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| author | Konstantin Belousov <kib@FreeBSD.org> | 2021-01-12 16:35:58 +0000 |
|---|---|---|
| committer | Konstantin Belousov <kib@FreeBSD.org> | 2021-06-12 16:58:02 +0000 |
| commit | a3a907abbf60203278167db59d2c1efd97f239a1 (patch) | |
| tree | e3a1e36e5f9352891314599e73a54e95d5138a19 | |
| parent | b96893a489796750b1515cc46c725928e023dfd2 (diff) | |
| download | src-a3a907abbf60203278167db59d2c1efd97f239a1.tar.gz src-a3a907abbf60203278167db59d2c1efd97f239a1.zip | |
hyperv: register intr handler as usermode-mapped if loaded as module
(cherry picked from commit fe7d7ac40881c9d01a54bf57fff71a3af199f237)
| -rw-r--r-- | sys/dev/hyperv/vmbus/vmbus.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/sys/dev/hyperv/vmbus/vmbus.c b/sys/dev/hyperv/vmbus/vmbus.c index d3568494405e..929eff33e7c9 100644 --- a/sys/dev/hyperv/vmbus/vmbus.c +++ b/sys/dev/hyperv/vmbus/vmbus.c @@ -45,6 +45,10 @@ __FBSDID("$FreeBSD$"); #include <sys/systm.h> #include <sys/taskqueue.h> +#include <vm/vm.h> +#include <vm/vm_param.h> +#include <vm/pmap.h> + #include <machine/bus.h> #include <machine/intr_machdep.h> #include <machine/metadata.h> @@ -139,6 +143,7 @@ SYSCTL_INT(_hw_vmbus, OID_AUTO, pin_evttask, CTLFLAG_RDTUN, &vmbus_pin_evttask, 0, "Pin event tasks to their respective CPU"); extern inthand_t IDTVEC(vmbus_isr), IDTVEC(vmbus_isr_pti); +#define VMBUS_ISR_ADDR trunc_page((uintptr_t)IDTVEC(vmbus_isr_pti)) uint32_t vmbus_current_version; @@ -980,6 +985,10 @@ vmbus_intr_setup(struct vmbus_softc *sc) vmbus_msg_task, sc); } +#if defined(__amd64__) && defined(KLD_MODULE) + pmap_pti_add_kva(VMBUS_ISR_ADDR, VMBUS_ISR_ADDR + PAGE_SIZE, true); +#endif + /* * All Hyper-V ISR required resources are setup, now let's find a * free IDT vector for Hyper-V ISR and set it up. @@ -987,6 +996,9 @@ vmbus_intr_setup(struct vmbus_softc *sc) sc->vmbus_idtvec = lapic_ipi_alloc(pti ? IDTVEC(vmbus_isr_pti) : IDTVEC(vmbus_isr)); if (sc->vmbus_idtvec < 0) { +#if defined(__amd64__) && defined(KLD_MODULE) + pmap_pti_remove_kva(VMBUS_ISR_ADDR, VMBUS_ISR_ADDR + PAGE_SIZE); +#endif device_printf(sc->vmbus_dev, "cannot find free IDT vector\n"); return ENXIO; } @@ -1007,6 +1019,10 @@ vmbus_intr_teardown(struct vmbus_softc *sc) sc->vmbus_idtvec = -1; } +#if defined(__amd64__) && defined(KLD_MODULE) + pmap_pti_remove_kva(VMBUS_ISR_ADDR, VMBUS_ISR_ADDR + PAGE_SIZE); +#endif + CPU_FOREACH(cpu) { if (VMBUS_PCPU_GET(sc, event_tq, cpu) != NULL) { taskqueue_free(VMBUS_PCPU_GET(sc, event_tq, cpu)); |