Joshua Kinard a0a5ac3ce8 MIPS: Fix delay slot bug in `atomic*_sub_if_positive' for R10000_LLSC_WAR ... This patch fixes an old bug in MIPS ll/sc atomics, in the `atomic_sub_if_positive' and `atomic64_sub_if_positive' functions, for the R10000_LLSC_WAR case where the result of the subu/dsubu instruction would potentially not be made available to the sc/scd instruction due to being in the delay-slot of the branch-likely (beqzl) instruction. This also removes the need for the `noreorder' directive, allowing GAS to use delay slot scheduling as needed. The same fix is also applied to the standard branch (beqz) case in preparation for a follow-up patch that will cleanup/merge the R10000_LLSC_WAR and non-R10K sections together. Signed-off-by: Joshua Kinard <kumba@gentoo.org> Signed-off-by: Paul Burton <paul.burton@mips.com> Tested-by: Joshua Kinard <kumba@gentoo.org> Patchwork: https://patchwork.linux-mips.org/patch/17735/ Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <james.hogan@mips.com> Cc: "Maciej W. Rozycki" <macro@mips.com> Cc: linux-mips@linux-mips.org		2018-07-12 11:14:10 -07:00
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asm	MIPS: Fix delay slot bug in `atomic*_sub_if_positive' for R10000_LLSC_WAR	2018-07-12 11:14:10 -07:00
uapi/asm	MIPS: Wire up io_pgetevents syscall	2018-06-19 21:14:29 -07:00