configure: Rename CONFIG_IVSHMEM to CONFIG_IVSHMEM_DEVICE
The current CONFIG_IVSHMEM is confusing, because it looks like it's a flag for "do we have ivshmem support?", but actually it's a flag for "is the ivshmem PCI device being compiled?" (and implicitly "do we have ivshmem support?" is tested with CONFIG_EVENTFD). Rename it to CONFIG_IVSHMEM_DEVICE to clear this confusion up; shortly we will add a new CONFIG_IVSHMEM which really does indicate whether the host can support ivshmem. Signed-off-by: NPeter Maydell <peter.maydell@linaro.org> Reviewed-by: NMarkus Armbruster <armbru@redhat.com> Message-id: 1500021225-4118-2-git-send-email-peter.maydell@linaro.org
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