From: Nuno Das Neves <nunodasneves@linux.microsoft.com>
To: linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org,
x86@kernel.org, linux-arm-kernel@lists.infradead.org,
linux-arch@vger.kernel.org
Cc: patches@lists.linux.dev, mikelley@microsoft.com,
kys@microsoft.com, wei.liu@kernel.org,
gregkh@linuxfoundation.org, haiyangz@microsoft.com,
decui@microsoft.com, apais@linux.microsoft.com,
Tianyu.Lan@microsoft.com, ssengar@linux.microsoft.com,
mukeshrathor@microsoft.com, stanislav.kinsburskiy@gmail.com,
jinankjain@linux.microsoft.com, vkuznets@redhat.com,
tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
dave.hansen@linux.intel.com, hpa@zytor.com, will@kernel.org,
catalin.marinas@arm.com
Subject: [PATCH v4 04/15] asm-generic/mshyperv: Introduce hv_recommend_using_aeoi()
Date: Fri, 29 Sep 2023 11:01:30 -0700 [thread overview]
Message-ID: <1696010501-24584-5-git-send-email-nunodasneves@linux.microsoft.com> (raw)
In-Reply-To: <1696010501-24584-1-git-send-email-nunodasneves@linux.microsoft.com>
Factor out logic for determining if we should set the auto eoi flag in SINT
register.
Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com>
Reviewed-by: Wei Liu <wei.liu@kernel.org>
---
drivers/hv/hv.c | 12 +-----------
include/asm-generic/mshyperv.h | 13 +++++++++++++
2 files changed, 14 insertions(+), 11 deletions(-)
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c
index 5ea104c61fa7..d7869205dcbe 100644
--- a/drivers/hv/hv.c
+++ b/drivers/hv/hv.c
@@ -315,17 +315,7 @@ void hv_synic_enable_regs(unsigned int cpu)
shared_sint.vector = vmbus_interrupt;
shared_sint.masked = false;
-
- /*
- * On architectures where Hyper-V doesn't support AEOI (e.g., ARM64),
- * it doesn't provide a recommendation flag and AEOI must be disabled.
- */
-#ifdef HV_DEPRECATING_AEOI_RECOMMENDED
- shared_sint.auto_eoi =
- !(ms_hyperv.hints & HV_DEPRECATING_AEOI_RECOMMENDED);
-#else
- shared_sint.auto_eoi = 0;
-#endif
+ shared_sint.auto_eoi = hv_recommend_using_aeoi();
hv_set_register(HV_MSR_SINT0 + VMBUS_MESSAGE_SINT,
shared_sint.as_uint64);
diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h
index 8cc7b0e316d7..3e715aa114da 100644
--- a/include/asm-generic/mshyperv.h
+++ b/include/asm-generic/mshyperv.h
@@ -82,6 +82,19 @@ extern u64 hv_do_fast_hypercall8(u16 control, u64 input8);
bool hv_isolation_type_snp(void);
bool hv_isolation_type_tdx(void);
+/*
+ * On architectures where Hyper-V doesn't support AEOI (e.g., ARM64),
+ * it doesn't provide a recommendation flag and AEOI must be disabled.
