{"id":646,"date":"2024-07-10T11:26:28","date_gmt":"2024-07-10T03:26:28","guid":{"rendered":"http:\/\/www.o6s.net\/?p=646"},"modified":"2024-07-10T11:26:28","modified_gmt":"2024-07-10T03:26:28","slug":"openeuler-aarch64%e6%9e%b6%e6%9e%84vcpu%e7%83%ad%e6%8f%92%e6%8b%94%e6%8a%80%e6%9c%af%e5%86%85%e5%b9%95","status":"publish","type":"post","link":"https:\/\/www.o6s.net\/index.php\/2024\/07\/10\/openeuler-aarch64%e6%9e%b6%e6%9e%84vcpu%e7%83%ad%e6%8f%92%e6%8b%94%e6%8a%80%e6%9c%af%e5%86%85%e5%b9%95\/","title":{"rendered":"openEuler AArch64\u67b6\u6784vCPU\u70ed\u63d2\u62d4\u6280\u672f\u5185\u5e55"},"content":{"rendered":"
\n
openEuler<\/span>2024-06-27<\/span>openEuler<\/span><\/div>\n<\/div>\n
\n
\n

openEuler \u793e\u533a\u5f15\u9886\u6280\u672f\u6d6a\u6f6e\uff0c\u65e9\u5728openEuler 20.09 \u521b\u65b0\u7248\u672c\u5c31\u7387\u5148\u4f7f\u80fd\u5e76\u5bf9\u5916\u5f00\u653e\u4e86 AArch64 \u67b6\u6784 vCPU \u70ed\u63d2\u7279\u6027\u3002\u65f6\u9694\u56db\u5e74\uff0copenEuler 24.03 LTS \u7248\u672c\u8865\u5145\u4e86 vCPU \u70ed\u62d4\u80fd\u529b\uff0cvCPU \u70ed\u63d2\u62d4\u7279\u6027\u5f97\u5230\u6b63\u5f0f\u5b8c\u6574\u7684\u652f\u6301\uff0c\u5176\u66f4\u597d\u5730\u6ee1\u8db3\u5f00\u53d1\u8005\u5bf9 vCPU \u8d44\u6e90\u7684\u5f39\u6027\u4f38\u7f29\u9700\u6c42\uff0c\u8fdb\u4e00\u6b65\u5ef6\u4f38\u4e86\u8be5\u7279\u6027\u7684\u4f7f\u7528\u573a\u666f\u53ca\u4ef7\u503c\u3002\u672c\u6587\u5c06\u5e26\u5404\u4f4d\u8bfb\u8005\u66f4\u6df1\u5165\u4e86\u89e3 vCPU \u70ed\u63d2\u62d4\u6280\u672f\u7684\u4ef7\u503c\u3001AArch64 \u67b6\u6784\u4e0b vCPU \u70ed\u63d2\u62d4\u7279\u6027\u6f14\u8fdb\u5386\u53f2\u53ca\u57fa\u672c\u5b9e\u73b0\u539f\u7406\u3002<\/p>\n

\u7279\u6027\u4ef7\u503c<\/h2>\n

vCPU \u70ed\u63d2\u62d4\u6280\u672f\u53ef\u4ee5\u5728\u865a\u62df\u673a\u8fd0\u884c\u72b6\u6001\u4e0b\u589e\u52a0\u6216\u51cf\u5c11 vCPU \u6570\u91cf\uff0c\u5b9e\u73b0\u4e0d\u4e2d\u65ad\u4e1a\u52a1\u6761\u4ef6\u4e0b\u52a8\u6001\u8c03\u6574vCPU \u8d44\u6e90\u3002<\/p>\n

