Enum VmmError 

pub enum VmmError {
    InvalidCertificatePageLength = 1,
    RateLimitRetryRequest = 2,
    Unknown = 3,
}

An error representingthe upper 32 bits of a SW_EXITINFO2 field set by the VMM.

Variants

InvalidCertificatePageLength = 1

If there are not enough guest pages to hold the certificate table and certificate data, the hypervisor will return the required number of pages needed to hold the certificate table and certificate data in the RBX register and set the SW_EXITINFO2 field to 0x0000000100000000.

RateLimitRetryRequest = 2

It is not expected that a guest would issue many Guest Request NAE events. However, access to the SNP firmware is a sequential and synchronous operation. To avoid the possibility of a guest creating a denial-of-service attack against the SNP firmware, it is recommended that some form of rate limiting be implemented should it be detected that a high number of Guest Request NAE events are being issued. To allow for this, the hypervisor may set the SW_EXITINFO2 field to 0x0000000200000000, which will inform the guest to retry the request.

Unknown = 3

Nothing more implemented yet.

Trait Implementations

impl Debug for VmmError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for VmmError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for VmmError

Use the default implementations for std::error::Error here.

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<VmmError> for UserApiError

fn from(value: VmmError) -> Self

Converts to this type from the input type.

impl From<u32> for VmmError

fn from(value: u32) -> Self

Takes a raw u32 and translates it into the correlated VmmError type.

• value - The raw u32 value which we would like to interpret.

Example

use sev::error::VmmError;
let raw_value: u32 = 0x1u32;
let outcome: VmmError = VmmError::from(raw_value);
assert_eq!(outcome, VmmError::InvalidCertificatePageLength);

impl From<u64> for VmmError

fn from(value: u64) -> Self

Takes a raw u64 and translates it into the correlated VmmError type.

• value - The raw u64 value which we would like to interpret.

Example

use sev::error::VmmError;
let raw_value: u64 = 0x100000000;
let outcome: VmmError = VmmError::from(raw_value);
assert_eq!(outcome, VmmError::InvalidCertificatePageLength);

impl Ord for VmmError

fn cmp(&self, other: &VmmError) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for VmmError

fn eq(&self, other: &VmmError) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for VmmError

fn partial_cmp(&self, other: &VmmError) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Eq for VmmError

impl StructuralPartialEq for VmmError