Hi Russell, >> I may have missed part of this, but isn't one of the points regarding >> this that the zImage decompressor always runs with data cache disabled, > > Most certainly not. We've had the data cache enabled for years and > years. And I mean 10+ years. We may have been lacking support on > some CPUs, but that was because of lack of contributions. > >> resulting in a slow decompress, where as if the U-Boot decompressor is >> used (ie, gzipping the Image, and telling U-Boot to decompress), then it >> can run with caches enabled, improving boot speed? > > That's pure FUD. I don't want to open a can of worms on this, and I certainly haven't looked into the image decompressor within the Linux kernel, but from a boot speed point of view we certainly see a significant speed improvement switching from zImage to gzipped-Image. Do you know which platforms include the data-cache support in the decompressor? Regards, Andre -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
