Hello Shaohua,
On Fri, 10 Jun 2005, Shaohua Li wrote:
> We should flush cache at CPU hotplug. An error has been observed data is
> corrupted after CPU hotplug in CPUs with bigger cache.
> I guess IA64 requires similar change, Ashok?
Interesting, which processor was this?
> Signed-off-by: Shaohua.li<[email protected]>
> ---
>
> linux-2.6.12-rc6-mm1-root/arch/i386/kernel/process.c | 1 +
> linux-2.6.12-rc6-mm1-root/arch/x86_64/kernel/process.c | 1 +
> 2 files changed, 2 insertions(+)
>
> diff -puN arch/i386/kernel/process.c~flush_cache_cpuhotplug arch/i386/kernel/process.c
> --- linux-2.6.12-rc6-mm1/arch/i386/kernel/process.c~flush_cache_cpuhotplug 2005-06-10 10:56:05.082247160 +0800
> +++ linux-2.6.12-rc6-mm1-root/arch/i386/kernel/process.c 2005-06-10 11:05:10.597316264 +0800
> @@ -155,6 +155,7 @@ static inline void play_dead(void)
> {
> /* This must be done before dead CPU ack */
> cpu_exit_clear();
> + wbinvd();
> mb();
We shouldn't need that mb() there anymore then, ditto for the other
location.
-
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/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]