[v7,0/7] Introduce generic headers

Message

Oleksii Kurochko Jan. 26, 2024, 3:42 p.m. UTC

Some headers are common between several architectures, so the current patch series
provide them.

Another one reason to have them as generic is a simplification of adding support
necessary to make a complete Xen build as it was/is being done in the patch series [1]
and [2].

Also, instead of providing generic/stub headers, it was used
"#ifdef CONFIG_* #include <asm/*.h> #endif" instead of providing empty headers.

This patch series is a pre-requisite for "Enable build of full Xen for RISC-V" [3].

[1] https://lore.kernel.org/xen-devel/[e-mail]/
[2] https://lore.kernel.org/xen-devel/[e-mail]/
[3] https://lore.kernel.org/xen-devel/[e-mail]/
---
Changes in V7:
 - The following patches were dropped because of rebasing as they were merged
   to staging:
   - [PATCH v6 3/9] xen/asm-generic: introduce generic div64.h header
   - [PATCH v6 6/9] xen/asm-generic: introduce stub header softirq.h
   - [PATCH v6 7/9] xen: ifdef inclusion of <asm/grant_table.h> in <xen/grant_table.h>
   - [PATCH v6 8/9] xen/asm-generic: ifdef inclusion of <asm/mem_access.h>
- [PATCH v6 5/9] xen/asm-generic: introduce stub header numa.h was dropped becaus of
  the patch: "[PATCH v2] NUMA: no need for asm/numa.h when !NUMA"
- Drop definition of arch_monitor_domctl_event for PPC.
- define arch_monitor_domctl_event in asm-generic/monitor.h.
- Add "define HAS_ARCH_MONITOR_DOMCTL_EVENT" in arm/.../monitor.h as it has arch
  specific implementation.
- keeping DEVICE_PCI_HOSTBRIDGE available for every build based on the reply:
    https://lore.kernel.org/xen-devel/[e-mail]/
- add comment above enum device_type.h with explanation about DEV_TYPE_MAX.        
- drop #ifdef HAS_PCI around "(device_get_class(dev) == DEVICE_PCI_HOSTBRIDGE))" in ARM code.
- separate patch  "[PATCH v6 9/9] xen/asm-generic: introduce generic device.h" into 3 patches.
---
Changes in V6:
 - Fix the build script to work properly with EXTRA_FIXED_RANDCONFIG.
 - Introduce separate randconfig yaml with fixed configs for RISC-V.
 - Disable CONFIG_GRANT_TABLE and CONFIG_MEM_ACCESS for PPC and RISC-V.
 - Remove change in Kconfig/common for CONFIG_GRANT_TABLE and CONFIG_MEM_ACCESS.
 - Rebase on top of the latest staging. 
---
Changes in V5:
 - Update the patch series message as patch related to delay.h was merged.
 - Rebase on top of staging because half of the patches of the patch series were
   merged to staging branch.
 - Add A-by for some of the patches.
 - Add "depends on X86 || Arm" for CONFIG_GRANT_TABLE and CONFIG_MEM_ACCESS to be
   sure it won't be turned on by randconfig in CI.
 - Partly switch Arm and PPC to asm-generic/monitor.h.
 - Some other minor changes
---
Changes in V4:
 - Update the cover letter message
 - Add Reviewed-by/Acked-by for patches:
    [PATCH v3 01/14] xen/asm-generic: introduce stub header paging.h
    [PATCH v3 03/14] xen/asm-generic: introduce generic hypercall.h
    [PATCH v3 04/14] xen/asm-generic: introduce generic header iocap.h
    [PATCH v3 05/14] xen/asm-generic: introduce stub header <asm/random.h>
    [PATCH v3 06/14] xen/asm-generic: introduce generic header percpu.h
    [PATCH v3 07/14] xen/asm-generic: introduce generalized hardirq.h
    [PATCH v3 08/14] xen/asm-generic: introduce generic div64.h header
    [PATCH v3 09/14] xen/asm-generic: introduce generic header altp2m.h
    [PATCH v3 10/14] xen/asm-generic: introduce stub header monitor.h
    [PATCH v3 11/14] xen/asm-generic: introduce stub header numa.h
    [PATCH v3 12/14] xen/asm-generic: introduce stub header softirq.h
 - Fix some code style and minor issues.
 - Use asm-generic version of device.h for Arm and PPC.
---
Changes in V3:
 - Update the commit message of the cover letter.
 - Drop the following patch as it can be arch-specific enough:
   * [PATCH v2 09/15] xen/asm-generic: introduce generic header smp.h
 - Drop correspondent arch specific headers and use asm-generic version of
   a header.
 - Back to the patch series patches:
   * xen: ifdef inclusion of <asm/grant_table.h> in <xen/grant_table.h>
   * xen/asm-generic: ifdef inclusion of <asm/mem_access.h>
---
Changes in V2:
 - Update the commit message of the cover letter.
 - Drop the following patches because they are arch-specific or was sent as a separate patch:
   - xen/asm-generic: introduce stub header event.h
	 - xen/asm-generic: introduce stub header spinlock.h
	 - [PATCH v1 03/29] xen/asm-generic: introduce stub header cpufeature.h
	 - [PATCH v1 07/29] xen/asm-generic: introduce stub header guest_atomics.h
	 - [PATCH v1 10/29] xen/asm-generic: introduce stub header iommu.h
	 - [PATCH v1 12/29] xen/asm-generic: introduce stub header pci.h because separate patch was sent [5]
	 - [PATCH v1 14/29] xen/asm-generic: introduce stub header setup.h
	 - [PATCH v1 15/29] xen/asm-generic: introduce stub header xenoprof.h because of [3].
	 - [PATCH v1 16/29] xen/asm-generic: introduce stub header flushtlb.h
	 - [PATCH v1 22/29] xen/asm-generic: introduce stub header delay.h because of [3]
	 - [PATCH v1 23/29] xen/asm-generic: introduce stub header domain.h
	 - [PATCH v1 24/29] xen/asm-generic: introduce stub header guest_access.h
	 - [PATCH v1 25/29] xen/asm-generic: introduce stub header irq.h ( probably not so generic as I expected, I'll back to it if it will be necessary in the future )
	 - [PATCH v1 28/29] xen/asm-generic: introduce stub header p2m.h ( probably not so generic as I expected, I'll back to it if it will be necessary in the future )
 - For the rest of the patches please look at changes for each patch separately.
---
Oleksii Kurochko (7):
  automation: ensure values in EXTRA_FIXED_RANDCONFIG are separated by
    new line
  automation: introduce fixed randconfig for RISC-V
  xen/asm-generic: introduce stub header monitor.h
  xen/asm-generic: ifdef inclusion of <asm/mem_access.h>
  xen/asm-generic: introduce generic device.h
  xen/arm: switch Arm to use asm-generic/device.h
  xen/ppc: switch PPC to use asm-generic/device.h

