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authorJuergen Gross <jgross@suse.com>2015-09-04 14:50:33 +0200
committerDavid Vrabel <david.vrabel@citrix.com>2015-09-28 15:48:52 +0200
commit24f775a6605a8ffc697c0767fc7ea85656ddb958 (patch)
tree405762fa77d7b70171aaeb732f9f6cb808c6f3dd /arch
parentLinux 4.3-rc3 (diff)
downloadlinux-24f775a6605a8ffc697c0767fc7ea85656ddb958.tar.xz
linux-24f775a6605a8ffc697c0767fc7ea85656ddb958.zip
xen: use correct type for HYPERVISOR_memory_op()
HYPERVISOR_memory_op() is defined to return an "int" value. This is wrong, as the Xen hypervisor will return "long". The sub-function XENMEM_maximum_reservation returns the maximum number of pages for the current domain. An int will overflow for a domain configured with 8TB of memory or more. Correct this by using the correct type. Signed-off-by: Juergen Gross <jgross@suse.com> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/include/asm/xen/hypercall.h4
-rw-r--r--arch/x86/xen/setup.c2
2 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/include/asm/xen/hypercall.h b/arch/x86/include/asm/xen/hypercall.h
index 83aea8055119..4c20dd333412 100644
--- a/arch/x86/include/asm/xen/hypercall.h
+++ b/arch/x86/include/asm/xen/hypercall.h
@@ -336,10 +336,10 @@ HYPERVISOR_update_descriptor(u64 ma, u64 desc)
return _hypercall4(int, update_descriptor, ma, ma>>32, desc, desc>>32);
}
-static inline int
+static inline long
HYPERVISOR_memory_op(unsigned int cmd, void *arg)
{
- return _hypercall2(int, memory_op, cmd, arg);
+ return _hypercall2(long, memory_op, cmd, arg);
}
static inline int
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index f5ef6746d47a..4ebfcecc2a8b 100644
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -548,7 +548,7 @@ static unsigned long __init xen_get_max_pages(void)
{
unsigned long max_pages, limit;
domid_t domid = DOMID_SELF;
- int ret;
+ long ret;
limit = xen_get_pages_limit();
max_pages = limit;