Re: [PATCH V32 19/27] x86/mmiotrace: Lock down the testmmiotrace module

2019-04-04 Thread Thomas Gleixner
On Wed, 3 Apr 2019, Matthew Garrett wrote: > From: David Howells > > The testmmiotrace module shouldn't be permitted when the kernel is locked > down as it can be used to arbitrarily read and write MMIO space. This is > a runtime check rather than buildtime in order to allow configurations > whe

Re: [PATCH V32 19/27] x86/mmiotrace: Lock down the testmmiotrace module

2019-04-03 Thread Steven Rostedt
On Wed, 3 Apr 2019 17:32:41 -0700 Matthew Garrett wrote: > From: David Howells > > The testmmiotrace module shouldn't be permitted when the kernel is locked > down as it can be used to arbitrarily read and write MMIO space. This is > a runtime check rather than buildtime in order to allow conf

[PATCH V32 19/27] x86/mmiotrace: Lock down the testmmiotrace module

2019-04-03 Thread Matthew Garrett
From: David Howells The testmmiotrace module shouldn't be permitted when the kernel is locked down as it can be used to arbitrarily read and write MMIO space. This is a runtime check rather than buildtime in order to allow configurations where the same kernel may be run in both locked down or per