On 4 April 2016 at 17:40, Vijay Kilari <vijay.kil...@gmail.com> wrote: > On Mon, Apr 4, 2016 at 7:14 PM, Peter Maydell <peter.mayd...@linaro.org> > wrote: >> I agree that this would definitely improve performance (both for >> migration and for emulated guests), but I'm afraid this breaks >> running 32-bit ARMv5 and ARMv7M guests with this QEMU binary, >> so we can't do this. If we want to allow the minimum page size to >> be bigger than 1K for AArch64 CPUs then we need to make it a >> runtime settable thing rather than compile-time (which is not >> an entirely trivial thing). > > Do you mean to say that based on -cpu type qemu option > choose the page size at runtime?
If you want to avoid defining TARGET_PAGE_SIZE to the lowest-common-denominator 1K, then yes, you'd need to choose it at runtime. That could be painful to implement. thanks -- PMM
