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hw/x86: add a couple of comments explaining how the kernel image is parsed 

Cosmetic: add comments in x86_load_linux() pointing to the kernel documentation
so that users can better understand the code.

CC: qemu-trivial@nongnu.org
Signed-off-by: Ani Sinha <anisinha@redhat.com>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This commit is contained in:
Ani Sinha 2024-07-19 19:19:37 +05:30 committed by Michael Tokarev
parent 407f9a4b12
commit 80e3541282
1 changed files with 5 additions and 2 deletions
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7
hw/i386/x86-common.c
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@ -665,8 +665,11 @@ void x86_load_linux(X86MachineState *x86ms,
exit(1); exit(1);
} }
/* kernel protocol version */ /*
if (ldl_p(header + 0x202) == 0x53726448) { * kernel protocol version.
* Please see https://www.kernel.org/doc/Documentation/x86/boot.txt
*/
if (ldl_p(header + 0x202) == 0x53726448) /* Magic signature "HdrS" */ {
protocol = lduw_p(header + 0x206); protocol = lduw_p(header + 0x206);
} else { } else {
/* /*