On Sun, Apr 14, 2019 at 10:51:09PM -0700, Christoph Hellwig wrote: > On Sat, Apr 13, 2019 at 06:30:52PM +0200, Heinrich Schuchardt wrote: > > This patch avoids > > ERROR: "__sync_icache_dcache" [drivers/xen/xen-privcmd.ko] undefined! > > observed when compiling v4.19.34. > > > > The xen-privcmd driver, which can be modular, calls set_pte_at() > > which in turn may call __sync_icache_dcache(). > > Maybe that really is a sign that it should not be modular.. This issue has been discussed several times, and this URL gives a list of all messages on linux-arm-kernel that mention __sync_icache_dcache: https://archive.armlinux.org.uk/lurker/search/20380101.000000.00000000@ml:linux-arm-kernel,sb:__sync_icache_dcache.en.html At the beginning of March, Boris Ostrovsky pointed that another solution is available that does not need architecture private symbols to be exported. Since I've already said in a previous thread that I don't want this function exported, it seems the way forward is pretty obvious. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up According to speedtest.net: 11.9Mbps down 500kbps up
