diff options
| author | lubinszARM <34124929+lubinszARM@users.noreply.github.com> | 2020-07-23 16:06:46 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-07-23 16:08:16 -0700 |
| commit | 4eb3c8c7e59b1f3dd0c0bfc253cd5c8c6067d05d (patch) | |
| tree | 04ecd35a99605c229b5bfc35901e62d3b9642d72 /pkg/sentry/platform | |
| parent | dd530eeeff09128d4c2428e1d6f24205a29e661e (diff) | |
kvm-tls-2:add the preservation of user-TLS in the Arm64 kvm platform
This patch load/save TLS for the container application.
Related issue: full context-switch supporting for Arm64 #1238
COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/2761 from lubinszARM:pr_tls_2 cb5dbca1c9c3f378002406da7a58887f9b5032b3
PiperOrigin-RevId: 322887044
Diffstat (limited to 'pkg/sentry/platform')
| -rw-r--r-- | pkg/sentry/platform/ring0/kernel_arm64.go | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/pkg/sentry/platform/ring0/kernel_arm64.go b/pkg/sentry/platform/ring0/kernel_arm64.go index ccacaea6b..fca3a5478 100644 --- a/pkg/sentry/platform/ring0/kernel_arm64.go +++ b/pkg/sentry/platform/ring0/kernel_arm64.go @@ -58,7 +58,13 @@ func (c *CPU) SwitchToUser(switchOpts SwitchOpts) (vector Vector) { regs.Pstate &= ^uint64(UserFlagsClear) regs.Pstate |= UserFlagsSet + + SetTLS(regs.TPIDR_EL0) + kernelExitToEl0() + + regs.TPIDR_EL0 = GetTLS() + vector = c.vecCode // Perform the switch. |