Improve check for Apple M1 silicon under Rosetta
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9255ae334d
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@ -1438,6 +1438,25 @@ fn wait_for_supermajority(
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Ok(true)
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}
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fn is_rosetta_emulated() -> bool {
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#[cfg(target_os = "macos")]
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{
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use std::str::FromStr;
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std::process::Command::new("sysctl")
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.args(&["-in", "sysctl.proc_translated"])
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.output()
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.map_err(|_| ())
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.and_then(|output| String::from_utf8(output.stdout).map_err(|_| ()))
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.and_then(|stdout| u8::from_str(stdout.trim()).map_err(|_| ()))
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.map(|enabled| enabled == 1)
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.unwrap_or(false)
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}
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#[cfg(not(target_os = "macos"))]
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{
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false
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}
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}
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fn report_target_features() {
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warn!(
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"CUDA is {}abled",
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@ -1448,21 +1467,7 @@ fn report_target_features() {
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}
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);
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// We exclude Mac OS here to be compatible with computers that have Mac M1 chips.
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// For these computers, one must install rust/cargo/brew etc. using Rosetta 2,
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// which allows them to run software targeted for x86_64 on an aarch64.
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// Hence the code below will run on these machines (target_arch="x86_64")
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// if we don't exclude with target_os="macos".
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//
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// It's going to require more more work to get Solana building
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// on Mac M1's without Rosetta,
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// and when that happens we should remove this
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// (the feature flag for code targeting that is target_arch="aarch64")
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#[cfg(all(
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any(target_arch = "x86", target_arch = "x86_64"),
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not(target_os = "macos")
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))]
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{
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if !is_rosetta_emulated() {
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unsafe { check_avx() };
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}
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}
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@ -1470,7 +1475,7 @@ fn report_target_features() {
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// Validator binaries built on a machine with AVX support will generate invalid opcodes
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// when run on machines without AVX causing a non-obvious process abort. Instead detect
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// the mismatch and error cleanly.
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#[allow(dead_code)]
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#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
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#[target_feature(enable = "avx")]
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unsafe fn check_avx() {
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if is_x86_feature_detected!("avx") {
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@ -1483,6 +1488,9 @@ unsafe fn check_avx() {
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}
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}
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#[cfg(not(any(target_arch = "x86", target_arch = "x86_64")))]
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unsafe fn check_avx() {}
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// Get the activated stake percentage (based on the provided bank) that is visible in gossip
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fn get_stake_percent_in_gossip(bank: &Bank, cluster_info: &ClusterInfo, log: bool) -> u64 {
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let mut online_stake = 0;
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