Hi Christoffer, On Wed, Jan 16, 2013 at 05:57:26PM +0000, Christoffer Dall wrote: > diff --git a/arch/arm/include/asm/pgtable-3level.h > b/arch/arm/include/asm/pgtable-3level.h > index a3f3792..6ef8afd 100644 > --- a/arch/arm/include/asm/pgtable-3level.h > +++ b/arch/arm/include/asm/pgtable-3level.h > @@ -104,11 +104,29 @@ > */ > #define L_PGD_SWAPPER (_AT(pgdval_t, 1) << 55) /* > swapper_pg_dir entry */ > > +/* > + * 2nd stage PTE definitions for LPAE. > + */ > +#define L_PTE_S2_MT_UNCACHED (_AT(pteval_t, 0x5) << 2) /* MemAttr[3:0] */ > +#define L_PTE_S2_MT_WRITETHROUGH (_AT(pteval_t, 0xa) << 2) /* MemAttr[3:0] */ > +#define L_PTE_S2_MT_WRITEBACK (_AT(pteval_t, 0xf) << 2) /* > MemAttr[3:0] */ > +#define L_PTE_S2_RDONLY (_AT(pteval_t, 1) << 6) /* HAP[1] > */ > +#define L_PTE_S2_RDWR (_AT(pteval_t, 2) << 6) /* HAP[2:1] > */
Why is this called L_PTE_S2_RDWR? The ARM ARM shows HAP[2:1] as 0b11 for read/write and 0b10 for WRONLY. > --- a/arch/arm/include/asm/pgtable.h > +++ b/arch/arm/include/asm/pgtable.h > @@ -70,6 +70,9 @@ extern void __pgd_error(const char *file, int line, pgd_t); > > extern pgprot_t pgprot_user; > extern pgprot_t pgprot_kernel; > +extern pgprot_t pgprot_hyp_device; > +extern pgprot_t pgprot_s2; > +extern pgprot_t pgprot_s2_device; > > #define _MOD_PROT(p, b) __pgprot(pgprot_val(p) | (b)) > > @@ -82,6 +85,10 @@ extern pgprot_t pgprot_kernel; > #define PAGE_READONLY_EXEC _MOD_PROT(pgprot_user, L_PTE_USER | > L_PTE_RDONLY) > #define PAGE_KERNEL _MOD_PROT(pgprot_kernel, L_PTE_XN) > #define PAGE_KERNEL_EXEC pgprot_kernel > +#define PAGE_HYP _MOD_PROT(pgprot_kernel, L_PTE_HYP) > +#define PAGE_HYP_DEVICE _MOD_PROT(pgprot_hyp_device, L_PTE_HYP) > +#define PAGE_S2 _MOD_PROT(pgprot_s2, L_PTE_S2_RDONLY) > +#define PAGE_S2_DEVICE _MOD_PROT(pgprot_s2_device, L_PTE_USER > | L_PTE_S2_RDONLY) Are these S2 read-only by default? -- Catalin -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
