| Message ID | 20170622162225.26344-21-benh@kernel.crashing.org |
|---|---|
| State | Superseded |
| Headers | show |
On Thu, 2017-06-22 at 11:22 -0500, Benjamin Herrenschmidt wrote: > Uses broadcast TLBIE's to cleanup the TLB on all cores and on > the nest MMU > > Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> > --- > asm/misc.S | 41 +++++++++++++++++++++++++++++++++++++++++ > include/skiboot.h | 1 + > 2 files changed, 42 insertions(+) > > diff --git a/asm/misc.S b/asm/misc.S > index 4c9eee9..d8745c8 100644 > --- a/asm/misc.S > +++ b/asm/misc.S > @@ -63,3 +63,44 @@ cleanup_local_tlb: > bdnz 1b > ptesync > blr > + > + .global cleanup_global_tlb > +cleanup_global_tlb: > + > + /* Only supported on P9 for now */ > + mfspr %r3,SPR_PVR > + srdi %r3,%r3,16 > + cmpwi cr0,%r3,PVR_TYPE_P9 > + bnelr > + > + /* Sync out previous updates */ > + ptesync > + > + .machine "power9" > + > + /* Lead RB with IS=11 */ > + li %r3,3 > + sldi %r3,%r3,10 > + li %r0,0 > + > + /* Blow up radix partition scoped translations */ > + tlbie %r3, %r0 /* rs */, 2 /* ric */, 1 /* prs */, 1 /* r */ This is fine but breaks compiling on older bin utils and hence travis CI is blowing up. I'll repost with something backwards compatible. > + eieio > + tlbsync > + ptesync > + tlbie %r3, %r0 /* rs */, 2 /* ric */, 0 /* prs */, 1 /* r */ > + eieio > + tlbsync > + ptesync > + > + /* Blow up hash partition scoped translations */ > + tlbie %r3, %r0 /* rs */, 2 /* ric */, 1 /* prs */, 0 /* r */ > + eieio > + tlbsync > + ptesync > + tlbie %r3, %r0 /* rs */, 2 /* ric */, 0 /* prs */, 0 /* r */ > + eieio > + tlbsync > + ptesync > + > + blr > diff --git a/include/skiboot.h b/include/skiboot.h > index 87d8503..1a153b0 100644 > --- a/include/skiboot.h > +++ b/include/skiboot.h > @@ -204,6 +204,7 @@ extern void fast_reboot(void); > extern void __noreturn __secondary_cpu_entry(void); > extern void __noreturn load_and_boot_kernel(bool is_reboot); > extern void cleanup_local_tlb(void); > +extern void cleanup_global_tlb(void); > extern void init_shared_sprs(void); > extern void init_replicated_sprs(void); > extern bool start_preload_kernel(void);
diff --git a/asm/misc.S b/asm/misc.S index 4c9eee9..d8745c8 100644 --- a/asm/misc.S +++ b/asm/misc.S @@ -63,3 +63,44 @@ cleanup_local_tlb: bdnz 1b ptesync blr + + .global cleanup_global_tlb +cleanup_global_tlb: + + /* Only supported on P9 for now */ + mfspr %r3,SPR_PVR + srdi %r3,%r3,16 + cmpwi cr0,%r3,PVR_TYPE_P9 + bnelr + + /* Sync out previous updates */ + ptesync + + .machine "power9" + + /* Lead RB with IS=11 */ + li %r3,3 + sldi %r3,%r3,10 + li %r0,0 + + /* Blow up radix partition scoped translations */ + tlbie %r3, %r0 /* rs */, 2 /* ric */, 1 /* prs */, 1 /* r */ + eieio + tlbsync + ptesync + tlbie %r3, %r0 /* rs */, 2 /* ric */, 0 /* prs */, 1 /* r */ + eieio + tlbsync + ptesync + + /* Blow up hash partition scoped translations */ + tlbie %r3, %r0 /* rs */, 2 /* ric */, 1 /* prs */, 0 /* r */ + eieio + tlbsync + ptesync + tlbie %r3, %r0 /* rs */, 2 /* ric */, 0 /* prs */, 0 /* r */ + eieio + tlbsync + ptesync + + blr diff --git a/include/skiboot.h b/include/skiboot.h index 87d8503..1a153b0 100644 --- a/include/skiboot.h +++ b/include/skiboot.h @@ -204,6 +204,7 @@ extern void fast_reboot(void); extern void __noreturn __secondary_cpu_entry(void); extern void __noreturn load_and_boot_kernel(bool is_reboot); extern void cleanup_local_tlb(void); +extern void cleanup_global_tlb(void); extern void init_shared_sprs(void); extern void init_replicated_sprs(void); extern bool start_preload_kernel(void);
Uses broadcast TLBIE's to cleanup the TLB on all cores and on the nest MMU Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> --- asm/misc.S | 41 +++++++++++++++++++++++++++++++++++++++++ include/skiboot.h | 1 + 2 files changed, 42 insertions(+)