diff options
| author | Wei Hu <whu@FreeBSD.org> | 2024-06-11 10:05:21 +0000 |
|---|---|---|
| committer | Wei Hu <whu@FreeBSD.org> | 2024-06-11 10:05:21 +0000 |
| commit | e02d20ddff7f9f9509b28095459327bc183dab8a (patch) | |
| tree | d05f193414c105e14ca0f205c100f8821cc1c061 /sys/dev/hyperv | |
| parent | f65d0b18d9372b522e247c7bd58422a7ab3d30d8 (diff) | |
Diffstat (limited to 'sys/dev/hyperv')
| -rw-r--r-- | sys/dev/hyperv/vmbus/vmbus.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/sys/dev/hyperv/vmbus/vmbus.c b/sys/dev/hyperv/vmbus/vmbus.c index c1fa9107d3c2..f55f0329b017 100644 --- a/sys/dev/hyperv/vmbus/vmbus.c +++ b/sys/dev/hyperv/vmbus/vmbus.c @@ -147,6 +147,13 @@ SYSCTL_NODE(_hw, OID_AUTO, vmbus, CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, static int vmbus_pin_evttask = 1; SYSCTL_INT(_hw_vmbus, OID_AUTO, pin_evttask, CTLFLAG_RDTUN, &vmbus_pin_evttask, 0, "Pin event tasks to their respective CPU"); + +#if defined(__x86_64__) +static int hv_tlb_hcall = 1; +SYSCTL_INT(_hw_vmbus, OID_AUTO, tlb_hcall , CTLFLAG_RDTUN, + &hv_tlb_hcall, 0, "Use Hyper_V hyercall for tlb flush"); +#endif + uint32_t vmbus_current_version; static const uint32_t vmbus_version[] = { @@ -756,8 +763,19 @@ vmbus_synic_setup(void *xsc) if (VMBUS_PCPU_GET(sc, vcpuid, cpu) > hv_max_vp_index) hv_max_vp_index = VMBUS_PCPU_GET(sc, vcpuid, cpu); hv_cpu_mem = DPCPU_ID_PTR(cpu, hv_pcpu_mem); - *hv_cpu_mem = contigmalloc(PAGE_SIZE, M_DEVBUF, M_WAITOK | M_ZERO, + *hv_cpu_mem = contigmalloc(PAGE_SIZE, M_DEVBUF, M_NOWAIT | M_ZERO, 0ul, ~0ul, PAGE_SIZE, 0); + +#if defined(__x86_64__) + if (*hv_cpu_mem == NULL && hv_tlb_hcall) { + hv_tlb_hcall = 0; + if (bootverbose && sc) + device_printf(sc->vmbus_dev, + "cannot alloc contig memory for hv_pcpu_mem, " + "use system provided tlb flush call.\n"); + } +#endif + /* * Setup the SynIC message. */ @@ -1502,7 +1520,8 @@ vmbus_doattach(struct vmbus_softc *sc) sc->vmbus_flags |= VMBUS_FLAG_SYNIC; #if defined(__x86_64__) - smp_targeted_tlb_shootdown = &hyperv_vm_tlb_flush; + if (hv_tlb_hcall) + smp_targeted_tlb_shootdown = &hyperv_vm_tlb_flush; #endif /* |