\u8d44\u6e90\u5f39\u6027\u662f\u4e91\u8ba1\u7b97\u7684\u6838\u5fc3\u4f18\u52bf\u4e4b\u4e00\uff0c\u800c vCPU \u70ed\u63d2\u62d4\u662f\u5b9e\u73b0 CPU \u7b97\u529b\u5f39\u6027\u7684\u5173\u952e\u6280\u672f\u4e4b\u4e00\u3002\u5176\u4ef7\u503c\u4e0d\u9650\u4e8e\uff1a 1\uff09\u52a0\u5feb\u865a\u62df\u673a\u542f\u52a8\u901f\u5ea6\u3002\u7279\u522b\u5bf9\u4e8e\u8f7b\u91cf\u5316\u573a\u666f\u6536\u76ca\u8f83\u5927\u3002\u6bd4\u5982 Kata \u5b89\u5168\u5bb9\u5668\u521d\u59cb\u53ea\u914d\u7f6e 1\u4e2a vCPU\uff0c\u7b49\u542f\u52a8\u5b8c\u6210\u540e\u70ed\u63d2\u66f4\u591a vCPU\u3002 2\uff09\u6309\u9700\u4f7f\u7528\u8d44\u6e90\uff0c\u4ece\u800c\u4f18\u5316\u4e1a\u52a1\u6210\u672c\u3002\u5f00\u53d1\u8005\u6839\u636e\u4e1a\u52a1\u8d1f\u8f7d\u9700\u6c42\uff0c\u5728\u7ebf\u8c03\u6574\u865a\u62df\u673a vCPU \u6570\u91cf\u3002\u8d1f\u8f7d\u5927\u65f6\u589e\u52a0\u8d44\u6e90\uff0c\u8d1f\u8f7d\u5c0f\u65f6\u51cf\u5c11\u8d44\u6e90\u3002<\/p>\n

\u6765\u81eaAArch64\u67b6\u6784\u7684\u6311\u6218<\/h2>\n

\u5728 AArch64 \u67b6\u6784\u4e0b\uff0c\u652f\u6301 vCPU \u70ed\u63d2\u62d4\u9762\u4e34\u6765\u81ea\u67b6\u6784\u89c4\u8303\u3001Guest \u5185\u6838\u3001KVM \u5404\u65b9\u9762\u7684\u6311\u6218\u3002<\/p>\n

AArch64 \u4f53\u7cfb\u7ed3\u6784\u7f3a\u4e4f\u5bf9\u7269\u7406 CPU \u70ed\u63d2\u62d4\u7684\u8bbe\u8ba1\uff0c\u4f7f\u5f97\u865a\u62df\u5316\u573a\u666f CPU \u70ed\u63d2\u62d4\u7684\u8bbe\u8ba1\u7f3a\u4e4f\u73b0\u5b9e\u7269\u7406\u4e16\u754c\u7684\u4f9d\u636e\u3002\u7279\u522b\u662f\u4e2d\u65ad\u63a7\u5236\u5668 GIC\uff0c\u5176\u9ed8\u8ba4\u6240\u6709 CPU \u5728\u542f\u52a8\u65f6\u90fd\u5df2\u5b58\u5728\uff0c\u4e0d\u80fd\u5728\u7cfb\u7edf\u542f\u52a8\u540e\u8fdb\u884c\u8c03\u6574\u3002<\/p>\n

\u7531\u4e8e\u7269\u7406\u7cfb\u7edf\u4e0d\u652f\u6301 CPU \u70ed\u63d2\u62d4\uff0cARM Linux \u5185\u6838\u4e5f\u4e00\u76f4\u7f3a\u4e4f\u5bf9\u8be5\u80fd\u529b\u7684\u652f\u6301\u3002\u5982\u679c\u8981\u5728\u865a\u62df\u5316\u573a\u666f\u5b9e\u73b0\u8be5\u7279\u6027\uff0c\u5fc5\u987b\u5148\u5b8c\u5584 Linux \u5185\u6838\uff0c\u4f7f\u5f97\u5f53\u5176\u4f5c\u4e3a Guest \u5185\u6838\u65f6\u80fd\u6b63\u5e38\u652f\u6301\u8be5\u7279\u6027\u3002<\/p>\n

\u53e6\u5916\u8fd8\u9762\u4e34\u7740\u6765\u81ea KVM \u7684\u6311\u6218\u3002KVM \u4e0d\u652f\u6301\u52a8\u6001\u8c03\u6574 vCPU \u5bf9\u8c61\u6570\u91cf\uff0c\u5373\u5f53\u865a\u62df\u673a\u5f00\u59cb\u8fd0\u884c\u540e\uff0cKVM \u5c06\u62d2\u7edd\u64cd\u4f5c\u76ee\u6807\u865a\u62df\u673a\u589e\u52a0\u6216\u51cf\u5c11 vCPU\u3002<\/p>\n

