Hi Borislav, Harb, On 19 January 2016 at 01:38, Abdulhamid, Harb <harba@xxxxxxxxxxxxxx> wrote: > > > On 1/18/2016 11:08 AM, Borislav Petkov wrote: >> On Mon, Jan 18, 2016 at 10:08:00AM -0500, Abdulhamid, Harb wrote: >> Here >> is my crack at massaging the language a bit more: "Under >> normal >> circumstances, when a hardware error occurs, the kernel gets >> notified via >> an NMI, MCE or some other method. When the error has a >> fatal severity or >> is unrecoverable, the kernel would normally >> panic. > > So this is still >> not exact. It all depends on what the hardware > does. Even more >> importantly, does the hardware even run the error > handler and let it >> access MCA banks to find about the error or does > it directly warm-reset >> the system. > > The error can happen, it is critical, *nothing* might be >> visible in > the MCA registers (this is x86-specific) and the machine would >> reset. > Only when you warm-reset, you may or may not see anything in there. >> > > In reading the BERT explanation in the ACPI spec, I have to say, it > >> sounds pretty ok to me: > > "18.3.1 Boot Error Source > > Under normal >> circumstances, when a hardware error occurs, the error > handler receives >> control and processes the error. This gives OSPM a > chance to process the >> error condition, report it, and optionally > attempt recovery. In some >> cases, the system is unable to process an > error. For example, system >> firmware or a management controller may > choose to reset the system or the >> system might experience an > uncontrolled crash or reset.The boot error >> source is used to report > unhandled errors that occurred in a previous >> boot. This mechanism is > described in the BERT table." > > I think we >> should take that text. :) > Agreed. That would be best. Thanks, guys. Will use this instead. > > Apologies for the format of the last email. > > -- > Qualcomm Technologies, Inc. on behalf of Qualcomm Innovation Center, Inc. > Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux > Foundation Collaborative Project -- Best regards, Fu Wei Software Engineer Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch Ph: +86 21 61221326(direct) Ph: +86 186 2020 4684 (mobile) Room 1512, Regus One Corporate Avenue,Level 15, One Corporate Avenue,222 Hubin Road,Huangpu District, Shanghai,China 200021 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
