| Message ID | 20231213084024.2367360-9-ardb@google.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | arm64: Reorganize kernel VA space | expand |
On Wed, 13 Dec 2023 09:40:25 +0100, Ard Biesheuvel wrote: > These seven patches were taken from [0] and tweaked to address the > feedback by Mark Rutland. They reconfigure the upper region of the > kernel VA space so that the vmemmap region can be resized dynamically > on 52-bit builds running on 48-bit-only hardware. This is needed for > LPA2 support. > > They can be applied onto the arm62 lpa2-prep branch. > > [...] Applied to arm64 (for-next/reorg-va-space), thanks! [1/7] arm64: mm: Move PCI I/O emulation region above the vmemmap region https://git.kernel.org/arm64/c/031e011d8b22 [2/7] arm64: mm: Move fixmap region above vmemmap region https://git.kernel.org/arm64/c/b730b0f2b1fc [3/7] arm64: ptdump: Allow all region boundaries to be defined at boot time https://git.kernel.org/arm64/c/34f879fbe461 [4/7] arm64: ptdump: Discover start of vmemmap region at runtime https://git.kernel.org/arm64/c/f9cca2444187 [5/7] arm64: vmemmap: Avoid base2 order of struct page size to dimension region https://git.kernel.org/arm64/c/32697ff38287 [6/7] arm64: mm: Reclaim unused vmemmap region for vmalloc use https://git.kernel.org/arm64/c/d432b8d57c0c [7/7] arm64: kaslr: Adjust randomization range dynamically https://git.kernel.org/arm64/c/3567fa63cb56
From: Ard Biesheuvel <ardb@kernel.org> These seven patches were taken from [0] and tweaked to address the feedback by Mark Rutland. They reconfigure the upper region of the kernel VA space so that the vmemmap region can be resized dynamically on 52-bit builds running on 48-bit-only hardware. This is needed for LPA2 support. They can be applied onto the arm62 lpa2-prep branch. [0] https://lore.kernel.org/all/20231129111555.3594833-43-ardb@google.com v7: - add static assert to avoid the fixmap overlapping with the PCI I/O region - avoid deriving VMEMMAP_END from VMEMMAP_START+VMEMMAP_SIZE in ptdump.c - add ack from Mark Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Marc Zyngier <maz@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Ard Biesheuvel (7): arm64: mm: Move PCI I/O emulation region above the vmemmap region arm64: mm: Move fixmap region above vmemmap region arm64: ptdump: Allow all region boundaries to be defined at boot time arm64: ptdump: Discover start of vmemmap region at runtime arm64: vmemmap: Avoid base2 order of struct page size to dimension region arm64: mm: Reclaim unused vmemmap region for vmalloc use arm64: kaslr: Adjust randomization range dynamically arch/arm64/include/asm/memory.h | 14 ++--- arch/arm64/include/asm/pgtable.h | 10 ++-- arch/arm64/kernel/image-vars.h | 2 + arch/arm64/kernel/pi/kaslr_early.c | 11 ++-- arch/arm64/mm/fixmap.c | 3 ++ arch/arm64/mm/ptdump.c | 56 +++++++++----------- 6 files changed, 49 insertions(+), 47 deletions(-)