| From | Lai Jiangshan <> | Date | Sat, 4 Sep 2021 17:39:41 +0800 | Subject | Re: [PATCH v6 42/76] x86/sev-es: Setup early #VC handler |
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> @@ -363,6 +370,33 @@ SYM_CODE_START_LOCAL(early_idt_handler_common) > jmp restore_regs_and_return_to_kernel > SYM_CODE_END(early_idt_handler_common) > > +#ifdef CONFIG_AMD_MEM_ENCRYPT > +/* > + * VC Exception handler used during very early boot. The > + * early_idt_handler_array can't be used because it returns via the > + * paravirtualized INTERRUPT_RETURN and pv-ops don't work that early.
Hello Joerg, Juergen
The commit ae755b5a4548 ("x86/paravirt: Switch iret pvops to ALTERNATIVE") ( https://lore.kernel.org/lkml/20210311142319.4723-12-jgross@suse.com/ ) had been merged and the paravirt_iret is deferenced based via %rip.
Can INTERRUPT_RETURN still be a problem if early_idt_handler_array is used instead for bringup IDT?
Thanks Lai
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