Re: [PATCH] [stable 4.9] arm64: Add work around for Arm Cortex-A55 Erratum 1024718

2018-05-12 Thread Greg KH
On Fri, May 11, 2018 at 05:06:20PM +0100, Suzuki K Poulose wrote: > On 11/05/18 16:47, Greg KH wrote: > > On Fri, May 11, 2018 at 02:51:15PM +0100, Suzuki K Poulose wrote: > > > commit ece1397cbc89c51914fae1aec729539cfd8bd62b upstream > > > > > > Some variants of the Arm Cortex-55 cores (r0p0,

Re: [PATCH] [stable 4.9] arm64: Add work around for Arm Cortex-A55 Erratum 1024718

2018-05-12 Thread Greg KH
On Fri, May 11, 2018 at 05:06:20PM +0100, Suzuki K Poulose wrote: > On 11/05/18 16:47, Greg KH wrote: > > On Fri, May 11, 2018 at 02:51:15PM +0100, Suzuki K Poulose wrote: > > > commit ece1397cbc89c51914fae1aec729539cfd8bd62b upstream > > > > > > Some variants of the Arm Cortex-55 cores (r0p0,

Re: [PATCH] [stable 4.9] arm64: Add work around for Arm Cortex-A55 Erratum 1024718

2018-05-11 Thread Suzuki K Poulose
On 11/05/18 16:47, Greg KH wrote: On Fri, May 11, 2018 at 02:51:15PM +0100, Suzuki K Poulose wrote: commit ece1397cbc89c51914fae1aec729539cfd8bd62b upstream Some variants of the Arm Cortex-55 cores (r0p0, r0p1, r1p0) suffer from an erratum 1024718, which causes incorrect updates when DBM/AP

Re: [PATCH] [stable 4.9] arm64: Add work around for Arm Cortex-A55 Erratum 1024718

2018-05-11 Thread Suzuki K Poulose
On 11/05/18 16:47, Greg KH wrote: On Fri, May 11, 2018 at 02:51:15PM +0100, Suzuki K Poulose wrote: commit ece1397cbc89c51914fae1aec729539cfd8bd62b upstream Some variants of the Arm Cortex-55 cores (r0p0, r0p1, r1p0) suffer from an erratum 1024718, which causes incorrect updates when DBM/AP

Re: [PATCH] [stable 4.9] arm64: Add work around for Arm Cortex-A55 Erratum 1024718

2018-05-11 Thread Greg KH
On Fri, May 11, 2018 at 02:51:15PM +0100, Suzuki K Poulose wrote: > commit ece1397cbc89c51914fae1aec729539cfd8bd62b upstream > > Some variants of the Arm Cortex-55 cores (r0p0, r0p1, r1p0) suffer > from an erratum 1024718, which causes incorrect updates when DBM/AP > bits in a page table entry is

Re: [PATCH] [stable 4.9] arm64: Add work around for Arm Cortex-A55 Erratum 1024718

2018-05-11 Thread Greg KH
On Fri, May 11, 2018 at 02:51:15PM +0100, Suzuki K Poulose wrote: > commit ece1397cbc89c51914fae1aec729539cfd8bd62b upstream > > Some variants of the Arm Cortex-55 cores (r0p0, r0p1, r1p0) suffer > from an erratum 1024718, which causes incorrect updates when DBM/AP > bits in a page table entry is

[PATCH] [stable 4.9] arm64: Add work around for Arm Cortex-A55 Erratum 1024718

2018-05-11 Thread Suzuki K Poulose
commit ece1397cbc89c51914fae1aec729539cfd8bd62b upstream Some variants of the Arm Cortex-55 cores (r0p0, r0p1, r1p0) suffer from an erratum 1024718, which causes incorrect updates when DBM/AP bits in a page table entry is modified without a break-before-make sequence. The work around is to

[PATCH] [stable 4.9] arm64: Add work around for Arm Cortex-A55 Erratum 1024718

2018-05-11 Thread Suzuki K Poulose
commit ece1397cbc89c51914fae1aec729539cfd8bd62b upstream Some variants of the Arm Cortex-55 cores (r0p0, r0p1, r1p0) suffer from an erratum 1024718, which causes incorrect updates when DBM/AP bits in a page table entry is modified without a break-before-make sequence. The work around is to