Re: [Qemu-devel] [Qemu-ppc] [QEMU-PPC] [PATCH V3 03/10] target/ppc/POWER9: Adapt LPCR handling for POWER9

[Suraj Jitindar Singh <sjitindarsingh@gmail.com>]

On Thu, 2017-02-23 at 14:47 +1100, David Gibson wrote:
> On Mon, Feb 20, 2017 at 06:31:46PM +1100, Balbir Singh wrote:
> > 
> > On Mon, Feb 20, 2017 at 03:04:31PM +1100, Suraj Jitindar Singh
> > wrote:
> > > 
> > > The logical partitioning control register controls a threads
> > > operation
> > > based on the partition it is currently executing. Add new
> > > definitions and
> > > update the mask used when writing to the LPCR based on the POWER9
> > > spec.
> > > 
> > > Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
> > > ---
> > >  target/ppc/cpu.h            | 18 ++++++++++++++++++
> > >  target/ppc/mmu-hash64.c     |  8 ++++++++
> > >  target/ppc/translate_init.c | 24 ++++++++++++++++++------
> > >  3 files changed, 44 insertions(+), 6 deletions(-)
> > > 
> > > diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h
> > > index bb96dd5..425e79d 100644
> > > --- a/target/ppc/cpu.h
> > > +++ b/target/ppc/cpu.h
> > > @@ -384,12 +384,19 @@ struct ppc_slb_t {
> > >  #define LPCR_DPFD         (0x7ull << LPCR_DPFD_SHIFT)
> > >  #define LPCR_VRMASD_SHIFT (63 - 16)
> > >  #define LPCR_VRMASD       (0x1full << LPCR_VRMASD_SHIFT)
> > > +/* P9: Power-saving mode Exit Cause Enable (Upper Section) Mask
> > > */
> > > +#define LPCR_PECE_U_SHIFT (63 - 19)
> > > +#define LPCR_PECE_U_MASK  (0x7ull << LPCR_PECE_U_SHIFT)
> > > +#define LPCR_HVEE         (1ull << (63 - 17)) /* Hypervisor Virt
> > > Exit Enable */
> > >  #define LPCR_RMLS_SHIFT   (63 - 37)
> > >  #define LPCR_RMLS         (0xfull << LPCR_RMLS_SHIFT)
> > >  #define LPCR_ILE          (1ull << (63 - 38))
> > >  #define LPCR_AIL_SHIFT    (63 - 40)      /* Alternate interrupt
> > > location */
> > >  #define LPCR_AIL          (3ull << LPCR_AIL_SHIFT)
> > > +#define LPCR_UPRT         (1ull << (63 - 41)) /* Use Process
> > > Table */
> > > +#define LPCR_EVIRT        (1ull << (63 - 42)) /* Enhanced
> > > Virtualisation */
> > >  #define LPCR_ONL          (1ull << (63 - 45))
> > > +#define LPCR_LD           (1ull << (63 - 46)) /* Large
> > > Decrementer */
> > >  #define LPCR_P7_PECE0     (1ull << (63 - 49))
> > >  #define LPCR_P7_PECE1     (1ull << (63 - 50))
> > >  #define LPCR_P7_PECE2     (1ull << (63 - 51))
> > > @@ -398,11 +405,22 @@ struct ppc_slb_t {
> > >  #define LPCR_P8_PECE2     (1ull << (63 - 49))
> > >  #define LPCR_P8_PECE3     (1ull << (63 - 50))
> > >  #define LPCR_P8_PECE4     (1ull << (63 - 51))
> > > +/* P9: Power-saving mode Exit Cause Enable (Lower Section) Mask
> > > */
> > > +#define LPCR_PECE_L_SHIFT (63 - 51)
> > > +#define LPCR_PECE_L_MASK  (0x1full << LPCR_PECE_L_SHIFT)
> > > +#define LPCR_PDEE         (1ull << (63 - 47)) /* Privileged
> > > Doorbell Exit EN */
> > > +#define LPCR_HDEE         (1ull << (63 - 48)) /* Hyperv Doorbell
> > > Exit Enable */
> > > +#define LPCR_EEE          (1ull << (63 - 49)) /* External Exit
> > > Enable        */
> > > +#define LPCR_DEE          (1ull << (63 - 50)) /* Decrementer
> > > Exit Enable     */
> > > +#define LPCR_OEE          (1ull << (63 - 51)) /* Other Exit
> > > Enable           */
> > >  #define LPCR_MER          (1ull << (63 - 52))
> > > +#define LPCR_GTSE         (1ull << (63 - 53)) /* Guest
> > > Translation Shootdown */
> > >  #define LPCR_TC           (1ull << (63 - 54))
> > > +#define LPCR_HEIC         (1ull << (63 - 59)) /* HV Extern
> > > Interrupt Control */
> > >  #define LPCR_LPES0        (1ull << (63 - 60))
> > >  #define LPCR_LPES1        (1ull << (63 - 61))
> > >  #define LPCR_RMI          (1ull << (63 - 62))
> > > +#define LPCR_HVICE        (1ull << (63 - 62)) /* HV
> > > Virtualisation Int Enable */
> > >  #define LPCR_HDICE        (1ull << (63 - 63))
> > This patch is missing
> > 
> > #define LPCR_HR	(1ull << (63 - 43))	/* HV uses Radix
> > Tree Translation */
> > 
> > See arch/powerpc/include/asm/reg.h in the Linux kernel. 
> Suraj, if you're resending anyway, add this.  It doesn't matter for
> non-powernv, of course, but we might as well put the #define in to
> document it.
> 

Yeah adding a define can't hurt