diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2020-07-23 00:00:09 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-07-24 15:05:01 +0200 |
| commit | 72c3c0fe54a3f3ddea8f5ca468ddf9deaf2100b7 (patch) | |
| tree | 4a1930a215409c143c23630e89d0259675da7d5b /arch/x86/kvm/x86.c | |
| parent | a27a0a55495cdde4b8d98f82460dc46eb44777fd (diff) | |
x86/kvm: Use generic xfer to guest work function
Use the generic infrastructure to check for and handle pending work before
transitioning into guest mode.
This now handles TIF_NOTIFY_RESUME as well which was ignored so
far. Handling it is important as this covers task work and task work will
be used to offload the heavy lifting of POSIX CPU timers to thread context.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200722220520.979724969@linutronix.de
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 88c593f83b28..82d4a9e88908 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -56,6 +56,7 @@ #include <linux/sched/stat.h> #include <linux/sched/isolation.h> #include <linux/mem_encrypt.h> +#include <linux/entry-kvm.h> #include <trace/events/kvm.h> @@ -1587,7 +1588,7 @@ EXPORT_SYMBOL_GPL(kvm_emulate_wrmsr); bool kvm_vcpu_exit_request(struct kvm_vcpu *vcpu) { return vcpu->mode == EXITING_GUEST_MODE || kvm_request_pending(vcpu) || - need_resched() || signal_pending(current); + xfer_to_guest_mode_work_pending(); } EXPORT_SYMBOL_GPL(kvm_vcpu_exit_request); @@ -8681,15 +8682,11 @@ static int vcpu_run(struct kvm_vcpu *vcpu) break; } - if (signal_pending(current)) { - r = -EINTR; - vcpu->run->exit_reason = KVM_EXIT_INTR; - ++vcpu->stat.signal_exits; - break; - } - if (need_resched()) { + if (xfer_to_guest_mode_work_pending()) { srcu_read_unlock(&kvm->srcu, vcpu->srcu_idx); - cond_resched(); + r = xfer_to_guest_mode_handle_work(vcpu); + if (r) + return r; vcpu->srcu_idx = srcu_read_lock(&kvm->srcu); } } |