On Fri, Jun 02, 2023 at 05:56:12PM +0800, kernel test robot wrote: > Hi Shunsuke, > > kernel test robot noticed the following build warnings: > > [auto build test WARNING on mst-vhost/linux-next] > [also build test WARNING on linus/master horms-ipvs/master v6.4-rc4 next-20230602] > [If your patch is applied to the wrong git tree, kindly drop us a note. > And when submitting patch, we suggest to use '--base' as documented in > https://git-scm.com/docs/git-format-patch#_base_tree_information] > > url: https://github.com/intel-lab-lkp/linux/commits/Shunsuke-Mie/vringh-IOMEM-support/20230602-135351 > base: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next > patch link: https://lore.kernel.org/r/20230602055211.309960-2-mie%40igel.co.jp > patch subject: [PATCH v4 1/1] vringh: IOMEM support > config: alpha-allyesconfig (https://download.01.org/0day-ci/archive/20230602/202306021725.3otSfXPF-lkp@xxxxxxxxx/config) > compiler: alpha-linux-gcc (GCC) 12.3.0 > reproduce (this is a W=1 build): > mkdir -p ~/bin > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # https://github.com/intel-lab-lkp/linux/commit/de2a1f5220c32e953400f225aba6bd294a8d41b8 > git remote add linux-review https://github.com/intel-lab-lkp/linux > git fetch --no-tags linux-review Shunsuke-Mie/vringh-IOMEM-support/20230602-135351 > git checkout de2a1f5220c32e953400f225aba6bd294a8d41b8 > # save the config file > mkdir build_dir && cp config build_dir/.config > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.3.0 ~/bin/make.cross W=1 O=build_dir ARCH=alpha olddefconfig > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.3.0 ~/bin/make.cross W=1 O=build_dir ARCH=alpha SHELL=/bin/bash drivers/ > > If you fix the issue, kindly add following tag where applicable > | Reported-by: kernel test robot <lkp@xxxxxxxxx> > | Closes: https://lore.kernel.org/oe-kbuild-all/202306021725.3otSfXPF-lkp@xxxxxxxxx/ > > All warnings (new ones prefixed by >>): > > >> drivers/vhost/vringh.c:1661:5: warning: no previous prototype for 'vringh_init_iomem' [-Wmissing-prototypes] > 1661 | int vringh_init_iomem(struct vringh *vrh, u64 features, unsigned int num, > | ^~~~~~~~~~~~~~~~~ > >> drivers/vhost/vringh.c:1683:5: warning: no previous prototype for 'vringh_getdesc_iomem' [-Wmissing-prototypes] > 1683 | int vringh_getdesc_iomem(struct vringh *vrh, struct vringh_kiov *riov, > | ^~~~~~~~~~~~~~~~~~~~ > >> drivers/vhost/vringh.c:1714:9: warning: no previous prototype for 'vringh_iov_pull_iomem' [-Wmissing-prototypes] > 1714 | ssize_t vringh_iov_pull_iomem(struct vringh *vrh, struct vringh_kiov *riov, > | ^~~~~~~~~~~~~~~~~~~~~ > >> drivers/vhost/vringh.c:1729:9: warning: no previous prototype for 'vringh_iov_push_iomem' [-Wmissing-prototypes] > 1729 | ssize_t vringh_iov_push_iomem(struct vringh *vrh, struct vringh_kiov *wiov, > | ^~~~~~~~~~~~~~~~~~~~~ > >> drivers/vhost/vringh.c:1744:6: warning: no previous prototype for 'vringh_abandon_iomem' [-Wmissing-prototypes] > 1744 | void vringh_abandon_iomem(struct vringh *vrh, unsigned int num) > | ^~~~~~~~~~~~~~~~~~~~ > >> drivers/vhost/vringh.c:1759:5: warning: no previous prototype for 'vringh_complete_iomem' [-Wmissing-prototypes] > 1759 | int vringh_complete_iomem(struct vringh *vrh, u16 head, u32 len) > | ^~~~~~~~~~~~~~~~~~~~~ > >> drivers/vhost/vringh.c:1777:6: warning: no previous