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Diffstat (limited to 'pkg/sentry/platform/ring0/kernel.go')
-rw-r--r--pkg/sentry/platform/ring0/kernel.go22
1 files changed, 16 insertions, 6 deletions
diff --git a/pkg/sentry/platform/ring0/kernel.go b/pkg/sentry/platform/ring0/kernel.go
index 021693791..264be23d3 100644
--- a/pkg/sentry/platform/ring0/kernel.go
+++ b/pkg/sentry/platform/ring0/kernel.go
@@ -19,8 +19,8 @@ package ring0
// N.B. that constraints on KernelOpts must be satisfied.
//
//go:nosplit
-func (k *Kernel) Init(opts KernelOpts) {
- k.init(opts)
+func (k *Kernel) Init(opts KernelOpts, maxCPUs int) {
+ k.init(opts, maxCPUs)
}
// Halt halts execution.
@@ -49,6 +49,11 @@ func (defaultHooks) KernelException(Vector) {
// kernelSyscall is a trampoline.
//
+// When in amd64, it is called with %rip on the upper half, so it can
+// NOT access to any global data which is not mapped on upper and must
+// call to function pointers or interfaces to switch to the lower half
+// so that callee can access to global data.
+//
// +checkescape:hard,stack
//
//go:nosplit
@@ -58,6 +63,11 @@ func kernelSyscall(c *CPU) {
// kernelException is a trampoline.
//
+// When in amd64, it is called with %rip on the upper half, so it can
+// NOT access to any global data which is not mapped on upper and must
+// call to function pointers or interfaces to switch to the lower half
+// so that callee can access to global data.
+//
// +checkescape:hard,stack
//
//go:nosplit
@@ -68,10 +78,10 @@ func kernelException(c *CPU, vector Vector) {
// Init initializes a new CPU.
//
// Init allows embedding in other objects.
-func (c *CPU) Init(k *Kernel, hooks Hooks) {
- c.self = c // Set self reference.
- c.kernel = k // Set kernel reference.
- c.init() // Perform architectural init.
+func (c *CPU) Init(k *Kernel, cpuID int, hooks Hooks) {
+ c.self = c // Set self reference.
+ c.kernel = k // Set kernel reference.
+ c.init(cpuID) // Perform architectural init.
// Require hooks.
if hooks != nil {