RE: [PATCH v5 04/16] iommu/hyperv: don't setup IRQ remapping when running as root
From: Michael Kelley <hidden>
Date: 2021-01-26 10:41:38
Also in:
linux-iommu, lkml, virtualization
From: Wei Liu <wei.liu@kernel.org> Sent: Wednesday, January 20, 2021 4:01 AM
quoted hunk ↗ jump to hunk
The IOMMU code needs more work. We're sure for now the IRQ remapping hooks are not applicable when Linux is the root partition. Signed-off-by: Wei Liu <wei.liu@kernel.org> Acked-by: Joerg Roedel <redacted> Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com> --- drivers/iommu/hyperv-iommu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)diff --git a/drivers/iommu/hyperv-iommu.c b/drivers/iommu/hyperv-iommu.c index 1d21a0b5f724..b7db6024e65c 100644 --- a/drivers/iommu/hyperv-iommu.c +++ b/drivers/iommu/hyperv-iommu.c@@ -20,6 +20,7 @@ #include <asm/io_apic.h> #include <asm/irq_remapping.h> #include <asm/hypervisor.h> +#include <asm/mshyperv.h> #include "irq_remapping.h"@@ -122,7 +123,7 @@ static int __init hyperv_prepare_irq_remapping(void) if (!hypervisor_is_type(X86_HYPER_MS_HYPERV) || x86_init.hyper.msi_ext_dest_id() || - !x2apic_supported()) + !x2apic_supported() || hv_root_partition) return -ENODEV; fn = irq_domain_alloc_named_id_fwnode("HYPERV-IR", 0); --2.20.1
Reviewed-by: Michael Kelley <redacted>