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| author | Juergen Gross | 2015-09-04 14:50:33 +0200 |
|---|---|---|
| committer | David Vrabel | 2015-09-28 15:48:52 +0200 |
| commit | 24f775a6605a8ffc697c0767fc7ea85656ddb958 (patch) | |
| tree | 405762fa77d7b70171aaeb732f9f6cb808c6f3dd /arch/x86 | |
| parent | Linux 4.3-rc3 (diff) | |
| download | kernel-qcow2-linux-24f775a6605a8ffc697c0767fc7ea85656ddb958.tar.gz kernel-qcow2-linux-24f775a6605a8ffc697c0767fc7ea85656ddb958.tar.xz kernel-qcow2-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/x86')
| -rw-r--r-- | arch/x86/include/asm/xen/hypercall.h | 4 | ||||
| -rw-r--r-- | arch/x86/xen/setup.c | 2 |
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; |