\u7279\u6027\u6f14\u8fdb<\/h2>\n

\u9762\u5bf9\u4ee5\u4e0a\u6311\u6218\uff0c\u865a\u62df\u5316\u573a\u666f\u4e0b CPU \u70ed\u63d2\u62d4\u7279\u6027\u7684\u8fdb\u5ea6\u8f83\u7f13\u6162\u3002\u6700\u65e9\u7684\u5b9e\u73b0\u6765\u81ea\u534e\u4e3a\uff0c\u4e8e 2019 \u5e74\u548c 2020 \u5e74\u5206\u522b\u5411\u4e3b\u7ebf\u793e\u533a\u63d0\u4ea4\u4e86 Guest \u5185\u6838\u4fa7\u8865\u4e01[1]\u53ca QEMU \u4fa7\u8865\u4e01[2]\uff0c\u70ed\u63d2\u62d4\u534f\u8bae\u4e0a\u53c2\u8003\u4e86 x86 \u67b6\u6784\u3002\u4f46\u793e\u533a\u8ba8\u8bba\u8ba4\u4e3a AArch64 \u67b6\u6784\u6682\u65f6\u7f3a\u4e4f CPU \u70ed\u63d2\u62d4\u76f8\u5173\u89c4\u8303\uff0c\u76f8\u5173\u8865\u4e01\u4e0d\u80fd\u5148\u4e8e\u89c4\u8303\u5408\u5165\u4e3b\u7ebf\u3002<\/p>\n

\u6b64\u540e\u534e\u4e3a\u548c ARM \u516c\u53f8\u6df1\u5165\u5408\u4f5c\uff0c\u7ecf\u8fc7\u957f\u671f\u7684\u52aa\u529b\uff0c\u57fa\u672c\u89e3\u51b3\u4e86\u4e0d\u9650\u4e8e\u4ee5\u4e0a\u6240\u8ff0\u7684\u6311\u6218\u30022022 \u5e74\uff0cACPI 6.5 \u89c4\u8303\u53d1\u5e03\uff0c\u9488\u5bf9 AArch64 \u7279\u6b8a\u7684\u67b6\u6784\u9650\u5236\uff0c\u5728 MADT GICC \u63cf\u8ff0\u4e2d\u52a0\u5165\u4e86 ONLINE-CAPABLE \u5c5e\u6027[3]\uff0c\u7528\u4e8e\u652f\u6301\u865a\u62df\u5316\u573a\u666f\u4e0b CPU \u70ed\u63d2\u62d4\u3002\u57fa\u4e8e\u8be5\u6700\u65b0\u89c4\u8303\uff0cARM \u516c\u53f8\u5f00\u53d1\u4e86 Guest \u5185\u6838\u4fa7\u8865\u4e01[4]\uff0c\u534e\u4e3a\u5f00\u53d1\u4e86 QEMU \u4fa7\u8865\u4e01[5]\u3002\u76f8\u5173\u8865\u4e01\u6b63\u5728\u7a33\u6b65\u63a8\u8fdb\uff0c\u5373\u5c06\u5408\u5165\u4e3b\u7ebf\u793e\u533a\u3002<\/p>\n

openEuler \u793e\u533a\u5b8c\u5584\u5e76\u52a0\u56fa\u4e86\u4ee5\u4e0a\u8865\u4e01\uff0c\u5728 openEuler 24.03 LTS \u7248\u672c\u4e2d\u63d0\u4f9b\u4e86\u5bf9\u8be5\u7279\u6027\u7684\u7a33\u5b9a\u652f\u6301\u3002<\/p>\n

\u57fa\u672c\u5b9e\u73b0\u539f\u7406<\/h2>\n

**\u521d\u59cb\u5316\u6d41\u7a0b\uff1a**\u4e3a\u4e86\u5e94\u5bf9\u6765\u81ea\u4f53\u7cfb\u7ed3\u6784\u548c KVM \u67b6\u6784\u7684\u7ea6\u675f\uff0cQEMU \u5728\u521b\u5efa\u5177\u6709\u70ed\u63d2\u80fd\u529b\u7684\u865a\u62df\u673a\u65f6\uff0c\u5fc5\u987b\u4e3a\u6240\u6709 vCPU \u8c03\u7528 KVM_CREATE_VCPU IOCTL \u521b\u5efa KVM vCPU \u5bf9\u8c61\uff0c\u5e76\u4e3a\u6240\u6709 vCPU \u63d0\u524d\u521b\u5efa\u597d GIC irqs\u3001GICR \u548c GICC \u7b49\u865a\u62df\u8d44\u6e90\u3002\u4f46\u521d\u59cb\u5316\u65f6\u53ea\u9700\u521b\u5efa\u5b9e\u9645\u9700\u8981\u7684 vCPU \u7ebf\u7a0b\uff0c\u5bf9\u4e8e\u8fd8\u672a\u70ed\u63d2\u7684 vCPU\uff0c\u5176 vCPU \u7ebf\u7a0b\u53ef\u4ee5\u5ef6\u8fdf\u5230\u70ed\u63d2\u65f6\u518d\u521b\u5efa\u3002<\/p>\n

