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1 files changed, 81 insertions, 0 deletions
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@@ -0,0 +1,81 @@
+x86: 0.947
+architecture: 0.814
+kernel: 0.798
+device: 0.789
+graphic: 0.772
+vnc: 0.706
+semantic: 0.601
+ppc: 0.591
+user-level: 0.478
+hypervisor: 0.413
+network: 0.400
+performance: 0.364
+socket: 0.356
+files: 0.347
+PID: 0.344
+debug: 0.332
+register: 0.321
+i386: 0.307
+permissions: 0.247
+arm: 0.236
+mistranslation: 0.227
+peripherals: 0.223
+VMM: 0.211
+TCG: 0.206
+boot: 0.201
+virtual: 0.178
+risc-v: 0.101
+assembly: 0.094
+KVM: 0.061
+--------------------
+x86: 0.993
+hypervisor: 0.943
+kernel: 0.760
+debug: 0.756
+virtual: 0.703
+TCG: 0.051
+files: 0.044
+register: 0.032
+PID: 0.023
+socket: 0.019
+KVM: 0.019
+device: 0.017
+performance: 0.013
+VMM: 0.008
+network: 0.006
+architecture: 0.006
+assembly: 0.005
+user-level: 0.005
+semantic: 0.004
+i386: 0.003
+boot: 0.003
+ppc: 0.002
+risc-v: 0.002
+peripherals: 0.002
+permissions: 0.001
+graphic: 0.001
+vnc: 0.001
+mistranslation: 0.000
+arm: 0.000
+
+hvf: RDTSCP capability not passed to guests
+Description of problem:
+
+Steps to reproduce:
+1. Run:
+wget https://dl-cdn.alpinelinux.org/alpine/v3.15/releases/x86/alpine-standard-3.15.4-x86.iso
+./qemu-system-x86_64 -cpu host,+rdtscp -machine q35,accel=hvf -m 512 -cdrom ./alpine-standard-3.15.4-x86.iso
+
+2. login as "root"
+3. type
+
+cat /etc/cpuinfo | grep rdtscp
+
+Expected result: cpu flag lines including rdtscp
+Actual result: empty, with:
+
+warning: host doesn't support requested feature: CPUID.80000001H:EDX.rdtscp [bit 27]
+Additional information:
+This patch apparently resolves the issue according to my tests:
+
+https://lore.kernel.org/qemu-devel/20211101054836.21471-1-dirty@apple.com/