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| author | H. Peter Anvin <hpa@zytor.com> | 2009-04-01 11:35:00 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2009-04-01 11:35:00 -0700 |
| commit | cd670599b7b00d9263f6f11a05c0edeb9cbedaf3 (patch) | |
| tree | e7aa26873f746baa1bd49cd92d3e7ab97c1716af /arch/x86/boot/printf.c | |
| parent | c549e71d073a6e9a4847497344db28a784061455 (diff) | |
x86, setup: guard against pre-ACPI 3 e820 code not updating %ecx
Impact: BIOS bug safety
For pre-ACPI 3 BIOSes, pre-initialize the end of the e820 buffer just
in case the BIOS returns an unchanged %ecx but without actually
touching the ACPI 3 extended flags field.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/boot/printf.c')
0 files changed, 0 insertions, 0 deletions