Hello Jason Lowe-Power, Alexandru Duțu, Andreas Sandberg, Brandon Potter,
I'd like you to reexamine a change. Please visit
https://gem5-review.googlesource.com/7350
to look at the new patch set (#3).
Change subject: arch, mem: Abstract the data stored in the SE page tables.
......................................................................
arch, mem: Abstract the data stored in the SE page tables.
Rather than store the actual TLB entry that corresponds to a mapping,
we can just store some abstracted information (address, a few flags)
and then let the caller turn that into the appropriate entry. There
could potentially be some small amount of overhead from creating
entries vs. storing them and just installing them, but it's likely
pretty minimal since that only happens on a TLB miss (ideally rare),
and, if it is problematic, there could be some preallocated TLB
entries which are just minimally filled in as necessary.
This has the nice effect of finally making the page tables ISA
agnostic.
Change-Id: I11e630f60682f0a0029b0683eb8ff0135fbd4317
---
M src/arch/alpha/faults.cc
M src/arch/sparc/faults.cc
M src/arch/x86/tlb.cc
M src/gpu-compute/gpu_tlb.cc
M src/mem/page_table.cc
M src/mem/page_table.hh
M src/sim/syscall_emul.hh
7 files changed, 105 insertions(+), 87 deletions(-)
--
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Gerrit-Project: public/gem5
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I11e630f60682f0a0029b0683eb8ff0135fbd4317
Gerrit-Change-Number: 7350
Gerrit-PatchSet: 3
Gerrit-Owner: Gabe Black <gabebl...@google.com>
Gerrit-Reviewer: Alexandru Duțu <alexandru.d...@amd.com>
Gerrit-Reviewer: Andreas Sandberg <andreas.sandb...@arm.com>
Gerrit-Reviewer: Brandon Potter <brandon.pot...@amd.com>
Gerrit-Reviewer: Gabe Black <gabebl...@google.com>
Gerrit-Reviewer: Jason Lowe-Power <ja...@lowepower.com>
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