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The code at the trampoline entry point is executed in real-mode. In real-mode, #VC exceptions can't be handled so anything that might cause such an exception must be avoided. In the standard trampoline entry code this is the WBINVD instruction and the call to verify_cpu(), which are both not needed anyway when running as an SEV-ES guest. Signed-off-by: Joerg Roedel <jroedel@suse.de> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lkml.kernel.org/r/20200907131613.12703-66-joro@8bytes.org |
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| .. | ||
| .gitignore | ||
| bioscall.S | ||
| copy.S | ||
| header.S | ||
| Makefile | ||
| realmode.h | ||
| realmode.lds.S | ||
| reboot.S | ||
| regs.c | ||
| stack.S | ||
| trampoline_32.S | ||
| trampoline_64.S | ||
| trampoline_common.S | ||
| video-bios.c | ||
| video-mode.c | ||
| video-vesa.c | ||
| video-vga.c | ||
| wakemain.c | ||
| wakeup_asm.S | ||
| wakeup.h | ||