xu_zh

看到CM4的设备树已经在[orange-pi-6.6-rk35xx](https://github.com/orangepi-xunlong/linux-orangepi/blob/orange-pi-6.6-rk35xx/arch/arm64/boot/dts/rockchip/rk3566-orangepi-cm4-v1.4.dts)分支了，以及同样是RK3566的3B很早就支持了build 6.6的内核 b44a27562bcd377969aff68bf383875d6700e004 尝试了强行给KERNEL_TARGET加上current目标，编译的内核看起来可以正常工作 https://github.com/orangepi-xunlong/orangepi-build/blob/f11df9bf0d0bd57f6c968b4c520c2ced0517baeb/external/config/boards/orangepicm4.conf#L5 已测试的外设： - nvme硬盘(pcie2x1) - wifi - usb - 有线网卡 所以为什么没有官方支持CM4的current目标？

Add test for https://github.com/OpenXiangShan/XiangShan/pull/4044 Example log: ``` The first instruction of core 0 has commited. Difftest enabled. Setup Hello, World @ 0! Test === [0] Inject metaArray === ECC inject...

fix(ICache): do not check meta(1) parity if !s1_doubleline

1

if `!s1_doubleline`, `s1_waymasks(1)` is invalid and should not be checked

fix(ICache,Perf): correct topdown.itlbMissBubble

1

`itlbMissBubble` should be: - prefetchPipe has a pending itlb miss - and, wayLookup is empty. This means mainPipe will have to wait itlb refill and send response to prefetchPipe ->...

The original design allows 0 for enums like `ExceptionVec`, we use 0 for `None` and one-hot values for each exception, but in this case, `Vec[Bool]` may be preferred. When using...

If an `WayLookup` entry is being updated, we should not read it (i.e. read.valid should be false) Note that this is not necessary in current design: - when update is...

WIP Also encode illegal instrution exception to `ExceptionType` & remove `IBufferExceptionType` NOTE: `WayLookup` / `IBuffer` entries will add 1 extra bit. NOTE: ICache has auto-refetch as error-recovery mechanism, so hardware...

this allows us better utilize nix cache (e.g. in mirrors.ustc.edu.cn)

area(Bpu): move BaseTable from Tage to MainBtb

4

In the original design we use a counter for each possible instruction, so in total we have 64/2 = 32 counters each set. But mbtb can only identify 8 branches...

feat(log): add logback for better compile-time logging

1

Basically redo #4015 on kunminghu-v3, with some adjustments. Purpose & principle (from #4015): > The main purpose of using a logging framework is to switch compile-time logging levels easily. At...