x86/efi: Use all 64 bit of efi_memmap in setup_e820()

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commit 7cc03e4896 upstream.

The efi_info structure stores low 32 bits of memory map
in efi_memmap and high 32 bits in efi_memmap_hi.

While constructing pointer in the setup_e820(), need
to take into account all 64 bit of the pointer.

It is because on 64bit machine the function
efi_get_memory_map() may return full 64bit pointer and before
the patch that pointer was truncated.

The issue is triggered on Parallles virtual machine and
fixed with this patch.

Signed-off-by: Dmitry Skorodumov <sdmitry@parallels.com>
Cc: Denis V. Lunev <den@openvz.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Dmitry Skorodumov 2015-07-28 18:38:32 +04:00 • committed by Greg Kroah-Hartman

parent c54f557fa5

commit e8647ec68f

1 changed files with 4 additions and 0 deletions

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arch/x86/boot/compressed/eboot.c

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