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authorgVisor bot <gvisor-bot@google.com>2020-12-15 11:54:04 -0800
committergVisor bot <gvisor-bot@google.com>2020-12-15 11:54:04 -0800
commit5843a5007c79268ba9913a8e0dd3ec998a741d11 (patch)
tree11605755acad39e62ac2a01daefce8a798f1e8dd /pkg/sentry/platform/ring0
parentb15acae9a6e20a09a97b5fdfee5850469ff3b0ea (diff)
parentd0f8b3174e01cc14939d8f631e4415cf30925208 (diff)
Merge pull request #4722 from zhlhahaha:2010
PiperOrigin-RevId: 347660920
Diffstat (limited to 'pkg/sentry/platform/ring0')
-rw-r--r--pkg/sentry/platform/ring0/kernel_arm64.go6
-rw-r--r--pkg/sentry/platform/ring0/lib_arm64.go4
2 files changed, 8 insertions, 2 deletions
diff --git a/pkg/sentry/platform/ring0/kernel_arm64.go b/pkg/sentry/platform/ring0/kernel_arm64.go
index 90a7b8392..bffe27e5c 100644
--- a/pkg/sentry/platform/ring0/kernel_arm64.go
+++ b/pkg/sentry/platform/ring0/kernel_arm64.go
@@ -53,6 +53,12 @@ func IsCanonical(addr uint64) bool {
return addr <= 0x0000ffffffffffff || addr > 0xffff000000000000
}
+// SwitchToUser performs an eret.
+//
+// The return value is the exception vector.
+//
+// +checkescape:all
+//
//go:nosplit
func (c *CPU) SwitchToUser(switchOpts SwitchOpts) (vector Vector) {
storeAppASID(uintptr(switchOpts.UserASID))
diff --git a/pkg/sentry/platform/ring0/lib_arm64.go b/pkg/sentry/platform/ring0/lib_arm64.go
index ef0d8974d..29b3efd34 100644
--- a/pkg/sentry/platform/ring0/lib_arm64.go
+++ b/pkg/sentry/platform/ring0/lib_arm64.go
@@ -28,13 +28,13 @@ func FlushTlbAll()
// CPACREL1 returns the value of the CPACR_EL1 register.
func CPACREL1() (value uintptr)
-// FPCR returns the value of FPCR register.
+// GetFPCR returns the value of FPCR register.
func GetFPCR() (value uintptr)
// SetFPCR writes the FPCR value.
func SetFPCR(value uintptr)
-// FPSR returns the value of FPSR register.
+// GetFPSR returns the value of FPSR register.
func GetFPSR() (value uintptr)
// SetFPSR writes the FPSR value.