Messages in this thread Patch in this message | | | From | Juergen Gross <> | Subject | [PATCH] xen: fix sparse warning in p2m.c | Date | Fri, 5 Dec 2014 07:16:35 +0100 |
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The patch "Speed up set_phys_to_machine() by using read-only mappings" introduced a sparse warning:
arch/x86/xen/p2m.c:628:13: sparse: incorrect type in argument 1 (different address spaces)
Avoid the warning.
Signed-off-by: Juergen Gross <jgross@suse.com> --- arch/x86/xen/p2m.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c index 8b5db51..2defca9 100644 --- a/arch/x86/xen/p2m.c +++ b/arch/x86/xen/p2m.c @@ -615,6 +615,7 @@ bool __set_phys_to_machine(unsigned long pfn, unsigned long mfn) { pte_t *ptep; unsigned int level; + unsigned long __user *addr; /* don't track P2M changes in autotranslate guests */ if (unlikely(xen_feature(XENFEAT_auto_translated_physmap))) @@ -625,7 +626,8 @@ bool __set_phys_to_machine(unsigned long pfn, unsigned long mfn) return true; } - if (likely(!__put_user(mfn, xen_p2m_addr + pfn))) + addr = (unsigned long __user *)xen_p2m_addr + pfn; + if (likely(!__put_user(mfn, addr))) return true; ptep = lookup_address((unsigned long)(xen_p2m_addr + pfn), &level); -- 2.1.2
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