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Mark all files used in a standard build of bin-x86_64-efi/snponly.efi
as permitted for UEFI Secure Boot. These files represent the core
functionality of iPXE that is guaranteed to have been included in
every binary that was previously subject to a security review and
signed by Microsoft. It is therefore legitimate to assume that at
least these files have already been reviewed to the required standard
multiple times.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Size-tracked pointers allocated via umalloc() have historically been
aligned to a page boundary, as have the edges of the hidden memory
region covering the external heap.
Allow the block and size-tracked pointer alignments to be specified as
heap configuration parameters.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Create a generic model of a heap as a list of free blocks with
optional methods for growing and shrinking the heap.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Use standard void pointers for umalloc(), urealloc(), and ufree(),
with the "u" prefix retained to indicate that these allocations are
made from external ("user") memory rather than from the internal heap.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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When allocating memory with a non-zero alignment offset, the free
memory block structure following the allocation may end up improperly
aligned.
Ensure that free memory blocks always remain aligned to the size of
the free memory block structure.
Ensure that the initial heap is also correctly aligned, thereby
allowing the logic for leaking undersized free memory blocks to be
omitted.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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The malloc_dma() function allocates memory with specified physical
alignment, and is typically (though not exclusively) used to allocate
memory for DMA.
Rename to malloc_phys() to more closely match the functionality, and
to create name space for functions that specifically allocate and map
DMA-capable buffers.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Track the current and maximum heap usage, and display the maximum
during shutdown when DEBUG=malloc is enabled.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Allow for allocation of memory blocks having a specified offset from a
specified physical alignment, such as being 12 bytes before a 2kB
boundary.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Discarding the active ARP cache entry in the middle of a download will
substantially disrupt the TCP stream. Try to minimise any such
disruption by treating ARP cache entries as expensive, and discarding
them only when nothing else is available to discard.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Make the allocators used by malloc and linux_umalloc valgrindable.
Include valgrind headers in the codebase to avoid a build dependency
on valgrind.
Signed-off-by: Piotr Jaroszyński <p.jaroszynski@gmail.com>
Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Add a facility allowing cached data to be discarded in order to
satisfy memory allocations that would otherwise fail.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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Access to the gpxe.org and etherboot.org domains and associated
resources has been revoked by the registrant of the domain. Work
around this problem by renaming project from gPXE to iPXE, and
updating URLs to match.
Also update README, LOG and COPYRIGHTS to remove obsolete information.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
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