\u6b64\u5916\u8fd8\u6d89\u53ca\u5230\u4e24\u4e2a\u5173\u952e\u7684\u865a\u62df\u8bbe\u5907\u3002CPU Control Device \u8d1f\u8d23\u7ba1\u7406\u6574\u4e2avCPU\u70ed\u63d2\u62d4\u7684\u72b6\u6001\uff0cGED Device \u8d1f\u8d23\u5411 Guest \u53d1\u9001\u70ed\u63d2\u62d4\u901a\u77e5\u3002Guest \u5185\u6838\u901a\u8fc7\u865a\u62df ACPI \u8868\u548c CPU Control Device \u53caGED \u8bbe\u5907\u4ea4\u4e92\u3002\u76f8\u5173\u7684 ACPI \u65b9\u6cd5\u5305\u62ec_EVT\u3001_STA\u3001_MAT \u7b49\u3002<\/p>\n

\"image2\"\u00a0\u3001\u00a0\u56fe1<\/strong>\u00a0vCPU \u70ed\u63d2\u6d41\u7a0b<\/p>\n

** \u70ed\u63d2\u6d41\u7a0b\uff1a **\u5f00\u53d1\u8005\u901a\u8fc7 device_add QMP \u547d\u4ee4\u5411 QEMU \u53d1\u51fa vCPU \u70ed\u63d2\u8bf7\u6c42\u3002QEMU \u89e3\u6790\u547d\u4ee4\uff0c\u521b\u5efa vCPU \u7ebf\u7a0b\u4f7f\u4e4b\u4e0e\u521d\u59cb\u5316\u65f6\u63d0\u524d\u521b\u5efa\u7684 KVM vCPU \u5bf9\u8c61\u76f8\u5173\u8054\uff0c\u7136\u540e\u8c03\u7528 KVM \u521d\u59cb\u5316vCPU \u72b6\u6001\u5e76\u8fd0\u884c\u3002\u968f\u540e\uff0cQEMU \u4f9d\u7167 ACPI \u89c4\u8303\uff0c\u4fee\u6539\u5f53\u524d\u70ed\u63d2 vCPU \u7684 _STA \u72b6\u6001\u4e3a PRESENT \u4e14 ENABLE \uff0c\u64cd\u4f5c GED \u8bbe\u5907\u53d1\u9001\u4e2d\u65ad\u7ed9 Guest\u3002Guest \u54cd\u5e94\u4e2d\u65ad\uff0c\u6267\u884c ACPI \u8868\u4e2d\u7684 CSCN \u65b9\u6cd5\u83b7\u53d6\u5230\u65b0\u63d2\u5165\u7684 vCPU \u4fe1\u606f\uff0c\u6700\u540e\u901a\u77e5\u5185\u6838 CPU \u70ed\u63d2\u62d4\u6a21\u5757\u521d\u59cb\u5316\u8be5 CPU\u3002<\/p>\n

\"image2\"<\/p>\n

\u56fe2<\/strong>\u00a0vCPU \u70ed\u62d4\u6d41\u7a0b<\/p>\n

**\u70ed\u62d4\u6d41\u7a0b\uff1a**\u5f00\u53d1\u8005\u901a\u8fc7 device_del QMP \u547d\u4ee4\u5411 QEMU \u53d1\u51fa vCPU \u70ed\u62d4\u8bf7\u6c42\u3002QEMU \u89e3\u6790QMP \u547d\u4ee4\uff0c\u9996\u5148\u6807\u8bb0\u9700\u8981\u70ed\u62d4 vCPU \u4e3a removing \u72b6\u6001\uff0c\u7136\u540e\u901a\u8fc7 GED \u8bbe\u5907\u5411 Guest \u53d1\u51fa\u4e2d\u65ad\u3002Guest \u6267\u884c ACPI CSCN \u65b9\u6cd5\u4e86\u89e3\u5230\u9700\u8981\u62d4\u51fa\u7684 vCPU \u7f16\u53f7\uff0c\u901a\u77e5\u5185\u6838 CPU \u70ed\u63d2\u62d4\u6a21\u5757\u6e05\u7406\u4e0b\u7ebf\u8be5 CPU\u3002\u5b8c\u6210\u4e4b\u540e\uff0cGuest \u6267\u884c _EJ0 \u65b9\u6cd5\u901a\u77e5\u540e\u7aef QEMU \u6e05\u7406 vCPU \u8d44\u6e90\u3002QEMU \u4fee\u6539 vCPU \u7684 _STA \u72b6\u6001\u4e3a PRESENT \u4e14 DISABLE\u3002<\/p>\n