+ */
+static inline bool hv_recommend_using_aeoi(void)
+{
+#ifdef HV_DEPRECATING_AEOI_RECOMMENDED
+ return !(ms_hyperv.hints & HV_DEPRECATING_AEOI_RECOMMENDED);
+#else
+ return false;
+#endif
+}
+
/* Helper functions that provide a consistent pattern for checking Hyper-V hypercall status. */
static inline int hv_result(u64 status)
{
--
2.25.1
next prev parent reply other threads:[~2023-09-29 18:02 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-29 18:01 [PATCH v4 00/15] Introduce /dev/mshv drivers Nuno Das Neves
2023-09-29 18:01 ` [PATCH v4 01/15] hyperv-tlfs: Change shared HV_REGISTER_* defines to HV_MSR_* Nuno Das Neves
2023-09-29 18:01 ` [PATCH v4 02/15] mshyperv: Introduce hv_get_hypervisor_version function Nuno Das Neves
2023-09-29 18:01 ` [PATCH v4 03/15] mshyperv: Introduce numa_node_to_proximity_domain_info Nuno Das Neves
2023-09-29 18:01 ` Nuno Das Neves [this message]
2023-09-29 18:01 ` [PATCH v4 05/15] hyperv: Move hv_connection_id to hyperv-tlfs Nuno Das Neves
2023-09-29 18:01 ` [PATCH v4 06/15] hyperv-tlfs: Introduce hv_status_to_string and hv_status_to_errno Nuno Das Neves
2023-09-29 18:01 ` [PATCH v4 07/15] Drivers: hv: Move hv_call_deposit_pages and hv_call_create_vp to common code Nuno Das Neves
2023-10-03 2:51 ` kernel test robot
2023-09-29 18:01 ` [PATCH v4 08/15] Drivers: hv: Introduce per-cpu event ring tail Nuno Das Neves
2023-09-30 11:26 ` kernel test robot
2023-09-29 18:01 ` [PATCH v4 09/15] Drivers: hv: Introduce hv_output_arg_exists in hv_common.c Nuno Das Neves
2023-10-02 19:29 ` Alex Ionescu
2023-10-04 18:27 ` Nuno Das Neves
2023-10-06 18:13 ` Long Li
2023-09-29 18:01 ` [PATCH v4 10/15] x86: hyperv: Add mshv_handler irq handler and setup function Nuno Das Neves
2023-09-29 18:01 ` [PATCH v4 11/15] Drivers: hv: export vmbus_isr, hv_context and hv_post_message Nuno Das Neves
2023-09-29 18:01 ` [PATCH v4 12/15] Documentation: Reserve ioctl number for mshv driver Nuno Das Neves
2023-09-29 18:01 ` [PATCH v4 13/15] uapi: hyperv: Add mshv driver headers defining hypervisor ABIs Nuno Das Neves
2023-09-30 6:09 ` Greg KH
2023-09-30 22:01 ` Wei Liu
2023-10-01 6:19 ` Greg KH
2023-10-03 23:29 ` Wei Liu
2023-10-04 6:11 ` Greg KH
2023-10-04 18:14 ` Wei Liu
2023-10-05 3:59 ` Wei Liu
2023-10-03 23:37 ` Nuno Das Neves
2023-10-04 6:09 ` Greg KH
2023-10-04 17:36 ` Dexuan Cui
2023-10-04 17:50 ` Greg KH
2023-10-04 18:16 ` Nuno Das Neves
2023-10-05 6:26 ` Greg KH
2023-09-30 16:33 ` kernel test robot
2023-10-05 10:27 ` Greg KH
2023-09-29 18:01 ` [PATCH v4 14/15] asm-generic: hyperv: Use new Hyper-V headers conditionally Nuno Das Neves
2023-10-02 19:35 ` Alex Ionescu
2023-10-03 0:41 ` Nuno Das Neves
2023-10-05 19:52 ` Alex Ionescu
2023-10-11 23:32 ` Nuno Das Neves
2023-09-29 18:01 ` [PATCH v4 15/15] Drivers: hv: Add modules to expose /dev/mshv to VMMs running on Hyper-V Nuno Das Neves
2023-09-30 6:02 ` kernel test robot
2023-09-30 6:11 ` Greg KH
2023-09-30 18:11 ` Wei Liu
2023-09-30 18:31 ` Greg KH
2023-09-30 21:13 ` Wei Liu
2023-10-01 6:20 ` Greg KH
2023-10-03 23:35 ` Wei Liu
2023-11-06 4:03 ` kernel test robot
2023-11-06 11:51 ` kernel test robot
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