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011d4528 |
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06-Feb-2018 |
Adrian Danis <Adrian.Danis@data61.csiro.au> |
x86: Declare node_info as VISIBLE node_info is referenced in the linker script and so we must declare it as externally visible to prevent compiling from eliding it
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29695d26 |
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07-Jan-2018 |
Adrian Danis <Adrian.Danis@data61.csiro.au> |
x64: SKIM window to mitigate Meltdown (CVE-2017-5754) on x86-64 Introduces a kernel option that, when enabled, reduces the kernel window in a user address space to just be Static Kernel Image and Microstate (SKIM), instead of the full kernel address space. This isolates the important kernel data from the user preventing a Meltdown style attack being able to violate secrecy. The kernel text and read only data, i.e. anything that is static from boot, is not secret and can be allowed in the SKIM window and potentially read by the user. Additionally to switch to and from the actual kernel address space a small amount of state needs to also be in the SKIM window. This is only an implementation for x86-64, although the same design is applicable to ia32
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63198a7f |
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08-Jan-2018 |
Adrian Danis <Adrian.Danis@data61.csiro.au> |
x64: Align and pad node_info node_info is a per-core data structure and should have always been padded and aligned to a cache line to ensure there is no false sharing of cache lines
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a9dc424a |
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05-Jan-2018 |
Adrian Danis <Adrian.Danis@data61.csiro.au> |
x64: Remove IRQ stack from per core data structure The IRQ stack represents state that needs to be available in all contexts, both when user code is running and when kernel code is running. Separating its definition from all the other mode state provides the option in the future for treating it differently.
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ee28936d |
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18-Jun-2017 |
Hesham Almatary <hesham.almatary@data61.csiro.au> |
SMP: Introduce ENABLE_SMP_SUPPORT - Make it more readable and less confusing compared to the 'CONFIG_MAX_NUM_NODES > 1' check
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40c61e5c |
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18-Jun-2017 |
Anna Lyons <Anna.Lyons@data61.csiro.au> |
Fix licenses (the rest)
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eccaae51 |
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20-Feb-2017 |
Adrian Danis <Adrian.Danis@data61.csiro.au> |
s/D61/DATA61/ in license headers for consistency
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5037717c |
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11-Jan-2017 |
Adrian Danis <Adrian.Danis@data61.csiro.au> |
x86: Explicitly define kernel stack size This commit changes the previous hard coded 4K kernel stack size to being a configurable power of 2 sized stack
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a0cb9e67 |
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09-Nov-2016 |
Adrian Danis <Adrian.Danis@data61.csiro.au> |
x64: Support multiple kernel stacks Adds support for per-core kernel stacks through the use of thread local storage and swapgs. In addition to the main kernel stack the IRQ stack also needs to be made per core
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