prototype for 'vringh_notify_enable_iomem' [-Wmissing-prototypes] > 1777 | bool vringh_notify_enable_iomem(struct vringh *vrh) > | ^~~~~~~~~~~~~~~~~~~~~~~~~~ > >> drivers/vhost/vringh.c:1790:6: warning: no previous prototype for 'vringh_notify_disable_iomem' [-Wmissing-prototypes] > 1790 | void vringh_notify_disable_iomem(struct vringh *vrh) > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ > >> drivers/vhost/vringh.c:1802:5: warning: no previous prototype for 'vringh_need_notify_iomem' [-Wmissing-prototypes] > 1802 | int vringh_need_notify_iomem(struct vringh *vrh) > | ^~~~~~~~~~~~~~~~~~~~~~~~ > > > vim +/vringh_init_iomem +1661 drivers/vhost/vringh.c You probably should put the relevant code within ifdef. > 1647 > 1648 /** > 1649 * vringh_init_iomem - initialize a vringh for a vring on io-memory. > 1650 * @vrh: the vringh to initialize. > 1651 * @features: the feature bits for this ring. > 1652 * @num: the number of elements. > 1653 * @weak_barriers: true if we only need memory barriers, not I/O. > 1654 * @desc: the userspace descriptor pointer. > 1655 * @avail: the userspace avail pointer. > 1656 * @used: the userspace used pointer. > 1657 * > 1658 * Returns an error if num is invalid: you should check pointers > 1659 * yourself! > 1660 */ > > 1661 int vringh_init_iomem(struct vringh *vrh, u64 features, unsigned int num, > 1662 bool weak_barriers, struct vring_desc *desc, > 1663 struct vring_avail *avail, struct vring_used *used) > 1664 { > 1665 return vringh_init_kern(vrh, features, num, weak_barriers, desc, avail, > 1666 used); > 1667 } > 1668 EXPORT_SYMBOL(vringh_init_iomem); > 1669 > 1670 /** > 1671 * vringh_getdesc_iomem - get next available descriptor from vring on io-memory. > 1672 * @vrh: the vring on io-memory. > 1673 * @riov: where to put the readable descriptors (or NULL) > 1674 * @wiov: where to put the writable descriptors (or NULL) > 1675 * @head: head index we received, for passing to vringh_complete_iomem(). > 1676 * @gfp: flags for allocating larger riov/wiov. > 1677 * > 1678 * Returns 0 if there was no descriptor, 1 if there was, or -errno. > 1679 * > 1680 * There some notes, and those are same with vringh_getdesc_kern(). Please see > 1681 * it. > 1682 */ > > 1683 int vringh_getdesc_iomem(struct vringh *vrh, struct vringh_kiov *riov, > 1684 struct vringh_kiov *wiov, u16 *head, gfp_t gfp) > 1685 { > 1686 int err; > 1687 > 1688 err = __vringh_get_head(vrh, getu16_iomem, &vrh->last_avail_idx); > 1689 if (err < 0) > 1690 return err; > 1691 > 1692 /* Empty... */ > 1693 if (err == vrh->vring.num) > 1694 return 0; > 1695 > 1696 *head = err; > 1697 err = __vringh_iov(vrh, *head, riov, wiov, no_range_check, NULL, gfp, > 1698 copydesc_iomem); > 1699 if (err) > 1700 return err; > 1701 > 1702 return 1; > 1703 } > 1704 EXPORT_SYMBOL(vringh_getdesc_iomem); > 1705 > 1706 /** > 1707 * vringh_iov_pull_iomem - copy bytes from vring_iov. > 1708 * @riov: the riov as passed to vringh_getdesc_iomem() (updated as we consume) > 1709 * @dst: the place to copy. > 1710 * @len: the maximum length to copy. > 1711 * > 1712 * Returns the bytes copied <= len or a negative errno. > 1713 */ > > 1714 ssize_t vringh_iov_pull_iomem(struct vringh *vrh, struct vringh_kiov *riov, > 1715 void *dst, size_t len) > 1716 { > 1717 return vringh_iov_xfer(vrh, riov, dst, len, xfer_from_iomem); > 