Messages in this thread | | | Date | Thu, 10 Nov 2022 20:34:59 +0000 | Subject | [PATCH v2 0/5] x86/kasan: Bug fixes for recent CEA changes | From | Sean Christopherson <> |
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Three fixes for the recent changes to how KASAN populates shadows for the per-CPU portion of the CPU entry areas. The v1 versions were posted independently as I kept root causing issues after posting individual fixes.
v2: - Map the entire per-CPU area in one shot. [Andrey] - Use the "early", i.e. read-only, variant to populate the shadow for the shared portion (read-only IDT mapping) of the CEA. [Andrey]
v1: - https://lore.kernel.org/all/20221104212433.1339826-1-seanjc@google.com - https://lore.kernel.org/all/20221104220053.1702977-1-seanjc@google.com - https://lore.kernel.org/all/20221104183247.834988-1-seanjc@google.com
Sean Christopherson (5): x86/mm: Recompute physical address for every page of per-CPU CEA mapping x86/mm: Populate KASAN shadow for entire per-CPU range of CPU entry area x86/kasan: Rename local CPU_ENTRY_AREA variables to shorten names x86/kasan: Add helpers to align shadow addresses up and down x86/kasan: Populate shadow for shared chunk of the CPU entry area
arch/x86/mm/cpu_entry_area.c | 10 +++----- arch/x86/mm/kasan_init_64.c | 50 +++++++++++++++++++++++------------- 2 files changed, 36 insertions(+), 24 deletions(-)
base-commit: 0008712a508f72242d185142cfdbd0646a661a18 -- 2.38.1.431.g37b22c650d-goog
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