On Mon, 21 Sep 2015 22:58:35 +0200 Robert Richter <[email protected]> wrote:
> From: Robert Richter <[email protected]> > > This patch implements Cavium ThunderX erratum 23154. > > The gicv3 of ThunderX requires a modified version for reading the IAR > status to ensure data synchronization. Since this is in the fast-path > and called with each interrupt, runtime patching is used using jump > label patching for smallest overhead (no-op). This is the same > technique as used for tracepoints. > > v5: > * fixed calling gic_read_iar_cavium_thunderx() if jump label is > enabled > * made is_cavium_thunderx static > * removed ARCH_THUNDER dependency for Cavium errata options to > make it available for generic kernels > > v4: > * simplify code to only use cpus_have_cap() in gicv3_enable_quirks() > > v3: > * fix erratum to be dependend from midr > * use arm64 errata framework > > v2: > * implement code in a single asm() to keep instruction sequence > * added comment to the code that explains the erratum > * apply workaround also if running as guest, thus check MIDR > > Signed-off-by: Robert Richter <[email protected]> Reviewed-by: Marc Zyngier <[email protected]> M. -- Jazz is not dead. It just smells funny. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
