From: Nuno Das Neves <nunodasneves@xxxxxxxxxxxxxxxxxxx> Sent: Monday, November 11, 2024 10:00 AM > > On 11/10/2024 8:12 PM, Michael Kelley wrote: > > From: Nuno Das Neves <nunodasneves@xxxxxxxxxxxxxxxxxxx> Sent: Thursday, November 7, 2024 2:32 PM > >> > >> To support Hyper-V Dom0 (aka Linux as root partition), many new > >> definitions are required. > > > > Using "dom0" terminology here and in the Subject: line is likely to > > be confusing to folks who aren't intimately involved in Hyper-V work. > > Previous Linux kernel commit messages and code for running in the > > Hyper-V root partition use "root partition" terminology, and I couldn't > > find "dom0" having been used before. "root partition" would be more > > consistent, and it also matches the public documentation for Hyper-V. > > "dom0" is Xen specific terminology, and having it show up in Hyper-V > > patches would be confusing for the casual reader. I know "dom0" has > > been used internally at Microsoft as shorthand for "Hyper-V root > > partition", but it's probably best to completely avoid such shorthand > > in public Linux kernel patches and code. > > > > Just my $.02 .... > > > > Noted - I will update the terminology in v3 and generally avoid "Dom0", > except possibly by way of explanation (i.e. to compare it to Xen Dom0). Yes, I'm good with comparing the Hyper-V root partition to Xen dom0 as part of an explanation. Michael > > Thanks > Nuno > > >> > >> The plan going forward is to directly import definitions from > >> Hyper-V code without waiting for them to land in the TLFS document. > >> This is a quicker and more maintainable way to import definitions, > >> and is a step toward the eventual goal of exporting headers directly > >> from Hyper-V for use in Linux. > >> > >> This patch series introduces new headers (hvhdk.h, hvgdk.h, etc, > >> see patch #3) derived directly from Hyper-V code. hyperv-tlfs.h is > >> replaced with hvhdk.h (which includes the other new headers) > >> everywhere. > >> > >> No functional change is expected. > >> > >> Summary: > >> Patch 1-2: Minor cleanup patches > >> Patch 3: Add the new headers (hvhdk.h, etc..) in include/hyperv/ > >> Patch 4: Switch to the new headers > >> > >> Signed-off-by: Nuno Das Neves <nunodasneves@xxxxxxxxxxxxxxxxxxx> > >> --- > >> Changelog: > >> v2: > >> - Rework the series to simply use the new headers everywhere > >> instead of fiddling around to keep hyperv-tlfs.h used in some > >> places, suggested by Michael Kelley and Easwar Hariharan > > > > Thanks! That should be simpler all around. > > > > Michael > > > >> - Fix compilation errors with some configs by adding missing > >> definitions and changing some names, thanks to Simon Horman for > >> catching those > >> - Add additional definitions to the new headers to support them now > >> replacing hyperv-tlfs.h everywhere > >> - Add additional context in the commit messages for patches #3 and #4 > >> - In patch #2, don't remove indirect includes. Only remove includes > >> which truly aren't used, suggested by Michael Kelley > >> > >> --- > >> Nuno Das Neves (4): > >> hyperv: Move hv_connection_id to hyperv-tlfs.h > >> hyperv: Clean up unnecessary #includes > >> hyperv: Add new Hyper-V headers in include/hyperv > >> hyperv: Switch from hyperv-tlfs.h to hyperv/hvhdk.h > >> > >> arch/arm64/hyperv/hv_core.c | 3 +- > >> arch/arm64/hyperv/mshyperv.c | 4 +- > >> arch/arm64/include/asm/mshyperv.h | 2 +- > >> arch/x86/hyperv/hv_apic.c | 1 - > >> arch/x86/hyperv/hv_init.c | 21 +- > >> arch/x86/hyperv/hv_proc.c | 3 +- > >> arch/x86/hyperv/ivm.c | 1 - > >> arch/x86/hyperv/mmu.c | 1 - > >> arch/x86/hyperv/nested.c | 2 +- > >> arch/x86/include/asm/kvm_host.h | 3 +- > >> arch/x86/include/asm/mshyperv.h | 3 +- > >> arch/x86/include/asm/svm.h | 2 +- > >> arch/x86/kernel/cpu/mshyperv.c | 2 +- > >> arch/x86/kvm/vmx/hyperv_evmcs.h | 2 +- > >> arch/x86/kvm/vmx/vmx_onhyperv.h | 2 +- > >> arch/x86/mm/pat/set_memory.c | 2 - > >> drivers/clocksource/hyperv_timer.c | 2 +- > >> drivers/hv/hv_balloon.c | 4 +- > >> drivers/hv/hv_common.c | 2 +- > >> drivers/hv/hv_kvp.c | 2 +- > >> drivers/hv/hv_snapshot.c | 2 +- > >> drivers/hv/hyperv_vmbus.h | 2 +- > >> include/asm-generic/hyperv-tlfs.h | 9 + > >> include/asm-generic/mshyperv.h | 2 +- > >> include/clocksource/hyperv_timer.h | 2 +- > >> include/hyperv/hvgdk.h | 303 +++++++ > >> include/hyperv/hvgdk_ext.h | 46 + > >> include/hyperv/hvgdk_mini.h | 1295 ++++++++++++++++++++++++++++ > >> include/hyperv/hvhdk.h | 733 ++++++++++++++++ > >> include/hyperv/hvhdk_mini.h | 310 +++++++ > >> include/linux/hyperv.h | 11 +- > >> net/vmw_vsock/hyperv_transport.c | 2 +- > >> 32 files changed, 2729 insertions(+), 52 deletions(-) > >> create mode 100644 include/hyperv/hvgdk.h > >> create mode 100644 include/hyperv/hvgdk_ext.h > >> create mode 100644 include/hyperv/hvgdk_mini.h > >> create mode 100644 include/hyperv/hvhdk.h > >> create mode 100644 include/hyperv/hvhdk_mini.h > >> > >> -- > >> 2.34.1
