diff options
| author |   Ganesh Goudar <ganeshgr@linux.ibm.com> | 2020-11-30 14:00:57 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2020-12-04 01:01:34 +1100 |
| commit | 3ba150fb21207e4a7f4b600eb2dbbe83f94571fe (patch) | |
| tree | d0cdb16eb2be1dc27ef6f470005f1133e872c512 /arch/powerpc/include/asm/book3s/64 | |
| parent | powernv/pci: Print an error when device enable is blocked (diff) | |
| download | linux-dev-3ba150fb21207e4a7f4b600eb2dbbe83f94571fe.tar.xz linux-dev-3ba150fb21207e4a7f4b600eb2dbbe83f94571fe.zip | |
lkdtm/powerpc: Add SLB multihit test
To check machine check handling, add support to inject slb
multihit errors.
Co-developed-by: Mahesh Salgaonkar <mahesh@linux.ibm.com>
Signed-off-by: Mahesh Salgaonkar <mahesh@linux.ibm.com>
Signed-off-by: Ganesh Goudar <ganeshgr@linux.ibm.com>
[mpe: Use CONFIG_PPC_BOOK3S_64 to fix compile errors reported by lkp@intel.com]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201130083057.135610-1-ganeshgr@linux.ibm.com
Diffstat (limited to 'arch/powerpc/include/asm/book3s/64')
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/mmu-hash.h | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/mmu-hash.h b/arch/powerpc/include/asm/book3s/64/mmu-hash.h index 9192cb05a6ab..066b1d34c7bc 100644 --- a/arch/powerpc/include/asm/book3s/64/mmu-hash.h +++ b/arch/powerpc/include/asm/book3s/64/mmu-hash.h @@ -843,6 +843,32 @@ static inline unsigned long get_kernel_vsid(unsigned long ea, int ssize) unsigned htab_shift_for_mem_size(unsigned long mem_size); -#endif /* __ASSEMBLY__ */ +enum slb_index { + LINEAR_INDEX = 0, /* Kernel linear map (0xc000000000000000) */ + KSTACK_INDEX = 1, /* Kernel stack map */ +}; +#define slb_esid_mask(ssize) \ + (((ssize) == MMU_SEGSIZE_256M) ? ESID_MASK : ESID_MASK_1T) + +static inline unsigned long mk_esid_data(unsigned long ea, int ssize, + enum slb_index index) +{ + return (ea & slb_esid_mask(ssize)) | SLB_ESID_V | index; +} + +static inline unsigned long __mk_vsid_data(unsigned long vsid, int ssize, + unsigned long flags) +{ + return (vsid << slb_vsid_shift(ssize)) | flags | + ((unsigned long)ssize << SLB_VSID_SSIZE_SHIFT); +} + +static inline unsigned long mk_vsid_data(unsigned long ea, int ssize, + unsigned long flags) +{ + return __mk_vsid_data(get_kernel_vsid(ea, ssize), ssize, flags); +} + +#endif /* __ASSEMBLY__ */ #endif /* _ASM_POWERPC_BOOK3S_64_MMU_HASH_H_ */ |