diff options
| author | Joe Richey <joerichey@google.com> | 2020-03-03 02:52:47 -0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-03-16 22:07:42 +0100 |
| commit | 770275ed0c0ab05677472efcf184b1a02ab14d07 (patch) | |
| tree | 69a6e8b7faa06fd3e6f62c76a1d54a3f86922902 /pc-bios/optionrom | |
| parent | 4ce1e15fbc7266a108a7c77a3962644b3935346e (diff) | |
optionrom/pvh: scan entire RSDP Area
Right now the PVH option rom scans for the RSDP from 0xE0000 to
0xE1FFF. This is probobly a typo, it should scan from 0xE0000 to
0xFFFFF.
This is actually an issue on some QEMU versions/machines. For example,
when I run QEMU the RSDP is placed at 0xf5ad0 which will not be picked
up by the current implementation.
This bug still allows a Linux guest to boot (in most configurations) as
the kernel will just scan for the RSDP if one isn't provided.
Signed-off-by: Joe Richey <joerichey@google.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Fixes: 2785dc7b17 ("optionrom: add new PVH option rom")
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'pc-bios/optionrom')
| -rw-r--r-- | pc-bios/optionrom/pvh_main.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/pc-bios/optionrom/pvh_main.c b/pc-bios/optionrom/pvh_main.c index a015e1bf22..28e79d7fc4 100644 --- a/pc-bios/optionrom/pvh_main.c +++ b/pc-bios/optionrom/pvh_main.c @@ -29,7 +29,7 @@ asm (".code32"); /* this code will be executed in protected mode */ #define RSDP_SIGNATURE 0x2052545020445352LL /* "RSD PTR " */ #define RSDP_AREA_ADDR 0x000E0000 -#define RSDP_AREA_SIZE 2048 +#define RSDP_AREA_SIZE 0x00020000 #define EBDA_BASE_ADDR 0x0000040E #define EBDA_SIZE 1024 |