[Public] > -----Original Message----- > From: Jan Beulich <jbeul...@suse.com> > Sent: Friday, July 4, 2025 5:49 PM > To: Penny, Zheng <penny.zh...@amd.com> > Cc: Huang, Ray <ray.hu...@amd.com>; Andrew Cooper > <andrew.coop...@citrix.com>; Anthony PERARD <anthony.per...@vates.tech>; > Orzel, Michal <michal.or...@amd.com>; Julien Grall <jul...@xen.org>; Roger Pau > Monné <roger....@citrix.com>; Stefano Stabellini <sstabell...@kernel.org>; > Daniel > P. Smith <dpsm...@apertussolutions.com>; Dario Faggioli <dfaggi...@suse.com>; > Juergen Gross <jgr...@suse.com>; George Dunlap <g...@xenproject.org>; > Nathan Studer <nathan.stu...@dornerworks.com>; Stewart Hildebrand > <stew...@stew.dk>; Bertrand Marquis <bertrand.marq...@arm.com>; Volodymyr > Babchuk <volodymyr_babc...@epam.com>; Alistair Francis > <alistair.fran...@wdc.com>; Bob Eshleman <bobbyeshle...@gmail.com>; > Connor Davis <connojda...@gmail.com>; Oleksii Kurochko > <oleksii.kuroc...@gmail.com>; xen-devel@lists.xenproject.org; xen- > de...@dornerworks.com > Subject: Re: [PATCH v6 00/18] xen: introduce CONFIG_SYSCTL > > On 04.07.2025 11:29, Penny Zheng wrote: > > It can be beneficial for some dom0less systems to further reduce Xen > > footprint via disabling some hypercalls handling code, which may not > > to be used & required in such systems. Each hypercall has a separate > > option to keep configuration flexible. > > > > Options to disable hypercalls: > > - sysctl > > - domctl > > - hvm > > - physdev > > - platform > > > > This patch serie is only focusing on introducing CONFIG_SYSCTL. > > Different options will be covered in different patch serie. > > > > Features, like LIVEPATCH, Overlay DTB, which fully rely on sysctl op, > > will be wrapped with CONFIG_SYSCTL, to reduce Xen footprint as much as > possible. > > > > It is derived from Stefano Stabellini's commit "xen: introduce kconfig > > options to disable hypercalls"( > > https://lore.kernel.org/xen-devel/20241219092917.3006174-1-Sergiy_Kibr > > i...@epam.com) > > > > --- > > Commit "xen/x86: remove "depends on !PV_SHIM_EXCLUSIVE"" and commit " > > xen/sysctl: wrap around sysctl hypercall" shall be commited together. > > --- > > Penny Zheng (16): > > xen/xsm: wrap around xsm_sysctl with CONFIG_SYSCTL > > xen/sysctl: wrap around XEN_SYSCTL_readconsole > > xen/sysctl: make CONFIG_TRACEBUFFER depend on CONFIG_SYSCTL > > xen/sysctl: wrap around XEN_SYSCTL_sched_id > > xen/sysctl: wrap around XEN_SYSCTL_perfc_op > > xen/sysctl: wrap around XEN_SYSCTL_lockprof_op > > xen/pmstat: introduce CONFIG_PM_OP > > xen/sysctl: introduce CONFIG_PM_STATS > > xen/sysctl: wrap around XEN_SYSCTL_page_offline_op > > xen/sysctl: wrap around XEN_SYSCTL_cpupool_op > > xen/sysctl: wrap around XEN_SYSCTL_scheduler_op > > xen/sysctl: wrap around XEN_SYSCTL_physinfo > > xen/sysctl: make CONFIG_COVERAGE depend on CONFIG_SYSCTL > > xen/sysctl: make CONFIG_LIVEPATCH depend on CONFIG_SYSCTL > > xen/sysctl: wrap around arch-specific arch_do_sysctl > > xen/x86: remove "depends on !PV_SHIM_EXCLUSIVE" > > > > Stefano Stabellini (2): > > xen: introduce CONFIG_SYSCTL > > xen/sysctl: wrap around sysctl hypercall > > This doesn't look to be based on latest staging, where some of the changes > above > are already present. I specifically tried to get some of the stuff in so that > the next > re-posting wouldn't be as large.
Sorry, I'll rebase > > Jan
