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feat(starry-kernel): add LKM support via kmod-loader integration #849

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Merged
ZR233 merged 8 commits into from
May 27, 2026
Merged

feat(starry-kernel): add LKM support via kmod-loader integration #849

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54f94dd
feat(starry-kernel): add LKM support via kmod-loader integration
CN-TangLin May 21, 2026
d152702
fix(starry-kernel): address LKM PR #849 review blocking issues
CN-TangLin May 22, 2026
2834474
docs(starry-kernel): add module-level documentation for kmod_loader
CN-TangLin May 22, 2026
6df5c32
fix(starry-kernel): address kmod review non-blocking suggestions
CN-TangLin May 22, 2026
bae0f06
fix(starry-kernel): use literal 0x80 for BPF_CALL opcode in verifier
CN-TangLin May 22, 2026
fc89771
fix(starry-kernel): rebase onto dev with kprobe+eBPF merged, resolve …
CN-TangLin May 27, 2026
69f4f2a
fix(starry-kernel): add cfg(ebpf) gate for perf_event module and trigger
CN-TangLin May 27, 2026
a8f36bb
ci: rebase onto latest dev, resolve Cargo.lock conflict
CN-TangLin May 27, 2026
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487 changes: 322 additions & 165 deletions Cargo.lock
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52 changes: 52 additions & 0 deletions components/axplat_crates/examples/hello-kernel/linker_x86_64.lds
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@@ -0,0 +1,52 @@
ENTRY(_start)
SECTIONS
{
. = 0xffff800000200000;
_skernel = .;

.text : ALIGN(4K) {
_stext = .;
*(.text.boot)
*(.text .text.*)
_etext = .;
}

.rodata : ALIGN(4K) {
_srodata = .;
*(.rodata .rodata.*)
_erodata = .;
}

.data : ALIGN(4K) {
_sdata = .;
*(.data .data.*)
*(.got .got.*)
}

. = ALIGN(4K);
_percpu_start = .;
_percpu_end = _percpu_start + SIZEOF(.percpu);
.percpu 0x0 : AT(_percpu_start) {
_percpu_load_start = .;
*(.percpu .percpu.*)
_percpu_load_end = .;
. = _percpu_load_start + ALIGN(64) * 1;
}
. = _percpu_end;
_edata = .;

.bss : AT(.) ALIGN(4K) {
*(.bss.stack)
. = ALIGN(4K);
_sbss = .;
*(.bss .bss.*)
*(COMMON)
_ebss = .;
}

_ekernel = .;

/DISCARD/ : {
*(.comment)
}
}
52 changes: 52 additions & 0 deletions components/axplat_crates/examples/irq-kernel/linker_x86_64.lds
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@@ -0,0 +1,52 @@
ENTRY(_start)
SECTIONS
{
. = 0xffff800000200000;
_skernel = .;

.text : ALIGN(4K) {
_stext = .;
*(.text.boot)
*(.text .text.*)
_etext = .;
}

.rodata : ALIGN(4K) {
_srodata = .;
*(.rodata .rodata.*)
_erodata = .;
}

.data : ALIGN(4K) {
_sdata = .;
*(.data .data.*)
*(.got .got.*)
}

. = ALIGN(4K);
_percpu_start = .;
_percpu_end = _percpu_start + SIZEOF(.percpu);
.percpu 0x0 : AT(_percpu_start) {
_percpu_load_start = .;
*(.percpu .percpu.*)
_percpu_load_end = .;
. = _percpu_load_start + ALIGN(64) * 1;
}
. = _percpu_end;
_edata = .;

.bss : AT(.) ALIGN(4K) {
*(.bss.stack)
. = ALIGN(4K);
_sbss = .;
*(.bss .bss.*)
*(COMMON)
_ebss = .;
}

_ekernel = .;

/DISCARD/ : {
*(.comment)
}
}
52 changes: 52 additions & 0 deletions components/axplat_crates/examples/smp-kernel/linker_x86_64.lds
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Original file line number Diff line number Diff line change
@@ -0,0 +1,52 @@
ENTRY(_start)
SECTIONS
{
. = 0xffff800000200000;
_skernel = .;

.text : ALIGN(4K) {
_stext = .;
*(.text.boot)
*(.text .text.*)
_etext = .;
}

.rodata : ALIGN(4K) {
_srodata = .;
*(.rodata .rodata.*)
_erodata = .;
}

.data : ALIGN(4K) {
_sdata = .;
*(.data .data.*)
*(.got .got.*)
}

. = ALIGN(4K);
_percpu_start = .;
_percpu_end = _percpu_start + SIZEOF(.percpu);
.percpu 0x0 : AT(_percpu_start) {
_percpu_load_start = .;
*(.percpu .percpu.*)
_percpu_load_end = .;
. = _percpu_load_start + ALIGN(64) * 1;
}
. = _percpu_end;
_edata = .;

.bss : AT(.) ALIGN(4K) {
*(.bss.stack)
. = ALIGN(4K);
_sbss = .;
*(.bss .bss.*)
*(COMMON)
_ebss = .;
}

_ekernel = .;

/DISCARD/ : {
*(.comment)
}
}
1 change: 1 addition & 0 deletions os/StarryOS/kernel/Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -133,6 +133,7 @@ ax-ipi = { workspace = true }
static-keys = "0.8"
ddebug = "0.5"
kprobe = "0.5"
kmod-loader = "0.2"
some-serial = { workspace = true, optional = true }
sg200x-bsp = { workspace = true, optional = true }
# 0.9 to match sg200x-bsp's internal tock-registers; cannot use workspace (0.10)
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2 changes: 1 addition & 1 deletion os/StarryOS/kernel/src/ebpf.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -1131,7 +1131,7 @@ impl BpfVm {
let class = insn.class();
if class == bpf_insn::BPF_JMP || class == bpf_insn::BPF_JMP32 {
let op = insn.code & 0xf0;
if op != bpf_insn::BPF_EXIT && op != bpf_insn::BPF_CALL_OP {
if op != bpf_insn::BPF_EXIT && op != 0x80 {
let target = pc as isize + 1 + insn.off as isize;
if target < 0 || target as usize >= insns.len() {
warn!("bpf verifier: jump out of bounds at pc={pc} target={target}");
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