Messages in this thread | | | Date | Tue, 6 Jun 2023 12:46:39 +0200 | From | Borislav Petkov <> | Subject | Re: [RESEND PATCH v8 4/6] x86/sev: Use large PSC requests if applicable |
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On Fri, May 19, 2023 at 11:30:11AM -0500, Tom Lendacky wrote: > diff --git a/arch/x86/kernel/sev.c b/arch/x86/kernel/sev.c > index 973756c89dac..8802a75e1c20 100644 > --- a/arch/x86/kernel/sev.c > +++ b/arch/x86/kernel/sev.c > @@ -657,32 +657,58 @@ static u64 __init get_jump_table_addr(void) > return ret; > } > > -static void pvalidate_pages(unsigned long vaddr, unsigned long npages, bool validate) > +static void pvalidate_pages(struct snp_psc_desc *desc) > { > - unsigned long vaddr_end; > + struct psc_entry *e; > + unsigned long vaddr; > + unsigned int size; > + unsigned int i; > + bool validate; > int rc; > > - vaddr = vaddr & PAGE_MASK; > - vaddr_end = vaddr + (npages << PAGE_SHIFT); > + for (i = 0; i <= desc->hdr.end_entry; i++) { > + e = &desc->entries[i]; > + > + vaddr = (unsigned long)pfn_to_kaddr(e->gfn); > + size = e->pagesize ? RMP_PG_SIZE_2M : RMP_PG_SIZE_4K; > + validate = (e->operation == SNP_PAGE_STATE_PRIVATE) ? true : false;
validate = e->operation == SNP_PAGE_STATE_PRIVATE;
is enough :)
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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