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| author |   Ard Biesheuvel <ardb@kernel.org> | 2023-08-07 18:27:06 +0200 |
|---|---|---|
| committer |   Borislav Petkov (AMD) <bp@alien8.de> | 2023-08-07 20:43:13 +0200 |
| commit | e8972a76aa90c05a0078043413f806c02fcb3487 (patch) | |
| tree | 453fbd3ffba69c6eaeeba14ddab97d9951d88e58 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | x86/decompressor: Assign paging related global variables earlier (diff) | |
| download | wireguard-linux-e8972a76aa90c05a0078043413f806c02fcb3487.tar.xz wireguard-linux-e8972a76aa90c05a0078043413f806c02fcb3487.zip | |
x86/decompressor: Call trampoline as a normal function
Move the long return to switch to 32-bit mode into the trampoline code
so it can be called as an ordinary function. This will allow it to be
called directly from C code in a subsequent patch.
While at it, reorganize the code somewhat to keep the prologue and
epilogue of the function together, making the code a bit easier to
follow. Also, given that the trampoline is now entered in 64-bit mode, a
simple RIP-relative reference can be used to take the address of the
exit point.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Link: https://lore.kernel.org/r/20230807162720.545787-10-ardb@kernel.org
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