1718 } > 1719 EXPORT_SYMBOL(vringh_iov_pull_iomem); > 1720 > 1721 /** > 1722 * vringh_iov_push_iomem - copy bytes into vring_iov. > 1723 * @wiov: the wiov as passed to vringh_getdesc_iomem() (updated as we consume) > 1724 * @src: the place to copy from. > 1725 * @len: the maximum length to copy. > 1726 * > 1727 * Returns the bytes copied <= len or a negative errno. > 1728 */ > > 1729 ssize_t vringh_iov_push_iomem(struct vringh *vrh, struct vringh_kiov *wiov, > 1730 const void *src, size_t len) > 1731 { > 1732 return vringh_iov_xfer(vrh, wiov, (void *)src, len, xfer_to_iomem); > 1733 } > 1734 EXPORT_SYMBOL(vringh_iov_push_iomem); > 1735 > 1736 /** > 1737 * vringh_abandon_iomem - we've decided not to handle the descriptor(s). > 1738 * @vrh: the vring. > 1739 * @num: the number of descriptors to put back (ie. num > 1740 * vringh_getdesc_iomem() to undo). > 1741 * > 1742 * The next vringh_get_kern() will return the old descriptor(s) again. > 1743 */ > > 1744 void vringh_abandon_iomem(struct vringh *vrh, unsigned int num) > 1745 { > 1746 vringh_abandon_kern(vrh, num); > 1747 } > 1748 EXPORT_SYMBOL(vringh_abandon_iomem); > 1749 > 1750 /** > 1751 * vringh_complete_iomem - we've finished with descriptor, publish it. > 1752 * @vrh: the vring. > 1753 * @head: the head as filled in by vringh_getdesc_iomem(). > 1754 * @len: the length of data we have written. > 1755 * > 1756 * You should check vringh_need_notify_iomem() after one or more calls > 1757 * to this function. > 1758 */ > > 1759 int vringh_complete_iomem(struct vringh *vrh, u16 head, u32 len) > 1760 { > 1761 struct vring_used_elem used; > 1762 > 1763 used.id = cpu_to_vringh32(vrh, head); > 1764 used.len = cpu_to_vringh32(vrh, len); > 1765 > 1766 return __vringh_complete(vrh, &used, 1, putu16_iomem, putused_iomem); > 1767 } > 1768 EXPORT_SYMBOL(vringh_complete_iomem); > 1769 > 1770 /** > 1771 * vringh_notify_enable_iomem - we want to know if something changes. > 1772 * @vrh: the vring. > 1773 * > 1774 * This always enables notifications, but returns false if there are > 1775 * now more buffers available in the vring. > 1776 */ > > 1777 bool vringh_notify_enable_iomem(struct vringh *vrh) > 1778 { > 1779 return __vringh_notify_enable(vrh, getu16_iomem, putu16_iomem); > 1780 } > 1781 EXPORT_SYMBOL(vringh_notify_enable_iomem); > 1782 > 1783 /** > 1784 * vringh_notify_disable_iomem - don't tell us if something changes. > 1785 * @vrh: the vring. > 1786 * > 1787 * This is our normal running state: we disable and then only enable when > 1788 * we're going to sleep. > 1789 */ > > 1790 void vringh_notify_disable_iomem(struct vringh *vrh) > 1791 { > 1792 __vringh_notify_disable(vrh, putu16_iomem); > 1793 } > 1794 EXPORT_SYMBOL(vringh_notify_disable_iomem); > 1795 > 1796 /** > 1797 * vringh_need_notify_iomem - must we tell the other side about used buffers? > 1798 * @vrh: the vring we've called vringh_complete_iomem() on. > 1799 * > 1800 * Returns -errno or 0 if we don't need to tell the other side, 1 if we do. > 1801 */ > > 1802 int vringh_need_notify_iomem(struct vringh *vrh) > 1803 { > 1804 return __vringh_need_notify(vrh, getu16_iomem); > 1805 } > 1806 EXPORT_SYMBOL(vringh_need_notify_iomem); > 1807 > > -- > 0-DAY CI Kernel Test Service > https://github.com/intel/lkp-tests/wiki _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
