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This commit is contained in:
Loïc Grégoire
2026-10-07 18:03:06 -04:00
parent 6cd9117a05
commit 619c373d47
78 changed files with 1676 additions and 1118 deletions
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src/platform/pc/smp.zig
+9 -5
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@@ -23,7 +23,7 @@ const start_stack = ke.ExportedCpuLocal(usize, 0, "ap_start_stack");
pub const start_thread = ke.CpuLocal(*ke.Thread, undefined);
var aps_booted: std.atomic.Value(usize) = .init(0);
var aps_booted = std.atomic.Value(usize).init(0);
const ApData = extern struct {
entry: usize align(1),
@@ -77,15 +77,18 @@ pub fn init() linksection(r.init) void {
.Unknown => false,
};
const init_delay: r.Nanoseconds = .init(
const init_delay = r.Nanoseconds.init(
if (skip_delay) 0 else std.time.ns_per_ms * 10,
);
const sipi_delay: r.Nanoseconds = .init(
const sipi_delay = r.Nanoseconds.init(
if (skip_delay) std.time.ns_per_us * 10 else std.time.ns_per_us * 300,
);
const page: [*]u8 = @ptrFromInt(mm.p2v(0x8000));
@memcpy(page[0..trampoline_size], @as([*]u8, @ptrFromInt(trampoline_start)));
@memcpy(
page[0..trampoline_size],
@as([*]u8, @ptrFromInt(trampoline_start)),
);
const data_offset = @intFromPtr(&AP_TRAMPOLINE_DATA) - trampoline_start;
const data_phys: *ApData = @ptrFromInt(mm.p2v(0x8000 + data_offset));
@@ -97,7 +100,8 @@ pub fn init() linksection(r.init) void {
// Allocate per-cpu offsets for CPU-local data.
kep.impl.cpu_offsets = @ptrCast(offsets);
const percpu_size = @intFromPtr(&__percpu_end) - @intFromPtr(&__percpu_start);
const percpu_size = @intFromPtr(&__percpu_end) -
@intFromPtr(&__percpu_start);
log.info("per-CPU data size: {} bytes", .{percpu_size});