From: Wei Liu <wei.liu@kernel.org>
To: Linux on Hyper-V List <linux-hyperv@vger.kernel.org>
Cc: virtualization@lists.linux-foundation.org,
Linux Kernel List <linux-kernel@vger.kernel.org>,
Michael Kelley <mikelley@microsoft.com>,
Vineeth Pillai <viremana@linux.microsoft.com>,
Sunil Muthuswamy <sunilmut@microsoft.com>,
Nuno Das Neves <nunodasneves@linux.microsoft.com>,
Wei Liu <wei.liu@kernel.org>, Joerg Roedel <jroedel@suse.de>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
"K. Y. Srinivasan" <kys@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Stephen Hemminger <sthemmin@microsoft.com>,
Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>,
iommu@lists.linux-foundation.org (open list:IOMMU DRIVERS)
Subject: [PATCH v4 04/17] iommu/hyperv: don't setup IRQ remapping when running as root
Date: Wed, 6 Jan 2021 20:33:37 +0000 [thread overview]
Message-ID: <20210106203350.14568-5-wei.liu@kernel.org> (raw)
In-Reply-To: <20210106203350.14568-1-wei.liu@kernel.org>
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 <jroedel@suse.de>
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
next prev parent reply other threads:[~2021-01-06 20:35 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-06 20:33 [PATCH v4 00/17] Introducing Linux root partition support for Microsoft Hypervisor Wei Liu
2021-01-06 20:33 ` [PATCH v4 01/17] asm-generic/hyperv: change HV_CPU_POWER_MANAGEMENT to HV_CPU_MANAGEMENT Wei Liu
2021-01-06 20:33 ` [PATCH v4 02/17] x86/hyperv: detect if Linux is the root partition Wei Liu
2021-01-06 20:33 ` [PATCH v4 03/17] Drivers: hv: vmbus: skip VMBus initialization if Linux is root Wei Liu
2021-01-06 20:33 ` Wei Liu [this message]
2021-01-06 20:33 ` [PATCH v4 05/17] clocksource/hyperv: use MSR-based access if running as root Wei Liu
2021-01-06 20:33 ` [PATCH v4 06/17] x86/hyperv: allocate output arg pages if required Wei Liu
2021-01-06 20:33 ` [PATCH v4 07/17] x86/hyperv: extract partition ID from Microsoft Hypervisor if necessary Wei Liu
2021-01-06 20:33 ` [PATCH v4 08/17] x86/hyperv: handling hypercall page setup for root Wei Liu
2021-01-06 20:33 ` [PATCH v4 09/17] x86/hyperv: provide a bunch of helper functions Wei Liu
2021-01-06 20:33 ` [PATCH v4 10/17] x86/hyperv: implement and use hv_smp_prepare_cpus Wei Liu
2021-01-06 20:33 ` [PATCH v4 11/17] asm-generic/hyperv: update hv_msi_entry Wei Liu
2021-01-06 20:33 ` [PATCH v4 12/17] asm-generic/hyperv: update hv_interrupt_entry Wei Liu
2021-01-06 20:33 ` [PATCH v4 13/17] asm-generic/hyperv: introduce hv_device_id and auxiliary structures Wei Liu
2021-01-06 20:33 ` [PATCH v4 14/17] asm-generic/hyperv: import data structures for mapping device interrupts Wei Liu
2021-01-06 20:33 ` [PATCH v4 15/17] x86/hyperv: implement an MSI domain for root partition Wei Liu
2021-01-06 22:21 ` kernel test robot
2021-01-07 15:05 ` Wei Liu
2021-01-06 20:33 ` [PATCH v4 16/17] x86/ioapic: export a few functions and data structures via io_apic.h Wei Liu
2021-01-09 16:38 ` Wei Liu
2021-01-06 20:33 ` [PATCH v4 17/17] x86/hyperv: handle IO-APIC when running as root Wei Liu
2021-01-09 16:45 ` Wei Liu
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