(2013/11/19 12:16), Madper Xie wrote: > > isimatu.yasuaki@xxxxxxxxxxxxxx writes: > >> Hi Matt, >> >> Sorry for late the reply. >> >> >> (2013/11/11 19:54), Matt Fleming wrote: >>> On Mon, 11 Nov, at 05:52:59PM, Yasuaki Ishimatsu wrote: >>>> Hi Matt, >>>> >>>> I uses FUJITSU's x86 box. >>>> This does not become bricked even if I use all efi variable storage. >>>> Thus I want a way to not need to specify efi_no_storage_paranoia >>>> parameter. >>> >>> The efi_no_storage_paranoia parameter was introduced because some >>> machines do not initiate garbage collection of the NVRAM until you >>> allocate all space - basically it's a switch to turn off the "save 5KB >>> of stoarge at all times" workaround that is needed to avoid bricking >>> some machines. >>> >>> The intention of the switch is not to allow you to fill your NVRAM just >>> because you can. If that is something you want to do then I think it's >>> fair to require you to explicitly turn on efi_no_storage_paranoia. But >>> I'm assuming here that you are doing something like writing lots and >>> lots of pstore entries and just want to write as many as your variable >>> storage will allow? Or are you doing something more fundamental like >>> creating BootXXXX entries? >>> >>> What are you doing to run into the 5KB reserve? How much NVRAM does your >>> machine come with? >> >> I just add boot entry to NVRAM by efibootmgr command. But when Linux boots up, >> the remaining NVRAM is less than 5Kbyte. So I cannnot add new entry. >> > Howdy Yasuaki, > If the remaining NVRAM is less than 5Kb, your writing will trigger a > NVRAM storage reclamation. However you still failed creating entry. So > I'm just curious what itmes occupy lots of nvram storage space. Even if we got EFI_OUT_OF_RESOURCES while running Linux, gc does not run. Trigger of gc is when EFI_OUT_OF_RESOURCES occurs on pre OS environment with UEFI. So on my system, if EFI_OUT_OF_RESOURCES occurs by the 5Kbyte threshold, we cannot use nvram storage until EFI_OUT_OF_RESOURCES occurs on pre OS environment with UEFI. Thanks, Yasuaki Ishimatsu > >> Thanks, >> Yasuaki Ishimatsu > > -- > Best, > Madper > -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
