On Sat, Jun 22, 2013 at 05:51:03PM +0200, Willy Tarreau wrote: > On Sat, Jun 22, 2013 at 12:44:22PM -0300, Ezequiel Garcia wrote: > > Hi Greg, > > > > On Fri, Jun 21, 2013 at 05:31:04PM +0200, Gregory CLEMENT wrote: > > > This commit fixes the regression on Armada 370 (the kernal hang during > > > boot) introduced by the commit: "ARM: 7691/1: mm: kill unused > > > TLB_CAN_READ_FROM_L1_CACHE and use ALT_SMP instead". > > > > > > When coming out of either a Wait for Interrupt (WFI) or a Wait for > > > Event (WFE) IDLE states, a specific timing sensitivity exists between > > > the retiring WFI/WFE instructions and the newly issued subsequent > > > instructions. This sensitivity can result in a CPU hang scenario. The > > > workaround is to insert either a Data Synchronization Barrier (DSB) or > > > Data Memory Barrier (DMB) command immediately after the WFI/WFE > > > instruction. > > > > > > This commit was based on the work of Lior Amsalem, but heavily > > > modified to apply the errata fix dynamically according to the > > > processor type thanks to the suggestions of Russell King and Nicolas > > > Pitre. > > > > > > Signed-off-by: Gregory CLEMENT <gregory.clement@xxxxxxxxxxxxxxxxxx> > > > Reviewed-by: Will Deacon <will.deacon@xxxxxxx> > > > Cc: <stable@xxxxxxxxxxxxxxx> > > > > This patch doesn't seem to apply on any 3.10-rcX; > > maybe I'm doing something wrong, but could you double-check this? > > Interesting, I had the same issue and thought it was because of my > tree, though visually I couldn't spot the issue. It probably was a > space/tab issue only. OK it was probably because of other pending changes since rc6, because it applied perfectly on top of 3.10-rc7. Willy -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html