On Mon, 24 Feb 2014 08:35:06 Josh Boyer wrote: > On Mon, Feb 24, 2014 at 2:00 AM, Alistair Popple <alist...@popple.id.au> wrote: > > This patch adds an option to enable a work around for an icache bug on > > 476 that can cause execution of stale instructions when falling > > through pages (IBM errata #46). It requires a recent version of > > binutils which supports the --ppc476-workaround option. > > > > The work around enables the appropriate linker options and ensures > > that all module output sections are aligned to 4K page boundaries. The > > work around is only required when building modules. > > What happens if you're using 64K pages? Is the alignment 4K always, > or does it need to be aligned to PAGE_SIZE?
The work around inserts an extra instruction on 4K page boundaries. As a 64K (or a 16K) page boundary is also a 4K page boundary the work around should cover those page sizes as well. - Alistair > josh _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
