Re: [U-Boot] [PATCH 3/4] ARM: mach-omap2: omap5/dra7: Enable ACTLR[0] (Enable invalidates of BTB) to facilitate CVE_2017-5715 WA in OS

2018-06-13 Thread Russell King - ARM Linux
On Wed, Jun 13, 2018 at 10:36:56PM +0200, Marek Vasut wrote: > On 06/13/2018 07:36 PM, Russell King - ARM Linux wrote: > > On Wed, Jun 13, 2018 at 01:06:13AM +0200, Marek Vasut wrote: > >> On 06/12/2018 10:24 PM, Nishanth Menon wrote: > >>> Enable CVE_2017_5715 and since we have our own v7_arch_cp1

Re: [U-Boot] [PATCH 3/4] ARM: mach-omap2: omap5/dra7: Enable ACTLR[0] (Enable invalidates of BTB) to facilitate CVE_2017-5715 WA in OS

2018-06-13 Thread Nishanth Menon
On 20:36-20180613, Marek Vasut wrote: > On 06/13/2018 07:36 PM, Russell King - ARM Linux wrote: > > On Wed, Jun 13, 2018 at 01:06:13AM +0200, Marek Vasut wrote: > >> On 06/12/2018 10:24 PM, Nishanth Menon wrote: > >>> Enable CVE_2017_5715 and since we have our own v7_arch_cp15_set_acr > >>> functio

Re: [U-Boot] [PATCH 3/4] ARM: mach-omap2: omap5/dra7: Enable ACTLR[0] (Enable invalidates of BTB) to facilitate CVE_2017-5715 WA in OS

2018-06-13 Thread Marek Vasut
On 06/13/2018 07:36 PM, Russell King - ARM Linux wrote: > On Wed, Jun 13, 2018 at 01:06:13AM +0200, Marek Vasut wrote: >> On 06/12/2018 10:24 PM, Nishanth Menon wrote: >>> Enable CVE_2017_5715 and since we have our own v7_arch_cp15_set_acr >>> function to setup the bits, we are able to override the

Re: [U-Boot] [PATCH 3/4] ARM: mach-omap2: omap5/dra7: Enable ACTLR[0] (Enable invalidates of BTB) to facilitate CVE_2017-5715 WA in OS

2018-06-13 Thread Russell King - ARM Linux
On Wed, Jun 13, 2018 at 01:06:13AM +0200, Marek Vasut wrote: > On 06/12/2018 10:24 PM, Nishanth Menon wrote: > > Enable CVE_2017_5715 and since we have our own v7_arch_cp15_set_acr > > function to setup the bits, we are able to override the settings. > > > > Without this enabled, Linux kernel repo

Re: [U-Boot] [PATCH 3/4] ARM: mach-omap2: omap5/dra7: Enable ACTLR[0] (Enable invalidates of BTB) to facilitate CVE_2017-5715 WA in OS

2018-06-13 Thread Nishanth Menon
On 23:06-20180612, Marek Vasut wrote: > On 06/12/2018 10:24 PM, Nishanth Menon wrote: > > Enable CVE_2017_5715 and since we have our own v7_arch_cp15_set_acr > > function to setup the bits, we are able to override the settings. > > > > Without this enabled, Linux kernel reports: > > CPU0: Spectre

Re: [U-Boot] [PATCH 3/4] ARM: mach-omap2: omap5/dra7: Enable ACTLR[0] (Enable invalidates of BTB) to facilitate CVE_2017-5715 WA in OS

2018-06-12 Thread Marek Vasut
On 06/12/2018 10:24 PM, Nishanth Menon wrote: > Enable CVE_2017_5715 and since we have our own v7_arch_cp15_set_acr > function to setup the bits, we are able to override the settings. > > Without this enabled, Linux kernel reports: > CPU0: Spectre v2: firmware did not set auxiliary control registe

[U-Boot] [PATCH 3/4] ARM: mach-omap2: omap5/dra7: Enable ACTLR[0] (Enable invalidates of BTB) to facilitate CVE_2017-5715 WA in OS

2018-06-12 Thread Nishanth Menon
Enable CVE_2017_5715 and since we have our own v7_arch_cp15_set_acr function to setup the bits, we are able to override the settings. Without this enabled, Linux kernel reports: CPU0: Spectre v2: firmware did not set auxiliary control register IBE bit, system vulnerable With this enabled, Linux