LoongArch: add LoongArch support · Pull Request !128 · OpenHarmony/kernel_linux_6.6

LoongArch: enable ARCH_USES_PG_ARCH_X
LoongArch: enable ARCH_USES_HIGH_VMA_FLAGS
drm/loongson: Deduct 256M from memory to make display buf
drm/amdgpu: Adjust alignment setting for LoongArch architecture
LoongArch: Add __ARCH_WANT_NEW_STAT
LoongArch: Fix build error about abi change
LoongArch: Explicitly set -fdirect-access-external-data for vmlinux
LoongArch: Disable module from accessing external data directly
LoongArch: fix HT RX INT TRANS register not initialized
LoongArch: limit min pci msi-x/msi vector number when request more than 32 vectors
PCI: irq: Add early_param pci_irq_limit to limit pci irq numbers
LoongArch: KVM: Add PV IPI support on host side
LoongArch: KVM: Add PMU support
LoongArch: KVM: Add steal time support in kvm side
LoongArch: KVM: Add software breakpoint support
LoongArch: KVM: Add pv ipi support on kvm side
LoongArch: KVM: Add vcpu search support from physical cpuid
LoongArch: KVM: Add cpucfg area for kvm hypervisor
LoongArch: KVM: Add hypercall instruction emulation support
LoongArch/smp: Refine some ipi functions on LoongArch platform
LoongArch: KVM: Set reserved bits as zero in CPUCFG
LoongArch: KVM: Streamline kvm_check_cpucfg() and improve comments
LoongArch: KVM: Rename _kvm_get_cpucfg() to _kvm_get_cpucfg_mask()
LoongArch: KVM: Fix input validation of _kvm_get_cpucfg() & kvm_check_cpucfg()
LoongArch: KVM: Do not restart SW timer when it is expired
LoongArch: KVM: Start SW timer only when vcpu is blocking
LoongArch: Remove generic irq migration
LoongArch: KVM: Add LASX (256bit SIMD) support
LoongArch: KVM: Add LSX (128bit SIMD) support
LoongArch: KVM: Fix timer emulation with oneshot mode
LoongArch: KVM: Remove kvm_acquire_timer() before entering guest
LoongArch: KVM: Allow to access HW timer CSR registers always
LoongArch: KVM: Remove SW timer switch when vcpu is halt polling
LoongArch: KVM: Optimization for memslot hugepage checking
LoongArch: KVM: Add maintainers for LoongArch KVM
LoongArch: KVM: Supplement kvm document about LoongArch-specific part
LoongArch: KVM: Implement vcpu world switch
LoongArch: KVM: Implement kvm exception vectors
LoongArch: KVM: Implement handle fpu exception
LoongArch: KVM: Implement handle mmio exception
LoongArch: KVM: Implement handle gspr exception
LoongArch: KVM: Implement handle idle exception
LoongArch: KVM: Implement handle iocsr exception
LoongArch: KVM: Implement kvm mmu operations
LoongArch: KVM: Implement virtual machine tlb operations
LoongArch: KVM: Implement vcpu timer operations
LoongArch: KVM: Implement misc vcpu related interfaces
LoongArch: KVM: Implement vcpu load and vcpu put operations
LoongArch: KVM: Implement vcpu interrupt operations
LoongArch: KVM: Implement fpu operations for vcpu
LoongArch: KVM: Implement basic vcpu ioctl interfaces
LoongArch: KVM: Implement basic vcpu interfaces
LoongArch: KVM: Add vcpu related header files
LoongArch: KVM: Implement VM related functions
LoongArch: KVM: Implement kvm hardware enable, disable interface
LoongArch: KVM: Implement kvm module related interface
LoongArch: KVM: Add kvm related header files
LoongArch: KVM: Implement handle csr exception
LoongArch: kexec: Add compatibility with old interfaces
loongarch/kernel: Fix loongarch compilation error
LoongArch: fix some PCIE card not scanning properly
LoongArch: Fix secondary bridge routing errors
LoongArch: fix ls2k500 bmc not work when installing iso
LoongArch: fix KASLR can not be disabled by nokaslr when boot from old BPI
irqchip/loongson-pch-pic: Update interrupt registration policy
irqchip/loongson-pch-pic: 7a1000 int_clear reg must use 64bit write.
irqchip/loongson-eiointc: Add virt extension support
LoongArch: fix efi map page table error
LoongArch: fix boot error caused by ioremap_page_range error
LoongArch: Fixed EIOINTC structure members
LoongArch: Fix virtual machine startup error
LoongArch: Old BPI compatibility
LoongArch: Old BPI compatibility
LoongArch: enable CONFIG_DEBUG_INFO_BTF by default
LoongArch: defconfig: Enable a large number of configurations
LoongArch: KVM: Enable kvm config and add the makefile
LoongArch: defconfig: enable CONFIG_FB_LS2K500=m.
LoongArch: Add steal time support in guest side
LoongArch: Add pv ipi support on guest kernel side
LoongArch: add kernel setvirtmap for runtime
LoongArch: Adapted SECTION_SIZE_BITS with page size
irqchip/loongson-eiointc: Remove explicit interrupt affinity restore on resume
irqchip/loongson-eiointc: Skip handling if there is no pending irq
ipmi: add ls2k500 bmc ipmi support.
fbdev: add ls2k500sfb driver for ls2k500 bmc.
drm/radeon: Workaround radeon driver bug for Loongson
Documentation: KVM: Add hypercall for LoongArch
cpufreq: Add cpufreq driver for LoongArch

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### 一、内容说明（相关的Issue）

https://gitee.com/openharmony/kernel_linux_6.6/issues/IBMNW4

### 二、建议测试周期和提测地址  
  建议测试完成时间：xxxx.xx.xx  
  投产上线时间：xxxx.xx.xx  
  提测地址：CI环境/压测环境  
  测试账号：

### 三、变更内容
  * 3.1 关联PR列表

* 3.2 数据库和部署说明  
    1. 常规更新 
    2. 重启unicorn
    3. 重启sidekiq
    4. 迁移任务：是否有迁移任务，没有写 "无"
    5. rake脚本：`bundle exec xxx RAILS_ENV = production`；没有写 "无"

* 3.4 其他技术优化内容（做了什么，变更了什么）
    - 重构了 xxxx 代码
    - xxxx 算法优化

* 3.5 废弃通知（什么字段、方法弃用？）

* 3.6  后向不兼容变更（是否有无法向后兼容的变更？）

### 四、研发自测点（自测哪些？冒烟用例全部自测？）
  自测测试结论：

### 五、测试关注点（需要提醒QA重点关注的、可能会忽略的地方）
  检查点：

| 需求名称 | 是否影响xx公共模块 | 是否需要xx功能 | 需求升级是否依赖其他子产品 |
|------|------------|----------|---------------|
| xxx  | 否          | 需要       | 不需要           |
|      |            |          |               |

接口测试：

性能测试：

并发测试：

其他：

类型	指派人员	状态
审查	weiyj 朱佳鑫 lijiawei	进行中 (0/1人)
测试	openharmony_ci 已测试通过	已完成 (1/1人)

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