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| author | Liam Merwick <liam.merwick@oracle.com> | 2019-01-15 12:18:06 +0000 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-02-05 16:50:16 +0100 |
| commit | ab969087da65e2f67a546cfc664901eda7029e36 (patch) | |
| tree | b0c21a3ffeb0cee7a32102f9959671a05249ad42 /include/elf.h | |
| parent | 20a965067fbece568d2dcb3ccaa603723731a9f9 (diff) | |
| download | qemu-ab969087da65e2f67a546cfc664901eda7029e36.zip qemu-ab969087da65e2f67a546cfc664901eda7029e36.tar.gz qemu-ab969087da65e2f67a546cfc664901eda7029e36.tar.bz2 | |
pvh: Boot uncompressed kernel using direct boot ABI
These changes (along with corresponding Linux kernel and qboot changes)
enable a guest to be booted using the x86/HVM direct boot ABI.
This commit adds a load_elfboot() routine to pass the size and
location of the kernel entry point to qboot (which will fill in
the start_info struct information needed to to boot the guest).
Having loaded the ELF binary, load_linux() will run qboot
which continues the boot.
The address for the kernel entry point is read from an ELF Note
in the uncompressed kernel binary by a helper routine passed
to load_elf().
Co-developed-by: George Kennedy <George.Kennedy@oracle.com>
Signed-off-by: George Kennedy <George.Kennedy@oracle.com>
Signed-off-by: Liam Merwick <liam.merwick@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/elf.h')
| -rw-r--r-- | include/elf.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/elf.h b/include/elf.h index e816fb4..b35347e 100644 --- a/include/elf.h +++ b/include/elf.h @@ -1640,6 +1640,16 @@ typedef struct elf64_shdr { #define NT_ARM_HW_WATCH 0x403 /* ARM hardware watchpoint registers */ #define NT_ARM_SYSTEM_CALL 0x404 /* ARM system call number */ +/* + * Physical entry point into the kernel. + * + * 32bit entry point into the kernel. When requested to launch the + * guest kernel, use this entry point to launch the guest in 32-bit + * protected mode with paging disabled. + * + * [ Corresponding definition in Linux kernel: include/xen/interface/elfnote.h ] + */ +#define XEN_ELFNOTE_PHYS32_ENTRY 18 /* 0x12 */ /* Note header in a PT_NOTE section */ typedef struct elf32_note { |