From 7b7e39522a61f402d41dd9a67f3fa2133ef9d4e8 Mon Sep 17 00:00:00 2001 From: Ken Hofsass Date: Wed, 31 Jan 2018 16:03:35 -0800 Subject: KVM: x86: add SYNC_REGS_SIZE_BYTES #define. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Replace hardcoded padding size value for struct kvm_sync_regs with #define SYNC_REGS_SIZE_BYTES. Also update the value specified in api.txt from outdated hardcoded value to SYNC_REGS_SIZE_BYTES. Signed-off-by: Ken Hofsass Reviewed-by: David Hildenbrand Acked-by: Christian Borntraeger Signed-off-by: Radim Krčmář --- include/uapi/linux/kvm.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'include/uapi/linux/kvm.h') diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index 2d2d926113ba..088c2c92db55 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -396,6 +396,10 @@ struct kvm_run { char padding[256]; }; + /* 2048 is the size of the char array used to bound/pad the size + * of the union that holds sync regs. + */ + #define SYNC_REGS_SIZE_BYTES 2048 /* * shared registers between kvm and userspace. * kvm_valid_regs specifies the register classes set by the host @@ -407,7 +411,7 @@ struct kvm_run { __u64 kvm_dirty_regs; union { struct kvm_sync_regs regs; - char padding[2048]; + char padding[SYNC_REGS_SIZE_BYTES]; } s; }; -- cgit v1.2.3