linux-kernel - [PATCH v2 1/3] PCI: hv: Move hypercall related definitions into tlfs header

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Date:   Mon,  3 Feb 2020 13:03:11 +0800
From:   Boqun Feng <boqun.feng@...il.com>
To:     linux-pci@...r.kernel.org, linux-hyperv@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc:     Michael Kelley <mikelley@...rosoft.com>,
        "K. Y. Srinivasan" <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        Sasha Levin <sashal@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Andrew Murray <andrew.murray@....com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Boqun Feng <boqun.feng@...il.com>
Subject: [PATCH v2 1/3] PCI: hv: Move hypercall related definitions into tlfs header

Currently HVCALL_RETARGET_INTERRUPT and HV_PARTITION_ID_SELF are defined
in pci-hyperv.c. However, similar to other hypercall related definitions
, it makes more sense to put them in the tlfs header file.

Besides, these definitions are arch-dependent, so for the support of
virtual PCI on non-x86 archs in the future, move them into arch-specific
tlfs header file.

Signed-off-by: Boqun Feng (Microsoft) <boqun.feng@...il.com>
---
 arch/x86/include/asm/hyperv-tlfs.h  | 3 +++
 drivers/pci/controller/pci-hyperv.c | 6 ------
 2 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h
index 5f10f7f2098d..739bd89226a5 100644
--- a/arch/x86/include/asm/hyperv-tlfs.h
+++ b/arch/x86/include/asm/hyperv-tlfs.h
@@ -376,6 +376,7 @@ struct hv_tsc_emulation_status {
 #define HVCALL_SEND_IPI_EX			0x0015
 #define HVCALL_POST_MESSAGE			0x005c
 #define HVCALL_SIGNAL_EVENT			0x005d
+#define HVCALL_RETARGET_INTERRUPT		0x007e
 #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_SPACE 0x00af
 #define HVCALL_FLUSH_GUEST_PHYSICAL_ADDRESS_LIST 0x00b0
 
@@ -405,6 +406,8 @@ enum HV_GENERIC_SET_FORMAT {
 	HV_GENERIC_SET_ALL,
 };
 
+#define HV_PARTITION_ID_SELF                    ((u64)-1)
+
 #define HV_HYPERCALL_RESULT_MASK	GENMASK_ULL(15, 0)
 #define HV_HYPERCALL_FAST_BIT		BIT(16)
 #define HV_HYPERCALL_VARHEAD_OFFSET	17
diff --git a/drivers/pci/controller/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c
index 9977abff92fc..aacfcc90d929 100644
--- a/drivers/pci/controller/pci-hyperv.c
+++ b/drivers/pci/controller/pci-hyperv.c
@@ -406,12 +406,6 @@ struct pci_eject_response {
 
 static int pci_ring_size = (4 * PAGE_SIZE);
 
-/*
- * Definitions or interrupt steering hypercall.
- */
-#define HV_PARTITION_ID_SELF		((u64)-1)
-#define HVCALL_RETARGET_INTERRUPT	0x7e
-
 struct hv_interrupt_entry {
 	u32	source;			/* 1 for MSI(-X) */
 	u32	reserved1;
-- 
2.24.1