242913419747==" Return-path: Content-language: ko List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: xen-devel@lists.xen.org Cc: 'Eugene Fedotov' List-Id: xen-devel@lists.xenproject.org This is a multi-part message in MIME format. --===============0588180242913419747== Content-type: multipart/alternative; boundary="----=_NextPart_000_00AC_01CEDAEE.18D92A40" Content-language: ko This is a multi-part message in MIME format. ------=_NextPart_000_00AC_01CEDAEE.18D92A40 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit By using the memory map info in arch_domain (from set_memory_map hypercall) implement get_maximum_gpfn hypercall. Changes from v4: Use GUEST_RAM_BASE as the start physical address of guest RAM. And, purge set-memory-map patch Singed-off-by: Evgeny Fedotov --- xen/arch/arm/mm.c | 22 +++++++++++++++++++++- xen/include/asm-arm/mm.h | 2 ++ 2 files changed, 23 insertions(+), 1 deletion(-) diff --git a/xen/arch/arm/mm.c b/xen/arch/arm/mm.c index 123280e..3801f07 100644 --- a/xen/arch/arm/mm.c +++ b/xen/arch/arm/mm.c @@ -927,7 +927,11 @@ int page_is_ram_type(unsigned long mfn, unsigned long mem_type) unsigned long domain_get_maximum_gpfn(struct domain *d) { - return -ENOSYS; + paddr_t end; + + get_gma_start_end(d, NULL, &end); + + return (unsigned long) (end >> PAGE_SHIFT); } void share_xen_page_with_guest(struct page_info *page, @@ -1308,6 +1312,22 @@ int is_iomem_page(unsigned long mfn) return 1; return 0; } + +/* Guest RAM base */ +#define GUEST_RAM_BASE 0x80000000 +/* + * XXX: Use correct definition for RAM base when the following patch + * xen: arm: 64-bit guest support and domU FDT autogeneration + * will be upstreamed. + */ +void get_gma_start_end(struct domain *d, paddr_t *start, paddr_t *end) +{ + if ( start ) + *start = GUEST_RAM_BASE; + if ( end ) + *end = GUEST_RAM_BASE + ((paddr_t) d->max_pages << PAGE_SHIFT); +} + /* * Local variables: * mode: C diff --git a/xen/include/asm-arm/mm.h b/xen/include/asm-arm/mm.h index ce66099..c5cb3af 100644 --- a/xen/include/asm-arm/mm.h +++ b/xen/include/asm-arm/mm.h @@ -341,6 +341,8 @@ static inline void put_page_and_type(struct page_info *page) put_page(page); } +void get_gma_start_end(struct domain *d, paddr_t *start, paddr_t *end); + #endif /* __ARCH_ARM_MM__ */ /* * Local variables: -- 1.8.1.2 ------=_NextPart_000_00AC_01CEDAEE.18D92A40 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

By using the memory map info in arch_domain (from = set_memory_map hypercall)

implement get_maximum_gpfn = hypercall.

 

Changes from v4: Use GUEST_RAM_BASE as the start physical = address of guest

RAM. And, purge set-memory-map = patch

 

Singed-off-by: Evgeny Fedotov = <e.fedotov@samsung.com>

---

= xen/arch/arm/mm.c        | 22 = +++++++++++++++++++++-

xen/include/asm-arm/mm.h |  2 = ++

2 files = changed, 23 insertions(+), 1 deletion(-)

 

diff --git a/xen/arch/arm/mm.c = b/xen/arch/arm/mm.c

index 123280e..3801f07 100644

--- = a/xen/arch/arm/mm.c

+++ b/xen/arch/arm/mm.c

@@ -927,7 +927,11 @@ int = page_is_ram_type(unsigned long mfn, unsigned long = mem_type)

 

unsigned long domain_get_maximum_gpfn(struct domain = *d)

= {

-    return -ENOSYS;

+    paddr_t = end;

+

+    get_gma_start_end(d, NULL, = &end);

+

+    return (unsigned long) (end >> = PAGE_SHIFT);

}

 

void share_xen_page_with_guest(struct page_info = *page,

@@ = -1308,6 +1312,22 @@ int is_iomem_page(unsigned long = mfn)

         return = 1;

     return 0;

}

+

+/* Guest RAM base = */

+#define = GUEST_RAM_BASE 0x80000000

+/*

+ *  XXX: Use correct = definition for RAM base when the following patch

+ *  xen: arm: 64-bit guest = support and domU FDT autogeneration

+ *  will be = upstreamed.

+ */

+void get_gma_start_end(struct domain *d, paddr_t *start, = paddr_t *end)

+{

+    if ( start )

+        *start =3D = GUEST_RAM_BASE;

+    if ( end )

+        *end =3D = GUEST_RAM_BASE + ((paddr_t) d->max_pages << = PAGE_SHIFT);

+}

+

/*

  * Local variables:

  * mode: = C

diff = --git a/xen/include/asm-arm/mm.h = b/xen/include/asm-arm/mm.h

index ce66099..c5cb3af = 100644

--- = a/xen/include/asm-arm/mm.h

+++ = b/xen/include/asm-arm/mm.h

@@ -341,6 +341,8 @@ static inline = void put_page_and_type(struct page_info *page)

     = put_page(page);

}

 

+void get_gma_start_end(struct domain *d, paddr_t *start, = paddr_t *end);

+

#endif /*  __ARCH_ARM_MM__ */

/*

  * Local = variables:

--

1.8.1.2

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