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| author | Ard Biesheuvel <ardb@kernel.org> | 2023-12-13 09:40:26 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2024-02-09 10:56:10 +0000 |
| commit | 031e011d8b22346a6513c7879cbecd7105b4c11d (patch) | |
| tree | e99c93de4ff02e21d5c55e97ffc512f175df3720 /arch/arm64/mm | |
| parent | 54be6c6c5ae8e0d93a6c4641cb7528eb0b6ba478 (diff) | |
| download | linux-stable-031e011d8b22346a6513c7879cbecd7105b4c11d.tar.gz linux-stable-031e011d8b22346a6513c7879cbecd7105b4c11d.tar.bz2 linux-stable-031e011d8b22346a6513c7879cbecd7105b4c11d.zip | |
arm64: mm: Move PCI I/O emulation region above the vmemmap region
Move the PCI I/O region above the vmemmap region in the kernel's VA
space. This will permit us to reclaim the lower part of the vmemmap
region for vmalloc/vmap allocations when running a 52-bit VA capable
build on a 48-bit VA capable system.
Also, given that PCI_IO_START is derived from VMEMMAP_END, use that
symbolic constant directly in ptdump rather than deriving it from
VMEMMAP_START and VMEMMAP_SIZE, as those definitions will change in
subsequent patches.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20231213084024.2367360-10-ardb@google.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Diffstat (limited to 'arch/arm64/mm')
| -rw-r--r-- | arch/arm64/mm/ptdump.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm64/mm/ptdump.c b/arch/arm64/mm/ptdump.c index e305b6593c4e..46acb2a24da0 100644 --- a/arch/arm64/mm/ptdump.c +++ b/arch/arm64/mm/ptdump.c @@ -47,10 +47,10 @@ static struct addr_marker address_markers[] = { { VMALLOC_END, "vmalloc() end" }, { FIXADDR_TOT_START, "Fixmap start" }, { FIXADDR_TOP, "Fixmap end" }, + { VMEMMAP_START, "vmemmap start" }, + { VMEMMAP_END, "vmemmap end" }, { PCI_IO_START, "PCI I/O start" }, { PCI_IO_END, "PCI I/O end" }, - { VMEMMAP_START, "vmemmap start" }, - { VMEMMAP_START + VMEMMAP_SIZE, "vmemmap end" }, { -1, NULL }, }; |