On 04/29/2019 09:16 PM, Jeff Kirsher wrote: > From: Björn Töpel <bjorn.to...@intel.com> > > GCC will generate jump tables for switch-statements with more than 5 > case statements. An entry into the jump table is an indirect call, > which means that for CONFIG_RETPOLINE builds, this is rather > expensive. > > This commit replaces the switch-statement that acts on the XDP program > result with an if-clause. > > The if-clause was also refactored into a common function that can be > used by AF_XDP zero-copy and non-zero-copy code.
Isn't it fixed upstream by now already (also in gcc)? https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ce02ef06fcf7a399a6276adb83f37373d10cbbe1 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a9d57ef15cbe327fe54416dd194ee0ea66ae53a4
