From: Yi-De Wu <yi-de.wu@mediatek.com>
To: Yingshiuan Pan <yingshiuan.pan@mediatek.com>,
Ze-Yu Wang <ze-yu.wang@mediatek.com>,
Yi-De Wu <yi-de.wu@mediatek.com>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Jonathan Corbet <corbet@lwn.net>,
Catalin Marinas <catalin.marinas@arm.com>,
Wihl Deacon <will@kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
"Masami Hiramatsu" <mhiramat@kernel.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Richard Cochran <richardcochran@gmail.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>
Cc: <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-doc@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-trace-kernel@vger.kernel.org>, <netdev@vger.kernel.org>,
<linux-mediatek@lists.infradead.org>,
David Bradil <dbrazdil@google.com>,
Trilok Soni <quic_tsoni@quicinc.com>,
Jade Shih <jades.shih@mediatek.com>,
Ivan Tseng <ivan.tseng@mediatek.com>,
My Chuang <my.chuang@mediatek.com>,
Shawn Hsiao <shawn.hsiao@mediatek.com>,
PeiLun Suei <peilun.suei@mediatek.com>,
Liju Chen <liju-clr.chen@mediatek.com>,
"Willix Yeh" <chi-shen.yeh@mediatek.com>,
Kevenny Hsieh <kevenny.hsieh@mediatek.com>
Subject: [PATCH v8 12/20] virt: geniezone: Add memory region support
Date: Thu, 28 Dec 2023 18:51:39 +0800 [thread overview]
Message-ID: <20231228105147.13752-13-yi-de.wu@mediatek.com> (raw)
In-Reply-To: <20231228105147.13752-1-yi-de.wu@mediatek.com>
From: "Jerry Wang" <ze-yu.wang@mediatek.com>
Hypervisor might need to know the precise purpose of each memory
region, so that it can provide specific memory protection. We add a new
uapi to pass address and size of a memory region and its purpose.
Signed-off-by: Jerry Wang <ze-yu.wang@mediatek.com>
Signed-off-by: Liju-clr Chen <liju-clr.chen@mediatek.com>
Signed-off-by: Yi-De Wu <yi-de.wu@mediatek.com>
---
arch/arm64/geniezone/gzvm_arch_common.h | 2 ++
arch/arm64/geniezone/vm.c | 10 ++++++++++
drivers/virt/geniezone/gzvm_vm.c | 7 +++++++
include/linux/gzvm_drv.h | 3 +++
4 files changed, 22 insertions(+)
diff --git a/arch/arm64/geniezone/gzvm_arch_common.h b/arch/arm64/geniezone/gzvm_arch_common.h
index 67c7864c3afc..8d1406beeaed 100644
--- a/arch/arm64/geniezone/gzvm_arch_common.h
+++ b/arch/arm64/geniezone/gzvm_arch_common.h
@@ -22,6 +22,7 @@ enum {
GZVM_FUNC_PROBE = 12,
GZVM_FUNC_ENABLE_CAP = 13,
GZVM_FUNC_INFORM_EXIT = 14,
+ GZVM_FUNC_MEMREGION_PURPOSE = 15,
NR_GZVM_FUNC,
};
@@ -44,6 +45,7 @@ enum {
#define MT_HVC_GZVM_PROBE GZVM_HCALL_ID(GZVM_FUNC_PROBE)
#define MT_HVC_GZVM_ENABLE_CAP GZVM_HCALL_ID(GZVM_FUNC_ENABLE_CAP)
#define MT_HVC_GZVM_INFORM_EXIT GZVM_HCALL_ID(GZVM_FUNC_INFORM_EXIT)
+#define MT_HVC_GZVM_MEMREGION_PURPOSE GZVM_HCALL_ID(GZVM_FUNC_MEMREGION_PURPOSE)
#define GIC_V3_NR_LRS 16
diff --git a/arch/arm64/geniezone/vm.c b/arch/arm64/geniezone/vm.c
index 0afdb49b71f5..210f7569d7cc 100644
--- a/arch/arm64/geniezone/vm.c
+++ b/arch/arm64/geniezone/vm.c
@@ -130,6 +130,16 @@ int gzvm_arch_destroy_vm(u16 vm_id)
0, 0, &res);
}
+int gzvm_arch_memregion_purpose(struct gzvm *gzvm,
+ struct gzvm_userspace_memory_region *mem)
+{
+ struct arm_smccc_res res;
+
+ return gzvm_hypcall_wrapper(MT_HVC_GZVM_MEMREGION_PURPOSE, gzvm->vm_id,
+ mem->guest_phys_addr, mem->memory_size,
+ mem->flags, 0, 0, 0, &res);
+}
+
static int gzvm_vm_arch_enable_cap(struct gzvm *gzvm,
struct gzvm_enable_cap *cap,
struct arm_smccc_res *res)
diff --git a/drivers/virt/geniezone/gzvm_vm.c b/drivers/virt/geniezone/gzvm_vm.c
