sbi/time: Make timer increment more accurate by reading the 'time' register as late as possible

1 files changed, 1 insertions, 2 deletions

diff --git a/src/lib/sbi/time.zig b/src/lib/sbi/time.zig
index 6abdd4e..eed5324 100644
--- a/src/lib/sbi/time.zig
+++ b/src/lib/sbi/time.zig
@@ -25,11 +25,10 @@ pub fn setTimer(stime_absolute: u64) !void {
 }
 
 pub fn interruptInMillis(millis: u64) !void {
-    const time = riscv.time.read();
-
     var cpus = try hwinfo.byKind(.cpus);
     const frequency = try cpus.next() orelse return error.NoCpusHwInfo;
     const cycles = frequency.value / 1000 * millis;
 
+    const time = riscv.time.read();
     try setTimer(time + cycles);
 }