diff options
| author |   Claudio Carvalho <cclaudio@linux.ibm.com> | 2019-08-22 00:48:36 -0300 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2019-08-30 09:40:16 +1000 |
| commit | 5223134029a87db925ecc9449f9501bad391a52e (patch) | |
| tree | 7dcd197f295a1ed6f08a824ed5144d91ca7f8f6b /arch/powerpc/mm/book3s64/pgtable.c | |
| parent | powerpc/mm: Use UV_WRITE_PATE ucall to register a PATE (diff) | |
| download | linux-dev-5223134029a87db925ecc9449f9501bad391a52e.tar.xz linux-dev-5223134029a87db925ecc9449f9501bad391a52e.zip | |
powerpc/mm: Write to PTCR only if ultravisor disabled
In ultravisor enabled systems, PTCR becomes ultravisor privileged only
for writing and an attempt to write to it will cause a Hypervisor
Emulation Assitance interrupt.
This patch uses the set_ptcr_when_no_uv() function to restrict PTCR
writing to only when ultravisor is disabled.
Signed-off-by: Claudio Carvalho <cclaudio@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190822034838.27876-6-cclaudio@linux.ibm.com
Diffstat (limited to 'arch/powerpc/mm/book3s64/pgtable.c')
| -rw-r--r-- | arch/powerpc/mm/book3s64/pgtable.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/mm/book3s64/pgtable.c b/arch/powerpc/mm/book3s64/pgtable.c index 4173f6931009..01a7570c10e0 100644 --- a/arch/powerpc/mm/book3s64/pgtable.c +++ b/arch/powerpc/mm/book3s64/pgtable.c @@ -207,7 +207,7 @@ void __init mmu_partition_table_init(void) * 64 K size. */ ptcr = __pa(partition_tb) | (PATB_SIZE_SHIFT - 12); - mtspr(SPRN_PTCR, ptcr); + set_ptcr_when_no_uv(ptcr); powernv_set_nmmu_ptcr(ptcr); } |