| commit | 2870b77cd5d04addc8e956ba21e91bde08e4db66 | |
| author | Sergey Vlasov <vsu@altlinux.ru> | |
| Tue, 22 Jul 2008 09:46:08 +0000 (22 13:46 +0400) | ||
| committer | H. Peter Anvin <hpa@zytor.com> | |
| Tue, 22 Jul 2008 16:58:02 +0000 (22 12:58 -0400) | ||
| tree | 28d93d209691950a361cfb98ba5812e3201ca970 | treesnapshot (tar.gz zip) |
| parent | eec9fe478cfcf9ba45455f68715cba4b57be7ea6 | commitdiff |
Fix initrd overwriting the kernel for some kernel sizes
The address in EDI returned by the load_high call used to load the
kernel needs to be passed to parse_load_initrd, but the code which
clears memory after setup sectors for 1.2.x kernels was corrupting
low 16 bits of EDI. In most cases this corruption was not noticed,
because with usual setup sizes DI was set to 0xf800, therefore the
chance of getting the kernel size such that initrd would actually
overwrite the kernel was about 3%.
Signed-off-by: Sergey Vlasov <vsu@altlinux.ru>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
The address in EDI returned by the load_high call used to load the
kernel needs to be passed to parse_load_initrd, but the code which
clears memory after setup sectors for 1.2.x kernels was corrupting
low 16 bits of EDI. In most cases this corruption was not noticed,
because with usual setup sizes DI was set to 0xf800, therefore the
chance of getting the kernel size such that initrd would actually
overwrite the kernel was about 3%.
Signed-off-by: Sergey Vlasov <vsu@altlinux.ru>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| core/runkernel.inc | diffblobblamehistory |