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 14/15] asm-generic: hyperv: Use new Hyper-V headers conditionally.
Date: Fri, 29 Sep 2023 11:01:40 -0700 [thread overview]
Message-ID: <1696010501-24584-15-git-send-email-nunodasneves@linux.microsoft.com> (raw)
In-Reply-To: <1696010501-24584-1-git-send-email-nunodasneves@linux.microsoft.com>
Add asm-generic/hyperv-defs.h. It includes hyperv-tlfs.h or hvhdk.h
depending on compile-time constant HV_HYPERV_DEFS which will be defined in
the mshv driver.
This is needed to keep unstable Hyper-V interfaces independent of
hyperv-tlfs.h. This ensures hvhdk.h replaces hyperv-tlfs.h in the mshv
driver, even via indirect includes.
Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com>
Acked-by: Wei Liu <wei.liu@kernel.org>
---
arch/arm64/include/asm/mshyperv.h | 2 +-
arch/x86/include/asm/mshyperv.h | 3 +--
drivers/hv/hyperv_vmbus.h | 1 -
include/asm-generic/hyperv-defs.h | 26 ++++++++++++++++++++++++++
include/asm-generic/mshyperv.h | 2 +-
include/linux/hyperv.h | 2 +-
6 files changed, 30 insertions(+), 6 deletions(-)
create mode 100644 include/asm-generic/hyperv-defs.h
diff --git a/arch/arm64/include/asm/mshyperv.h b/arch/arm64/include/asm/mshyperv.h
index 20070a847304..8ec14caf3d4f 100644
--- a/arch/arm64/include/asm/mshyperv.h
+++ b/arch/arm64/include/asm/mshyperv.h
@@ -20,7 +20,7 @@
#include <linux/types.h>
#include <linux/arm-smccc.h>
-#include <asm/hyperv-tlfs.h>
+#include <asm-generic/hyperv-defs.h>
/*
* Declare calls to get and set Hyper-V VP register values on ARM64, which
diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h
index e3768d787065..bb1b97106cd3 100644
--- a/arch/x86/include/asm/mshyperv.h
+++ b/arch/x86/include/asm/mshyperv.h
@@ -6,10 +6,9 @@
#include <linux/nmi.h>
#include <linux/msi.h>
#include <linux/io.h>
-#include <asm/hyperv-tlfs.h>
#include <asm/nospec-branch.h>
#include <asm/paravirt.h>
-#include <asm/mshyperv.h>
+#include <asm-generic/hyperv-defs.h>
/*
* Hyper-V always provides a single IO-APIC at this MMIO address.
diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h
index 09792eb4ffed..0e4bc18a13fa 100644
--- a/drivers/hv/hyperv_vmbus.h
+++ b/drivers/hv/hyperv_vmbus.h
@@ -15,7 +15,6 @@
#include <linux/list.h>
#include <linux/bitops.h>
#include <asm/sync_bitops.h>
-#include <asm/hyperv-tlfs.h>
#include <linux/atomic.h>
#include <linux/hyperv.h>
#include <linux/interrupt.h>
diff --git a/include/asm-generic/hyperv-defs.h b/include/asm-generic/hyperv-defs.h
new file mode 100644
index 000000000000..ac6fcba35c8c
--- /dev/null
+++ b/include/asm-generic/hyperv-defs.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_GENERIC_HYPERV_DEFS_H
+#define _ASM_GENERIC_HYPERV_DEFS_H
+
+/*
+ * There are cases where Microsoft Hypervisor ABIs are needed which may not be
+ * stable or present in the Hyper-V TLFS document. E.g. the mshv_root driver.
+ *
+ * As these interfaces are unstable and may differ from hyperv-tlfs.h, they
+ * must be kept separate and independent.
+ *
+ * However, code from files that depend on hyperv-tlfs.h (such as mshyperv.h)
+ * is still needed, so work around the issue by conditionally including the
+ * correct definitions.
+ *
+ * Note: Since they are independent of each other, there are many definitions
+ * duplicated in both hyperv-tlfs.h and uapi/hyperv/hv*.h files.
+ */
+#ifdef HV_HYPERV_DEFS
+#include <uapi/hyperv/hvhdk.h>
+#else
+#include <asm/hyperv-tlfs.h>
+#endif
+
+#endif /* _ASM_GENERIC_HYPERV_DEFS_H */
+
diff --git a/include/asm-generic/mshyperv.h b/include/asm-generic/mshyperv.h
index d832852d0ee7..6bef0d59d1b7 100644
--- a/include/asm-generic/mshyperv.h
+++ b/include/asm-generic/mshyperv.h
@@ -25,7 +25,7 @@
#include <linux/cpumask.h>
#include <linux/nmi.h>
#include <asm/ptrace.h>
-#include <asm/hyperv-tlfs.h>
+#include <asm-generic/hyperv-defs.h>
#define VTPM_BASE_ADDRESS 0xfed40000
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index 4d5a5e39d76c..722a8cf23d87 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -24,7 +24,7 @@
#include <linux/mod_devicetable.h>
#include <linux/interrupt.h>
#include <linux/reciprocal_div.h>
-#include <asm/hyperv-tlfs.h>
+#include <asm-generic/hyperv-defs.h>
#define MAX_PAGE_BUFFER_COUNT 32
#define MAX_MULTIPAGE_BUFFER_COUNT 32 /* 128K */
--
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 ` [PATCH v4 04/15] asm-generic/mshyperv: Introduce hv_recommend_using_aeoi() Nuno Das Neves
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 ` Nuno Das Neves [this message]
2023-10-02 19:35 ` [PATCH v4 14/15] asm-generic: hyperv: Use new Hyper-V headers conditionally 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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1696010501-24584-15-git-send-email-nunodasneves@linux.microsoft.com \
--to=nunodasneves@linux.microsoft.com \
--cc=Tianyu.Lan@microsoft.com \
--cc=apais@linux.microsoft.com \
--cc=bp@alien8.de \
--cc=catalin.marinas@arm.com \
--cc=dave.hansen@linux.intel.com \
--cc=decui@microsoft.com \
--cc=gregkh@linuxfoundation.org \
--cc=haiyangz@microsoft.com \
--cc=hpa@zytor.com \
--cc=jinankjain@linux.microsoft.com \
--cc=kys@microsoft.com \
--cc=linux-arch@vger.kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-hyperv@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mikelley@microsoft.com \
--cc=mingo@redhat.com \
--cc=mukeshrathor@microsoft.com \
--cc=patches@lists.linux.dev \
--cc=ssengar@linux.microsoft.com \
--cc=stanislav.kinsburskiy@gmail.com \
--cc=tglx@linutronix.de \
--cc=vkuznets@redhat.com \
--cc=wei.liu@kernel.org \
--cc=will@kernel.org \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).