 automation/gitlab-ci/build.yaml               |   8 +-
 .../gitlab-ci/riscv-fixed-randconfig.yaml     |   7 +
 automation/scripts/build                      |   6 +-
 xen/arch/arm/device.c                         |   5 +
 xen/arch/arm/domain_build.c                   |   2 +-
 xen/arch/arm/gic-v2.c                         |   4 +-
 xen/arch/arm/gic-v3.c                         |   6 +-
 xen/arch/arm/gic.c                            |   4 +-
 xen/arch/arm/include/asm/Makefile             |   1 +
 xen/arch/arm/include/asm/monitor.h            |  25 +---
 xen/arch/arm/p2m.c                            |   1 +
 xen/arch/arm/traps.c                          |   1 +
 xen/arch/ppc/configs/ppc64_defconfig          |   1 +
 xen/arch/ppc/include/asm/Makefile             |   1 +
 xen/arch/ppc/include/asm/device.h             |  53 --------
 xen/arch/ppc/include/asm/mem_access.h         |   5 -
 xen/arch/ppc/include/asm/monitor.h            |  28 +---
 xen/arch/ppc/stubs.c                          |   8 --
 xen/arch/riscv/configs/tiny64_defconfig       |   1 +
 .../asm => include/asm-generic}/device.h      | 128 ++++++++++++------
 xen/include/asm-generic/monitor.h             |  64 +++++++++
 xen/include/xen/mem_access.h                  |   2 +
 22 files changed, 186 insertions(+), 175 deletions(-)
 create mode 100644 automation/gitlab-ci/riscv-fixed-randconfig.yaml
 delete mode 100644 xen/arch/ppc/include/asm/device.h
 delete mode 100644 xen/arch/ppc/include/asm/mem_access.h
 rename xen/{arch/arm/include/asm => include/asm-generic}/device.h (76%)
 create mode 100644 xen/include/asm-generic/monitor.h