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Thu, 16 Nov 2023 23:29:10 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Thu, 16 Nov 2023 23:29:10 +0800 From: Yi-De Wu To: Yingshiuan Pan , Ze-Yu Wang , Yi-De Wu , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jonathan Corbet , Catalin Marinas , Will Deacon , Matthias Brugger , AngeloGioacchino Del Regno CC: Arnd Bergmann , , , , , , David Bradil , Trilok Soni , Jade Shih , Ivan Tseng , "My Chuang" , Shawn Hsiao , PeiLun Suei , Liju Chen , Willix Yeh , "Kevenny Hsieh" Subject: [PATCH v7 11/16] virt: geniezone: Add memory region support Date: Thu, 16 Nov 2023 23:27:51 +0800 Message-ID: <20231116152756.4250-12-yi-de.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20231116152756.4250-1-yi-de.wu@mediatek.com> References: <20231116152756.4250-1-yi-de.wu@mediatek.com> MIME-Version: 1.0 X-TM-AS-Product-Ver: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-AS-Result: No-10--3.824400-8.000000 X-TMASE-MatchedRID: Bo0EIJTmAYww2a0RxGqSGyVypP66BP0QNNuh+5zmS68Cgjr7b0ytGZas fA8Y/RCF8B1Eq8wDKAEQzM3Grt8RghUBkTmMruyZhK8o4aoss8pKPIx+MJF9o99RlPzeVuQQpc2 xgJAY6Lr/EdEp4HtkngHGJy9aPQkxszLAY5oHhBDd+fuf9kcapoLFgHaE9Li9myiLZetSf8mfop 0ytGwvXiq2rl3dzGQ1GpeevGsoI5efx/ODfmS8hVLonbRaJSAlMhPiGv+ySqfnmuHU3Hy4zh7iV 7sgEQB3EWg0sN9tvXVSxvQ22XogcxJ8hrkbE7cvfrXvGsMeiaAXRoPmWO3jekxwdkPqCq7vDEyN +J8hd+jCS9WgDXVPCn7cGd19dSFd X-TM-AS-User-Approved-Sender: No X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--3.824400-8.000000 X-TMASE-Version: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-SNTS-SMTP: B3251935487F59CBB09556424F32FC0E4F8475F2BE1B9D7D9557CD9BFD050F7F2000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231116_072952_562417_D15DF2CA X-CRM114-Status: GOOD ( 14.94 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org From: "Jerry Wang" 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 Signed-off-by: Liju-clr Chen Signed-off-by: Yi-De Wu --- 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 0131dd04dd93..6c4179568a1b 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 b628aa506c2f..cab6468948e3 100644 --- a/arch/arm64/geniezone/vm.c +++ b/arch/arm64/geniezone/vm.c @@ -123,6 +123,16 @@ 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,