\u672a\u6765\u5c55\u671b<\/h2>\n

\u5982\u4eca\u8d44\u6e90\u5728\u7ebf\u4f38\u7f29\u5df2\u7ecf\u6210\u4e3a\u4e86\u5f88\u591a\u884c\u4e1a\u4e1a\u52a1\u573a\u666f\u7684\u5173\u952e\u9700\u6c42\uff0cvCPU \u70ed\u63d2\u62d4\u7279\u6027\u5c06\u652f\u6491 ARM \u5e73\u53f0\u670d\u52a1\u5668\u6253\u5f00\u66f4\u5927\u4e91\u6570\u636e\u4e2d\u5fc3\u5e02\u573a\u3002\u672a\u6765 openEuler \u793e\u533a\u5c06\u6301\u7eed\u5b8c\u5584\u865a\u62df\u5316\u6280\u672f\u751f\u6001\uff0c\u5f15\u9886\u6280\u672f\u521b\u65b0\uff0c\u6253\u9020\u9ad8\u6027\u80fd\u5f3a\u5b89\u5168\u8f7b\u91cf\u5316\u865a\u62df\u5316\u5e73\u53f0\uff0c\u4e3a\u5404\u884c\u5404\u4e1a\u521b\u9020\u66f4\u5927\u4ef7\u503c\u3002<\/p>\n

\u53c2\u8003\u8d44\u6599<\/h2>\n

[1] 2019 \u5e74\u534e\u4e3a\u516c\u53f8\u63d0\u4ea4\u7684 AArch64 vCPU \u70ed\u63d2\u62d4 Guest \u5185\u6838\u4fa7\u4ee3\u7801\uff1ahttps:\/\/lwn.net\/Articles\/792409\/<\/p>\n

[2] 2020 \u5e74\u534e\u4e3a\u516c\u53f8\u63d0\u4ea4\u7684 AArch64 vCPU \u70ed\u63d2\u62d4 QEMU \u4fa7\u4ee3\u7801\uff1ahttps:\/\/lore.kernel.org\/qemu-devel\/20200613213629.21984-2-salil.mehta@huawei.com\/<\/p>\n

[3] ACPI6.5 \u89c4\u8303\u5728 GICC flag \u4e2d\u65b0\u589e\u201cOnline Capable\u201d\u6807\u5fd7\u4f4d\uff1ahttps:\/\/uefi.org\/specs\/ACPI\/6.5\/05_ACPI_Software_Programming_Model.html#gicc-cpu-interface-flags<\/p>\n

[4] 2023 \u5e74 ARM \u516c\u53f8\u63d0\u4ea4\u7684 AArch64 vCPU \u70ed\u63d2\u62d4 Guest \u5185\u6838\u4fa7\u4ee3\u7801\uff1ahttps:\/\/lore.kernel.org\/lkml\/20230203135043.409192-1-james.morse@arm.com\/)<\/p>\n

[5] 2023 \u5e74\u534e\u4e3a\u516c\u53f8\u63d0\u4ea4\u7684 AArch64 vCPU \u70ed\u63d2\u62d4 QEMU \u4fa7\u4ee3\u7801\uff1ahttps:\/\/lore.kernel.org\/qemu-devel\/20230926100436.28284-1-salil.mehta@huawei.com\/<\/p>\n<\/div>\n<\/div>\n

\n
\u3010\u7248\u6743\u58f0\u660e\u3011Copyright \u00a9 2024 openEuler Community\u3002\u672c\u6587\u7531openEuler\u793e\u533a\u9996\u53d1\uff0c\u6b22\u8fce\u9075\u7167\u00a0CC-BY-SA 4.0<\/a>\u00a0\u534f\u8bae\u89c4\u5b9a\u8f6c\u8f7d\u3002\u8f6c\u8f7d\u65f6\u656c\u8bf7\u5728\u6b63\u6587\u6ce8\u660e\u5e76\u4fdd\u7559\u539f\u6587\u94fe\u63a5\u548c\u4f5c\u8005\u4fe1\u606f\u3002<\/div>\n
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