On 08.07.2024 14:50, Taylor R Campbell wrote: >> Date: Mon, 8 Jul 2024 11:09:21 +0200 >> From: Jan Beulich <[email protected]> >> >> On 06.07.2024 04:22, Taylor R Campbell wrote: >>> On a Xen 4.14 host (with extraversion=.0.88.g1d1d1f53), with version 1 >>> grant tables, where GNTTABOP_query_size initially returns nr_frames=32 >>> max_nr_frames=64, a NetBSD guest repeatedly queries >>> GNTTABOP_setup_table for successively larger nr_frames from 1 up. >> >> First question: Is there some earlier GNTTABOP_setup_table that you invoke? >> I'd expect (and also observe) nr_frames=1 initially. > > Not that the guest OS invokes. Perhaps the bootloader, pv-grub 0.97, > might invoke GNTTABOP_setup_table? I looked around but couldn't find > an obvious source for pv-grub 0.97. > >> Second: The version you name is pretty unclear from an upstream perspective. >> Leaving aside that 4.14 is out of support, it's entirely unclear whether you >> at least have all bug fixes in place that we have upstream (4.14.6). Without >> that it's hard to see what you're asking for. > > It looks like it's based on commit: > > commit 1d1d1f5391976456a79daac0dcfe7157da1e54f7 > Author: Roger Pau Monné <[email protected]> > Date: Tue Dec 1 15:34:55 2020 +0100 > > x86/vioapic: fix usage of index in place of GSI in vioapic_write_redirent > > Does that help to narrow it down?
Only in so far as telling us that this looks to be far behind. > (I don't know if I can rule out local changes, though.) Which, however, would be relevant. Any chance you could try, against the version you presently run, the XTF patch I sent earlier? Assumes of course you're at least lightly familiar with XTF (xenbits.xen.org/xtf.git). Jan
