Chip flaw: Problems in patches for Spectre, Meltdown extends

Skylake

According to Intel VP and general manager of the Data Center Group, Navin Shenoy, updates to PCs with Ivy Bridge, Sandy Bridge, Skylake, and the current flagship Kaby Lake processors were just as vulnerable as those packing older Broadwell ad Haswell chips. It will provide beta microcode to vendors for validation by next week.

"While the firmware updates are effective at mitigating exposure to the security issues, customers have reported more frequent reboots on firmware-updated systems". "To date, we have tested server platforms running two-socket Intel Xeon Scalable systems - code-named Skylake, our latest server microarchitecture", Shenoy says. Later, Intel published their own results after testing the performance impact of their security fixes with nearly same numbers.

"Most users are going to hear things like security flaw, or performance issues and be very concerned so I would really like to see Intel do more to address those topics", said one partner, who wished to remain anonymous. "Generally speaking, the workloads that incorporate a larger number of user/kernel privilege changes and spend a significant amount of time in privileged mode will be more adversely impacted".

Impacts ranging from 0-2% on industry-standard measures of integer and floating point throughput, Linpack, STREAM, server-side Java and energy efficiency benchmarks. As a typical example, Intel tested a system simulating a brokerage firm's customer-broker-stock exchange interaction and found it slowed the system by four percent.

"Arm appreciates Congressman McNerney's long record of work on cybersecurity issues, has responded to his office to discuss next steps, and looks forward to a dialogue on our mutual goal of creating more secure devices", the company said in a statement. More analytics testing is in process and the results will be dependent on system configuration, test setup and benchmark used.

The story was different with I/O loads, however. Using SPDK vHost, we saw no impact.

Advanced Micro Devices (AMD) is not as insulated from the recent central processing unit (CPU) security flaw debacle, as the CPU manufacturer is now facing two class action lawsuits like its competitor Intel.

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