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Sat, 14 Dec 2024 13:46:04 +0000 Received: from CH3PR10MB7329.namprd10.prod.outlook.com ([fe80::f238:6143:104c:da23]) by CH3PR10MB7329.namprd10.prod.outlook.com ([fe80::f238:6143:104c:da23%4]) with mapi id 15.20.8251.015; Sat, 14 Dec 2024 13:46:04 +0000 From: =?utf-8?q?=E2=80=9CWilliam_Roche?= To: david@redhat.com, kvm@vger.kernel.org, qemu-devel@nongnu.org, qemu-arm@nongnu.org Cc: william.roche@oracle.com, peterx@redhat.com, pbonzini@redhat.com, richard.henderson@linaro.org, philmd@linaro.org, peter.maydell@linaro.org, mtosatti@redhat.com, imammedo@redhat.com, eduardo@habkost.net, marcel.apfelbaum@gmail.com, wangyanan55@huawei.com, zhao1.liu@intel.com, joao.m.martins@oracle.com Subject: [PATCH v4 3/7] accel/kvm: Report the loss of a large memory page Date: Sat, 14 Dec 2024 13:45:51 +0000 Message-ID: <20241214134555.440097-4-william.roche@oracle.com> X-Mailer: git-send-email 2.43.5 In-Reply-To: <20241214134555.440097-1-william.roche@oracle.com> References: <20241214134555.440097-1-william.roche@oracle.com> X-ClientProxiedBy: BYAPR03CA0018.namprd03.prod.outlook.com (2603:10b6:a02:a8::31) To CH3PR10MB7329.namprd10.prod.outlook.com (2603:10b6:610:12c::16) Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH3PR10MB7329:EE_|SN4PR10MB5624:EE_ X-MS-Office365-Filtering-Correlation-Id: 86686eb3-118b-4f1c-3b70-08dd1c45a72f X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|1800799024|7416014|376014; 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Include also a similar message to the ARM platform. In the case of a large page impacted, we now report: ...Memory Error at QEMU addr X and GUEST addr Y on lost large page SIZE@ADDR of type... Signed-off-by: William Roche --- accel/kvm/kvm-all.c | 4 ---- target/arm/kvm.c | 13 +++++++++++++ target/i386/kvm/kvm.c | 18 ++++++++++++++---- 3 files changed, 27 insertions(+), 8 deletions(-) diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index 24c0c4ce3f..8a47aa7258 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -1286,10 +1286,6 @@ static void kvm_unpoison_all(void *param) void kvm_hwpoison_page_add(ram_addr_t ram_addr) { HWPoisonPage *page; - size_t page_size = qemu_ram_pagesize_from_addr(ram_addr); - - if (page_size > TARGET_PAGE_SIZE) - ram_addr = QEMU_ALIGN_DOWN(ram_addr, page_size); QLIST_FOREACH(page, &hwpoison_page_list, list) { if (page->ram_addr == ram_addr) { diff --git a/target/arm/kvm.c b/target/arm/kvm.c index 7b6812c0de..db234f79cc 100644 --- a/target/arm/kvm.c +++ b/target/arm/kvm.c @@ -2366,6 +2366,8 @@ void kvm_arch_on_sigbus_vcpu(CPUState *c, int code, void *addr) { ram_addr_t ram_addr; hwaddr paddr; + size_t page_size; + char lp_msg[54]; assert(code == BUS_MCEERR_AR || code == BUS_MCEERR_AO); @@ -2373,6 +2375,14 @@ void kvm_arch_on_sigbus_vcpu(CPUState *c, int code, void *addr) ram_addr = qemu_ram_addr_from_host(addr); if (ram_addr != RAM_ADDR_INVALID && kvm_physical_memory_addr_from_host(c->kvm_state, addr, &paddr)) { + page_size = qemu_ram_pagesize_from_addr(ram_addr); + if (page_size > TARGET_PAGE_SIZE) { + ram_addr = ROUND_DOWN(ram_addr, page_size); + snprintf(lp_msg, sizeof(lp_msg), " on lost large page " + RAM_ADDR_FMT "@" RAM_ADDR_FMT "", page_size, ram_addr); + } else { + lp_msg[0] = '\0'; + } kvm_hwpoison_page_add(ram_addr); /* * If this is a BUS_MCEERR_AR, we know we have been called @@ -2389,6 +2399,9 @@ void kvm_arch_on_sigbus_vcpu(CPUState *c, int code, void *addr) kvm_cpu_synchronize_state(c); if (!acpi_ghes_record_errors(ACPI_HEST_SRC_ID_SEA, paddr)) { kvm_inject_arm_sea(c); + error_report("Guest Memory Error at QEMU addr %p and " + "GUEST addr 0x%" HWADDR_PRIx "%s of type %s injected", + addr, paddr, lp_msg, "BUS_MCEERR_AR"); } else { error_report("failed to record the error"); abort(); diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index 8e17942c3b..336646ed61 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -741,6 +741,8 @@ void kvm_arch_on_sigbus_vcpu(CPUState *c, int code, void *addr) CPUX86State *env = &cpu->env; ram_addr_t ram_addr; hwaddr paddr; + size_t page_size; + char lp_msg[54]; /* If we get an action required MCE, it has been injected by KVM * while the VM was running. An action optional MCE instead should @@ -753,6 +755,14 @@ void kvm_arch_on_sigbus_vcpu(CPUState *c, int code, void *addr) ram_addr = qemu_ram_addr_from_host(addr); if (ram_addr != RAM_ADDR_INVALID && kvm_physical_memory_addr_from_host(c->kvm_state, addr, &paddr)) { + page_size = qemu_ram_pagesize_from_addr(ram_addr); + if (page_size > TARGET_PAGE_SIZE) { + ram_addr = ROUND_DOWN(ram_addr, page_size); + snprintf(lp_msg, sizeof(lp_msg), " on lost large page " + RAM_ADDR_FMT "@" RAM_ADDR_FMT "", page_size, ram_addr); + } else { + lp_msg[0] = '\0'; + } kvm_hwpoison_page_add(ram_addr); kvm_mce_inject(cpu, paddr, code); @@ -763,12 +773,12 @@ void kvm_arch_on_sigbus_vcpu(CPUState *c, int code, void *addr) */ if (code == BUS_MCEERR_AR) { error_report("Guest MCE Memory Error at QEMU addr %p and " - "GUEST addr 0x%" HWADDR_PRIx " of type %s injected", - addr, paddr, "BUS_MCEERR_AR"); + "GUEST addr 0x%" HWADDR_PRIx "%s of type %s injected", + addr, paddr, lp_msg, "BUS_MCEERR_AR"); } else { warn_report("Guest MCE Memory Error at QEMU addr %p and " - "GUEST addr 0x%" HWADDR_PRIx " of type %s injected", - addr, paddr, "BUS_MCEERR_AO"); + "GUEST addr 0x%" HWADDR_PRIx "%s of type %s injected", + addr, paddr, lp_msg, "BUS_MCEERR_AO"); } return;