On 08/26/2014 03:05 PM, Yinghai Lu wrote: > > The firmware has bug and can use buffer above 4G to read files. > and if the file size is 512 bytes alignment, then reading could go through. > File size, or alignment? Different things. Again, your patch description is not just incomplete, but seems to be actively misleading. This does, however, suggest at least two possible solutions: 1. We can read the initramfs into a temporary buffer and memcpy() it to the target. 2. We might be able to align the initramfs buffer to a 512-byte section and then round up the size. The 512 bytes here is probably a hardware sector, I'm not sure how this will play on 4K-hard-sectored media, although those are few and far between. -hpa -- 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
