On Tue, Apr 23, 2019 at 11:38:16PM +0200, Borislav Petkov wrote: > If that is all the changes it would need, then I guess that's ok. Btw, > those rst-conversion patches don't really show what got changed. Dunno > if git can even show that properly. I diffed the two files by hand to > see what got changed, see end of mail. That is not a happy diff; that table has gotten waay worse to read due to all that extra table crap. > --- > --- mm.old 2019-04-23 23:18:55.954335784 +0200 > +++ mm.new 2019-04-23 23:18:48.122335821 +0200 > @@ -18,51 +18,68 @@ Notes: > notation than "16 EB", which few will recognize at first sight as 16 exabytes. > It also shows it nicely how incredibly large 64-bit address space is. > > -======================================================================================================================== > - Start addr | Offset | End addr | Size | VM area description > -======================================================================================================================== > - | | | | > - 0000000000000000 | 0 | 00007fffffffffff | 128 TB | user-space virtual memory, different per mm > -__________________|____________|__________________|_________|___________________________________________________________ > - | | | | > - 0000800000000000 | +128 TB | ffff7fffffffffff | ~16M TB | ... huge, almost 64 bits wide hole of non-canonical > - | | | | virtual memory addresses up to the -128 TB > - | | | | starting offset of kernel mappings. > -__________________|____________|__________________|_________|___________________________________________________________ > - | > - | Kernel-space virtual memory, shared between all processes: > -____________________________________________________________|___________________________________________________________ > - | | | | > - ffff800000000000 | -128 TB | ffff87ffffffffff | 8 TB | ... guard hole, also reserved for hypervisor > - ffff880000000000 | -120 TB | ffff887fffffffff | 0.5 TB | LDT remap for PTI > - ffff888000000000 | -119.5 TB | ffffc87fffffffff | 64 TB | direct mapping of all physical memory (page_offset_base) > - ffffc88000000000 | -55.5 TB | ffffc8ffffffffff | 0.5 TB | ... unused hole > - ffffc90000000000 | -55 TB | ffffe8ffffffffff | 32 TB | vmalloc/ioremap space (vmalloc_base) > - ffffe90000000000 | -23 TB | ffffe9ffffffffff | 1 TB | ... unused hole > - ffffea0000000000 | -22 TB | ffffeaffffffffff | 1 TB | virtual memory map (vmemmap_base) > - ffffeb0000000000 | -21 TB | ffffebffffffffff | 1 TB | ... unused hole > - ffffec0000000000 | -20 TB | fffffbffffffffff | 16 TB | KASAN shadow memory > -__________________|____________|__________________|_________|____________________________________________________________ > - | > - | Identical layout to the 56-bit one from here on: > -____________________________________________________________|____________________________________________________________ > - | | | | > - fffffc0000000000 | -4 TB | fffffdffffffffff | 2 TB | ... unused hole > - | | | | vaddr_end for KASLR > - fffffe0000000000 | -2 TB | fffffe7fffffffff | 0.5 TB | cpu_entry_area mapping > - fffffe8000000000 | -1.5 TB | fffffeffffffffff | 0.5 TB | ... unused hole > - ffffff0000000000 | -1 TB | ffffff7fffffffff | 0.5 TB | %esp fixup stacks > - ffffff8000000000 | -512 GB | ffffffeeffffffff | 444 GB | ... unused hole > - ffffffef00000000 | -68 GB | fffffffeffffffff | 64 GB | EFI region mapping space > - ffffffff00000000 | -4 GB | ffffffff7fffffff | 2 GB | ... unused hole > - ffffffff80000000 | -2 GB | ffffffff9fffffff | 512 MB | kernel text mapping, mapped to physical address 0 > - ffffffff80000000 |-2048 MB | | | > - ffffffffa0000000 |-1536 MB | fffffffffeffffff | 1520 MB | module mapping space > - ffffffffff000000 | -16 MB | | | > - FIXADDR_START | ~-11 MB | ffffffffff5fffff | ~0.5 MB | kernel-internal fixmap range, variable size and offset > - ffffffffff600000 | -10 MB | ffffffffff600fff | 4 kB | legacy vsyscall ABI > - ffffffffffe00000 | -2 MB | ffffffffffffffff | 2 MB | ... unused hole > -__________________|____________|__________________|_________|___________________________________________________________ > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +| Start addr | Offset | End addr | Size | VM area description | > ++=================+============+==================+=========+===========================================================+ > +| | | | | | > +|0000000000000000 | 0 | 00007fffffffffff | 128 TB | user-space virtual memory, different per mm | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +| | | | | | > +|0000800000000000 | +128 TB | ffff7fffffffffff | ~16M TB | ... huge, almost 64 bits wide hole of non-canonical | > +| | | | | virtual memory addresses up to the -128 TB | > +| | | | | starting offset of kernel mappings. | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +| **Kernel-space virtual memory, shared between all processes:** | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +|ffff800000000000 | -128 TB | ffff87ffffffffff | 8 TB | ... guard hole, also reserved for hypervisor | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +|ffff880000000000 | -120 TB | ffff887fffffffff | 0.5 TB | LDT remap for PTI | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +|ffff888000000000 | -119.5 TB | ffffc87fffffffff | 64 TB | direct mapping of all physical memory (page_offset_base) | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +|ffffc88000000000 | -55.5 TB | ffffc8ffffffffff | 0.5 TB | ... unused hole | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +|ffffc90000000000 | -55 TB | ffffe8ffffffffff | 32 TB | vmalloc/ioremap space (vmalloc_base) | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +|ffffe90000000000 | -23 TB | ffffe9ffffffffff | 1 TB | ... unused hole | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +|ffffea0000000000 | -22 TB | ffffeaffffffffff | 1 TB | virtual memory map (vmemmap_base) | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +|ffffeb0000000000 | -21 TB | ffffebffffffffff | 1 TB | ... unused hole | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +|ffffec0000000000 | -20 TB | fffffbffffffffff | 16 TB | KASAN shadow memory | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +| **Identical layout to the 56-bit one from here on:** | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +|fffffc0000000000 | -4 TB | fffffdffffffffff | 2 TB | ... unused hole | > +| | | | | vaddr_end for KASLR | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +|fffffe0000000000 | -2 TB | fffffe7fffffffff | 0.5 TB | cpu_entry_area mapping | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +|fffffe8000000000 | -1.5 TB | fffffeffffffffff | 0.5 TB | ... unused hole | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +|ffffff0000000000 | -1 TB | ffffff7fffffffff | 0.5 TB | %esp fixup stacks | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +|ffffff8000000000 | -512 GB | ffffffeeffffffff | 444 GB | ... unused hole | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +|ffffffef00000000 | -68 GB | fffffffeffffffff | 64 GB | EFI region mapping space | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +|ffffffff00000000 | -4 GB | ffffffff7fffffff | 2 GB | ... unused hole | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +|ffffffff80000000 | -2 GB | ffffffff9fffffff | 512 MB | kernel text mapping, mapped to physical address 0 | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +|ffffffff80000000 |-2048 MB | | | | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +|ffffffffa0000000 |-1536 MB | fffffffffeffffff | 1520 MB | module mapping space | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +|ffffffffff000000 | -16 MB | | | | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +| FIXADDR_START | ~-11 MB | ffffffffff5fffff | ~0.5 MB | kernel-internal fixmap range, variable size and offset | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +|ffffffffff600000 | -10 MB | ffffffffff600fff | 4 kB | legacy vsyscall ABI | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ > +|ffffffffffe00000 | -2 MB | ffffffffffffffff | 2 MB | ... unused hole | > ++-----------------+------------+------------------+---------+-----------------------------------------------------------+ -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