index d67bf647b615..4134605cbf7d 100644
--- a/drivers/virt/geniezone/gzvm_vm.c
+++ b/drivers/virt/geniezone/gzvm_vm.c
@@ -72,6 +72,7 @@ static int
gzvm_vm_ioctl_set_memory_region(struct gzvm *gzvm,
struct gzvm_userspace_memory_region *mem)
{
+ int ret;
struct vm_area_struct *vma;
struct gzvm_memslot *memslot;
unsigned long size;
@@ -96,6 +97,12 @@ gzvm_vm_ioctl_set_memory_region(struct gzvm *gzvm,
memslot->vma = vma;
memslot->flags = mem->flags;
memslot->slot_id = mem->slot;
+
+ ret = gzvm_arch_memregion_purpose(gzvm, mem);
+ if (ret) {
+ pr_err("Failed to config memory region for the specified purpose\n");
+ return -EFAULT;
+ }
return register_memslot_addr_range(gzvm, memslot);
}
diff --git a/include/linux/gzvm_drv.h b/include/linux/gzvm_drv.h
index 406bc9f821b2..d35ca179b688 100644
--- a/include/linux/gzvm_drv.h
+++ b/include/linux/gzvm_drv.h
@@ -152,6 +152,9 @@ void gzvm_drv_irqfd_exit(void);
int gzvm_vm_irqfd_init(struct gzvm *gzvm);
void gzvm_vm_irqfd_release(struct gzvm *gzvm);
+int gzvm_arch_memregion_purpose(struct gzvm *gzvm,
+ struct gzvm_userspace_memory_region *mem);
+
int gzvm_init_ioeventfd(struct gzvm *gzvm);
int gzvm_ioeventfd(struct gzvm *gzvm, struct gzvm_ioeventfd *args);
bool gzvm_ioevent_write(struct gzvm_vcpu *vcpu, __u64 addr, int len,
--
2.18.0
next prev parent reply other threads:[~2023-12-28 10:52 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-28 10:51 [PATCH v8 00/20] GenieZone hypervisor drivers Yi-De Wu
2023-12-28 10:51 ` [PATCH v8 01/20] docs: geniezone: Introduce GenieZone hypervisor Yi-De Wu
2023-12-28 10:51 ` [PATCH v8 02/20] dt-bindings: hypervisor: Add MediaTek " Yi-De Wu
2023-12-28 10:51 ` [PATCH v8 03/20] virt: geniezone: Add GenieZone hypervisor driver Yi-De Wu
2023-12-28 10:51 ` [PATCH v8 04/20] virt: geniezone: Add vm support Yi-De Wu
2023-12-28 10:51 ` [PATCH v8 05/20] virt: geniezone: Add set_user_memory_region for vm Yi-De Wu
2023-12-28 10:51 ` [PATCH v8 06/20] virt: geniezone: Add vm capability check Yi-De Wu
2023-12-28 10:51 ` [PATCH v8 07/20] virt: geniezone: Optimize performance of protected VM memory Yi-De Wu
2023-12-28 10:51 ` [PATCH v8 08/20] virt: geniezone: Add vcpu support Yi-De Wu
2024-01-04 17:52 ` Simon Horman
2023-12-28 10:51 ` [PATCH v8 09/20] virt: geniezone: Add irqchip support for virtual interrupt injection Yi-De Wu
2023-12-28 10:51 ` [PATCH v8 10/20] virt: geniezone: Add irqfd support Yi-De Wu
2023-12-28 10:51 ` [PATCH v8 11/20] virt: geniezone: Add ioeventfd support Yi-De Wu
2023-12-28 10:51 ` Yi-De Wu [this message]
2023-12-28 10:51 ` [PATCH v8 13/20] virt: geniezone: Add dtb config support Yi-De Wu
2023-12-28 10:51 ` [PATCH v8 14/20] virt: geniezone: Add demand paging support Yi-De Wu
2023-12-28 10:51 ` [PATCH v8 15/20] virt: geniezone: Add block-based " Yi-De Wu
2023-12-28 10:51 ` [PATCH v8 16/20] virt: geniezone: Add memory pin/unpin support Yi-De Wu
2023-12-28 10:51 ` [PATCH v8 17/20] virt: geniezone: Add memory relinquish support Yi-De Wu
2023-12-28 10:51 ` [PATCH v8 18/20] virt: geniezone: Provide individual VM memory statistics within debugfs Yi-De Wu
2023-12-28 10:51 ` [PATCH v8 19/20] virt: geniezone: Add tracing support for hyp call and vcpu exit_reason Yi-De Wu
2024-03-28 15:40 ` Steven Rostedt
2023-12-28 10:51 ` [PATCH v8 20/20] virt: geniezone: Enable PTP for synchronizing time between host and guest VMs Yi-De Wu
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