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Smith" , Dario Faggioli , Juergen Gross , George Dunlap , Nathan Studer , Stewart Hildebrand , Bertrand Marquis , Volodymyr Babchuk , Alistair Francis , Bob Eshleman , Connor Davis , Oleksii Kurochko , xen-devel@lists.xenproject.org, xen-devel@dornerworks.com References: <20250528091708.390767-1-Penny.Zheng@amd.com> Content-Language: en-US From: Jan Beulich Autocrypt: addr=jbeulich@suse.com; keydata= xsDiBFk3nEQRBADAEaSw6zC/EJkiwGPXbWtPxl2xCdSoeepS07jW8UgcHNurfHvUzogEq5xk hu507c3BarVjyWCJOylMNR98Yd8VqD9UfmX0Hb8/BrA+Hl6/DB/eqGptrf4BSRwcZQM32aZK 7Pj2XbGWIUrZrd70x1eAP9QE3P79Y2oLrsCgbZJfEwCgvz9JjGmQqQkRiTVzlZVCJYcyGGsD /0tbFCzD2h20ahe8rC1gbb3K3qk+LpBtvjBu1RY9drYk0NymiGbJWZgab6t1jM7sk2vuf0Py O9Hf9XBmK0uE9IgMaiCpc32XV9oASz6UJebwkX+zF2jG5I1BfnO9g7KlotcA/v5ClMjgo6Gl MDY4HxoSRu3i1cqqSDtVlt+AOVBJBACrZcnHAUSuCXBPy0jOlBhxPqRWv6ND4c9PH1xjQ3NP nxJuMBS8rnNg22uyfAgmBKNLpLgAGVRMZGaGoJObGf72s6TeIqKJo/LtggAS9qAUiuKVnygo 3wjfkS9A3DRO+SpU7JqWdsveeIQyeyEJ/8PTowmSQLakF+3fote9ybzd880fSmFuIEJldWxp Y2ggPGpiZXVsaWNoQHN1c2UuY29tPsJgBBMRAgAgBQJZN5xEAhsDBgsJCAcDAgQVAggDBBYC AwECHgECF4AACgkQoDSui/t3IH4J+wCfQ5jHdEjCRHj23O/5ttg9r9OIruwAn3103WUITZee e7Sbg12UgcQ5lv7SzsFNBFk3nEQQCACCuTjCjFOUdi5Nm244F+78kLghRcin/awv+IrTcIWF hUpSs1Y91iQQ7KItirz5uwCPlwejSJDQJLIS+QtJHaXDXeV6NI0Uef1hP20+y8qydDiVkv6l IreXjTb7DvksRgJNvCkWtYnlS3mYvQ9NzS9PhyALWbXnH6sIJd2O9lKS1Mrfq+y0IXCP10eS FFGg+Av3IQeFatkJAyju0PPthyTqxSI4lZYuJVPknzgaeuJv/2NccrPvmeDg6Coe7ZIeQ8Yj t0ARxu2xytAkkLCel1Lz1WLmwLstV30g80nkgZf/wr+/BXJW/oIvRlonUkxv+IbBM3dX2OV8 AmRv1ySWPTP7AAMFB/9PQK/VtlNUJvg8GXj9ootzrteGfVZVVT4XBJkfwBcpC/XcPzldjv+3 HYudvpdNK3lLujXeA5fLOH+Z/G9WBc5pFVSMocI71I8bT8lIAzreg0WvkWg5V2WZsUMlnDL9 mpwIGFhlbM3gfDMs7MPMu8YQRFVdUvtSpaAs8OFfGQ0ia3LGZcjA6Ik2+xcqscEJzNH+qh8V m5jjp28yZgaqTaRbg3M/+MTbMpicpZuqF4rnB0AQD12/3BNWDR6bmh+EkYSMcEIpQmBM51qM EKYTQGybRCjpnKHGOxG0rfFY1085mBDZCH5Kx0cl0HVJuQKC+dV2ZY5AqjcKwAxpE75MLFkr wkkEGBECAAkFAlk3nEQCGwwACgkQoDSui/t3IH7nnwCfcJWUDUFKdCsBH/E5d+0ZnMQi+G0A nAuWpQkjM1ASeQwSHEeAWPgskBQL In-Reply-To: <20250528091708.390767-1-Penny.Zheng@amd.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 28.05.2025 11:16, 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 based on Stefano Stabellini's commit "xen: introduce kconfig options to > disable hypercalls"( > https://lore.kernel.org/xen-devel/20241219092917.3006174-1-Sergiy_Kibrik@epam.com) "Based on" can have two meanings - another series is a prereq, or your work is derived from earlier work. Would be nice to be unambiguous, as in the former case it would be unclear at what point (parts of) this series can go in. You also will want to see about chasing acks for some of the patches which are otherwise ready (or perhaps merely depend on a final version of patch 04). Jan > Penny Zheng (18): > xen/pmstat: consolidate code into pmstat.c > xen: make avail_domheap_pages() inlined into get_outstanding_claims() > xen/x86: remove "depends on !PV_SHIM_EXCLUSIVE" > 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 > > Stefano Stabellini (2): > xen: introduce CONFIG_SYSCTL > xen/sysctl: wrap around sysctl hypercall > > xen/Kconfig.debug | 2 +- > xen/arch/arm/Kconfig | 1 + > xen/arch/arm/Makefile | 2 +- > xen/arch/riscv/stubs.c | 2 + > xen/arch/x86/Kconfig | 6 +- > xen/arch/x86/Makefile | 2 +- > xen/arch/x86/acpi/cpu_idle.c | 2 + > xen/arch/x86/acpi/cpufreq/hwp.c | 6 + > xen/arch/x86/acpi/cpufreq/powernow.c | 4 + > xen/arch/x86/configs/pvshim_defconfig | 6 + > xen/arch/x86/hvm/Kconfig | 1 - > xen/arch/x86/psr.c | 18 + > xen/common/Kconfig | 29 +- > xen/common/Makefile | 2 +- > xen/common/page_alloc.c | 55 +- > xen/common/perfc.c | 2 + > xen/common/sched/arinc653.c | 6 + > xen/common/sched/core.c | 4 + > xen/common/sched/cpupool.c | 8 + > xen/common/sched/credit.c | 4 + > xen/common/sched/credit2.c | 4 + > xen/common/sched/private.h | 4 + > xen/common/spinlock.c | 2 + > xen/common/sysctl.c | 4 +- > xen/drivers/acpi/Makefile | 3 +- > xen/drivers/acpi/pm-op.c | 397 +++++++++++++ > xen/drivers/acpi/pmstat.c | 559 ++++++------------- > xen/drivers/char/console.c | 2 + > xen/drivers/cpufreq/cpufreq.c | 31 + > xen/drivers/cpufreq/cpufreq_misc_governors.c | 2 + > xen/drivers/cpufreq/cpufreq_ondemand.c | 2 + > xen/drivers/cpufreq/utility.c | 204 ------- > xen/drivers/video/Kconfig | 4 +- > xen/include/acpi/cpufreq/cpufreq.h | 5 - > xen/include/acpi/cpufreq/processor_perf.h | 14 +- > xen/include/hypercall-defs.c | 8 +- > xen/include/xen/mm.h | 1 - > xen/include/xsm/xsm.h | 18 + > xen/xsm/dummy.c | 6 + > xen/xsm/flask/hooks.c | 14 + > 40 files changed, 798 insertions(+), 648 deletions(-) > create mode 100644 xen/drivers/acpi/pm-op.c >