On Mon, Jul 11, 2011 at 11:14:41AM -0400, Takao Indoh wrote: > Revised version of the patch which was posted by Cong WANG > > v1: > https://lkml.org/lkml/2011/3/10/206 > > There is a problem with putting the first kernel in EFI virtual mode, > it is that when the second kernel comes up it tries to initialize the > EFI again and once we have put EFI in virtual mode we can not really > do that. > > Actually, EFI is not necessary for kdump, we can boot the second kernel > with "noefi" parameter, but the boot will mostly fail because 2nd kernel > cannot find RSDP. > > In this situation, we introduced "acpi_rsdp=" kernel parameter, so that > kexec-tools can pass the "noefi acpi_rsdp=X" to the second kernel to make > kdump works. > > Changes in v2: > * Change parameter name from "acpi_addr" to "acpi_rsdp" > * Add CONFIG_KEXEC How will the tools get the physical address of the RSDP? -- 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
