Disabling CPU vulnerabilities workarounds (second try)

2018-11-17 Thread Artem S. Tashkinov
Hello, I'm resending my last email since the first one didn't draw enough attention despite the gravity of the situation and the issue has been exacerbated by the recent kernel 4.20 changes which incur even a larger performance loss - up to 50% according to the most recent Phoronix testing:

Disabling CPU vulnerabilities workarounds (second try)

2018-11-17 Thread Artem S. Tashkinov
Hello, I'm resending my last email since the first one didn't draw enough attention despite the gravity of the situation and the issue has been exacerbated by the recent kernel 4.20 changes which incur even a larger performance loss - up to 50% according to the most recent Phoronix testing:

Re: Disabling CPU vulnerabilities workarounds

2018-08-26 Thread Casey Schaufler
On 8/25/2018 4:28 PM, Artem S. Tashkinov wrote: > On 08/25/2018 06:39 PM, Casey Schaufler wrote: >> On 8/25/2018 3:42 AM, Artem S. Tashkinov wrote: >>> Hello LKML, >>> >>> As time goes by more and more fixes of Intel/AMD/ARM CPUs vulnerabilities >>> are added to the Linux kernel without a simple

Re: Disabling CPU vulnerabilities workarounds

2018-08-26 Thread Casey Schaufler
On 8/25/2018 4:28 PM, Artem S. Tashkinov wrote: > On 08/25/2018 06:39 PM, Casey Schaufler wrote: >> On 8/25/2018 3:42 AM, Artem S. Tashkinov wrote: >>> Hello LKML, >>> >>> As time goes by more and more fixes of Intel/AMD/ARM CPUs vulnerabilities >>> are added to the Linux kernel without a simple

Re: Disabling CPU vulnerabilities workarounds

2018-08-25 Thread Artem S. Tashkinov
On 08/25/2018 06:39 PM, Casey Schaufler wrote: On 8/25/2018 3:42 AM, Artem S. Tashkinov wrote: Hello LKML, As time goes by more and more fixes of Intel/AMD/ARM CPUs vulnerabilities are added to the Linux kernel without a simple way to disable them all in one fell swoop. Many of the

Re: Disabling CPU vulnerabilities workarounds

2018-08-25 Thread Artem S. Tashkinov
On 08/25/2018 06:39 PM, Casey Schaufler wrote: On 8/25/2018 3:42 AM, Artem S. Tashkinov wrote: Hello LKML, As time goes by more and more fixes of Intel/AMD/ARM CPUs vulnerabilities are added to the Linux kernel without a simple way to disable them all in one fell swoop. Many of the

Re: Disabling CPU vulnerabilities workarounds

2018-08-25 Thread Casey Schaufler
On 8/25/2018 3:42 AM, Artem S. Tashkinov wrote: > Hello LKML, > > As time goes by more and more fixes of Intel/AMD/ARM CPUs vulnerabilities are > added to the Linux kernel without a simple way to disable them all in one > fell swoop. Many of the mitigations are unrelated to each other. There is

Re: Disabling CPU vulnerabilities workarounds

2018-08-25 Thread Casey Schaufler
On 8/25/2018 3:42 AM, Artem S. Tashkinov wrote: > Hello LKML, > > As time goes by more and more fixes of Intel/AMD/ARM CPUs vulnerabilities are > added to the Linux kernel without a simple way to disable them all in one > fell swoop. Many of the mitigations are unrelated to each other. There is

Disabling CPU vulnerabilities workarounds

2018-08-25 Thread Artem S. Tashkinov
Hello LKML, As time goes by more and more fixes of Intel/AMD/ARM CPUs vulnerabilities are added to the Linux kernel without a simple way to disable them all in one fell swoop. Disabling is a good option for strictly confined environments where no 3d party untrusted code is ever to be run,

Disabling CPU vulnerabilities workarounds

2018-08-25 Thread Artem S. Tashkinov
Hello LKML, As time goes by more and more fixes of Intel/AMD/ARM CPUs vulnerabilities are added to the Linux kernel without a simple way to disable them all in one fell swoop. Disabling is a good option for strictly confined environments where no 3d party untrusted code is ever to be run,

Disabling CPU vulnerabilities workarounds

2018-08-23 Thread Artem S. Tashkinov
Hello LKML, As time goes by more and more fixes of Intel/AMD/ARM CPUs vulnerabilities are added to the Linux kernel without a simple way to disable them all in one fell swoop. Disabling is a good option for strictly confined environments where no 3d party untrusted code is ever to be run,

Disabling CPU vulnerabilities workarounds

2018-08-23 Thread Artem S. Tashkinov
Hello LKML, As time goes by more and more fixes of Intel/AMD/ARM CPUs vulnerabilities are added to the Linux kernel without a simple way to disable them all in one fell swoop. Disabling is a good option for strictly confined environments where no 3d party untrusted code is ever to be run,