diff options
Diffstat (limited to 'pkg/ring0/kernel_arm64.go')
| -rw-r--r-- | pkg/ring0/kernel_arm64.go | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/pkg/ring0/kernel_arm64.go b/pkg/ring0/kernel_arm64.go index c05284641..41909b3a0 100644 --- a/pkg/ring0/kernel_arm64.go +++ b/pkg/ring0/kernel_arm64.go @@ -62,6 +62,8 @@ func IsCanonical(addr uint64) bool { //go:nosplit func (c *CPU) SwitchToUser(switchOpts SwitchOpts) (vector Vector) { storeAppASID(uintptr(switchOpts.UserASID)) + storeEl0Fpstate(switchOpts.FloatingPointState) + if switchOpts.Flush { FlushTlbByASID(uintptr(switchOpts.UserASID)) } @@ -71,13 +73,17 @@ func (c *CPU) SwitchToUser(switchOpts SwitchOpts) (vector Vector) { regs.Pstate &= ^uint64(PsrFlagsClear) regs.Pstate |= UserFlagsSet - EnableVFP() - LoadFloatingPoint(switchOpts.FloatingPointState) + fpDisableTrap := CPACREL1() + if fpDisableTrap != 0 { + FPSIMDEnableTrap() + } kernelExitToEl0() - SaveFloatingPoint(switchOpts.FloatingPointState) - DisableVFP() + fpDisableTrap = CPACREL1() + if fpDisableTrap != 0 { + SaveFloatingPoint(switchOpts.FloatingPointState) + } vector = c.vecCode |