All of lore.kernel.org
 help / color / mirror / Atom feed
From: Rajnesh Kanwal <rkanwal@rivosinc.com>
To: apatel@ventanamicro.com, atishp@rivosinc.com, kvm@vger.kernel.org
Cc: Rajnesh Kanwal <rkanwal@rivosinc.com>
Subject: [PATCH kvmtool 1/1] riscv: pci: Add --force-pci option for riscv VMs.
Date: Wed, 18 Jan 2023 17:20:07 +0000	[thread overview]
Message-ID: <20230118172007.408667-1-rkanwal@rivosinc.com> (raw)

Adding force-pci option to allow forcing virtio
devices to use pci as the default transport.

Signed-off-by: Rajnesh Kanwal <rkanwal@rivosinc.com>
---
 riscv/include/kvm/kvm-arch.h        | 6 ++++--
 riscv/include/kvm/kvm-config-arch.h | 7 ++++++-
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/riscv/include/kvm/kvm-arch.h b/riscv/include/kvm/kvm-arch.h
index 1e130f5..2cf41c5 100644
--- a/riscv/include/kvm/kvm-arch.h
+++ b/riscv/include/kvm/kvm-arch.h
@@ -46,8 +46,10 @@
 
 #define KVM_VM_TYPE		0
 
-#define VIRTIO_DEFAULT_TRANS(kvm) \
-	((kvm)->cfg.virtio_legacy ? VIRTIO_MMIO_LEGACY : VIRTIO_MMIO)
+#define VIRTIO_DEFAULT_TRANS(kvm)					\
+	((kvm)->cfg.arch.virtio_trans_pci ?				\
+	 ((kvm)->cfg.virtio_legacy ? VIRTIO_PCI_LEGACY : VIRTIO_PCI) :	\
+	 ((kvm)->cfg.virtio_legacy ? VIRTIO_MMIO_LEGACY : VIRTIO_MMIO))
 
 #define VIRTIO_RING_ENDIAN	VIRTIO_ENDIAN_LE
 
diff --git a/riscv/include/kvm/kvm-config-arch.h b/riscv/include/kvm/kvm-config-arch.h
index 188125c..901a5e0 100644
--- a/riscv/include/kvm/kvm-config-arch.h
+++ b/riscv/include/kvm/kvm-config-arch.h
@@ -6,6 +6,7 @@
 struct kvm_config_arch {
 	const char	*dump_dtb_filename;
 	bool		ext_disabled[KVM_RISCV_ISA_EXT_MAX];
+	bool		virtio_trans_pci;
 };
 
 #define OPT_ARCH_RUN(pfx, cfg)						\
@@ -26,6 +27,10 @@ struct kvm_config_arch {
 		    "Disable Zicbom Extension"),			\
 	OPT_BOOLEAN('\0', "disable-zihintpause",			\
 		    &(cfg)->ext_disabled[KVM_RISCV_ISA_EXT_ZIHINTPAUSE],\
-		    "Disable Zihintpause Extension"),
+		    "Disable Zihintpause Extension"),			\
+	OPT_BOOLEAN('\0', "force-pci",					\
+			&(cfg)->virtio_trans_pci,			\
+		    "Force virtio devices to use PCI as their "		\
+		    "default transport"),
 
 #endif /* KVM__KVM_CONFIG_ARCH_H */
-- 
2.25.1


             reply	other threads:[~2023-01-18 17:20 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-18 17:20 Rajnesh Kanwal [this message]
2023-01-19 13:39 ` [PATCH kvmtool 1/1] riscv: pci: Add --force-pci option for riscv VMs Alexandru Elisei
2023-01-19 14:24   ` Andre Przywara
2023-01-19 18:16   ` Will Deacon
2023-01-21 12:18     ` Marc Zyngier
2023-01-21 15:41       ` Alexandru Elisei

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=20230118172007.408667-1-rkanwal@rivosinc.com \
    --to=rkanwal@rivosinc.com \
    --cc=apatel@ventanamicro.com \
    --cc=atishp@rivosinc.com \
    --cc=kvm@vger.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.