Commit 77047547 authored by Stefan Lankes's avatar Stefan Lankes Committed by Stefan Lankes
Browse files

use cpuid to determine if the kernel runs on a hypervisor

- requires latest x86 crate
parent 29452bb1
......@@ -17,7 +17,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "cc"
version = "1.0.53"
version = "1.0.54"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
......@@ -44,10 +44,10 @@ version = "0.2.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"num-complex 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
"num-integer 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
"num-iter 0.1.40 (registry+https://github.com/rust-lang/crates.io-index)",
"num-integer 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)",
"num-iter 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)",
"num-rational 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
"num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
"num-traits 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
......@@ -56,7 +56,7 @@ version = "0.2.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"autocfg 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
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"num-traits 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
......@@ -64,28 +64,28 @@ name = "num-derive"
version = "0.3.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"proc-macro2 1.0.13 (registry+https://github.com/rust-lang/crates.io-index)",
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"syn 1.0.22 (registry+https://github.com/rust-lang/crates.io-index)",
"proc-macro2 1.0.18 (registry+https://github.com/rust-lang/crates.io-index)",
"quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
"syn 1.0.31 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "num-integer"
version = "0.1.42"
version = "0.1.43"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"autocfg 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
"num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
"num-traits 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
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[[package]]
name = "num-iter"
version = "0.1.40"
version = "0.1.41"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
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"num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
"num-integer 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)",
"num-traits 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
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[[package]]
......@@ -94,13 +94,13 @@ version = "0.2.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"autocfg 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
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"num-traits 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
"num-integer 0.1.43 (registry+https://github.com/rust-lang/crates.io-index)",
"num-traits 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
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[[package]]
name = "num-traits"
version = "0.2.11"
version = "0.2.12"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"autocfg 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
......@@ -108,7 +108,7 @@ dependencies = [
[[package]]
name = "proc-macro2"
version = "1.0.13"
version = "1.0.18"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
......@@ -116,19 +116,19 @@ dependencies = [
[[package]]
name = "quote"
version = "1.0.6"
version = "1.0.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
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"proc-macro2 1.0.18 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "raw-cpuid"
version = "8.0.0"
version = "8.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
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"cc 1.0.54 (registry+https://github.com/rust-lang/crates.io-index)",
"rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
]
......@@ -149,8 +149,8 @@ dependencies = [
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"num 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
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"x86 0.33.0 (registry+https://github.com/rust-lang/crates.io-index)",
"num-traits 0.2.12 (registry+https://github.com/rust-lang/crates.io-index)",
"x86 0.34.0 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
......@@ -168,11 +168,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "syn"
version = "1.0.22"
version = "1.0.31"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
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......@@ -183,35 +183,35 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "x86"
version = "0.33.0"
version = "0.34.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
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......@@ -47,6 +47,7 @@ static mut SUPPORTS_TSC_DEADLINE: bool = false;
static mut SUPPORTS_X2APIC: bool = false;
static mut SUPPORTS_XSAVE: bool = false;
static mut SUPPORTS_FSGS: bool = false;
static mut RUN_ON_HYPERVISOR: bool = false;
static mut TIMESTAMP_FUNCTION: unsafe fn() -> u64 = get_timestamp_rdtsc;
#[repr(C, align(16))]
......@@ -535,6 +536,9 @@ impl fmt::Display for CpuFeaturePrinter {
if self.feature_info.has_x2apic() {
write!(f, "X2APIC ")?;
}
if self.feature_info.has_hypervisor() {
write!(f, "HYPERVISOR ")?;
}
if self.extended_feature_info.has_avx2() {
write!(f, "AVX2 ")?;
......@@ -599,8 +603,7 @@ pub fn run_on_hypervisor() -> bool {
if environment::is_uhyve() {
true
} else {
let cpuid = CpuId::new();
cpuid.get_hypervisor_info().is_some()
unsafe { RUN_ON_HYPERVISOR }
}
}
......@@ -731,6 +734,7 @@ pub fn detect_features() {
SUPPORTS_TSC_DEADLINE = feature_info.has_tsc_deadline();
SUPPORTS_X2APIC = feature_info.has_x2apic();
SUPPORTS_XSAVE = feature_info.has_xsave();
RUN_ON_HYPERVISOR = feature_info.has_hypervisor();
SUPPORTS_FSGS = extended_feature_info.has_fsgsbase();
if extended_function_info.has_rdtscp() {
......
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