From 660c22c425cbe14badfb3b0a0206862577701ab7 Mon Sep 17 00:00:00 2001 From: Takuya Yoshikawa Date: Tue, 13 Apr 2010 22:47:24 +0900 Subject: KVM: limit the number of pages per memory slot This patch limits the number of pages per memory slot to make us free from extra care about type issues. Signed-off-by: Takuya Yoshikawa Signed-off-by: Marcelo Tosatti --- include/linux/kvm_host.h | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'include') diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 169d07758ee5..55830638aeb1 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -105,6 +105,12 @@ struct kvm_vcpu { struct kvm_vcpu_arch arch; }; +/* + * Some of the bitops functions do not support too long bitmaps. + * This number must be determined not to exceed such limits. + */ +#define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1) + struct kvm_memory_slot { gfn_t base_gfn; unsigned long npages; -- cgit v1.2.1