On 10/29/2015 08:48 AM, Ard Biesheuvel wrote:
>There is another (existing) problem I spotted, in that we'll sometimes >move the kernel to a worse address. If the kernel was loaded at a valid >address (i.e. image_addr % SZ_2MB == TEXT_OFFSET), but not at the >preferred offset, we try to relocate it, even if it's already at the >lowest possible address. >
Indeed. Unlikely to occur in practice, since UEFI mostly allocates top down, but it would indeed be better to drop the new allocation and simply use the existing one if it is not an improvement.
So you're saying that if we modify our UEFI so that it always loads the kernel at dram_base + TEXT_OFFSET, then one day in the future the kernel will skip the relocation?
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