On 11/18/2016 04:34 PM, Jeremy Linton wrote:
On 11/18/2016 04:29 PM, Jeremy Linton wrote:
The current RHELSA kernel is using a 42bit VA which is too limiting for possible near future workloads. Update this to 48 bits. This patch has a dependency on mozjs versions in the distro being patched to work with virtual address spaces >47 bits.
Just a quick comment. An easy way to verify that the kernel in use has 48bit VA's is to check the /proc/xxx/maps of a userspace process.
A 48bit VA kernel will place shared libraries into addresses at the top of the userspace address region. For example:
In thinking about this a bit more, I'd like to hold off on merging the 48bit VA patches in for the initial install kernel so that we have time to discuss the potential implications a bit more. We can always merge/push it as an update once we're a bit more clear on the impact of the fixes.