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| author | Chris Metcalf <cmetcalf@tilera.com> | 2010-10-14 16:23:03 -0400 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@tilera.com> | 2010-10-15 15:38:09 -0400 |
| commit | a78c942df64ef4cf495fd4d8715e48501bd7f8a4 (patch) | |
| tree | fe44212d36e6ca23dbe9f2c633824389216a3d1d /arch/tile/mm | |
| parent | bf65e440e8248f22b2eacf8d47961bb9d52260f7 (diff) | |
| download | linux-a78c942df64ef4cf495fd4d8715e48501bd7f8a4.tar.gz linux-a78c942df64ef4cf495fd4d8715e48501bd7f8a4.tar.bz2 linux-a78c942df64ef4cf495fd4d8715e48501bd7f8a4.zip | |
arch/tile: parameterize system PLs to support KVM port
While not a port to KVM (yet), this change modifies the kernel
to be able to build either at PL1 or at PL2 with a suitable
config switch. Pushing up this change avoids handling branch
merge issues going forward with the KVM work.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Diffstat (limited to 'arch/tile/mm')
| -rw-r--r-- | arch/tile/mm/fault.c | 6 | ||||
| -rw-r--r-- | arch/tile/mm/init.c | 2 |
2 files changed, 4 insertions, 4 deletions
diff --git a/arch/tile/mm/fault.c b/arch/tile/mm/fault.c index 94f579d0a494..f295b4ac941d 100644 --- a/arch/tile/mm/fault.c +++ b/arch/tile/mm/fault.c @@ -563,10 +563,10 @@ do_sigbus: /* * When we take an ITLB or DTLB fault or access violation in the * supervisor while the critical section bit is set, the hypervisor is - * reluctant to write new values into the EX_CONTEXT_1_x registers, + * reluctant to write new values into the EX_CONTEXT_K_x registers, * since that might indicate we have not yet squirreled the SPR * contents away and can thus safely take a recursive interrupt. - * Accordingly, the hypervisor passes us the PC via SYSTEM_SAVE_1_2. + * Accordingly, the hypervisor passes us the PC via SYSTEM_SAVE_K_2. * * Note that this routine is called before homecache_tlb_defer_enter(), * which means that we can properly unlock any atomics that might @@ -610,7 +610,7 @@ struct intvec_state do_page_fault_ics(struct pt_regs *regs, int fault_num, * fault. We didn't set up a kernel stack on initial entry to * sys_cmpxchg, but instead had one set up by the fault, which * (because sys_cmpxchg never releases ICS) came to us via the - * SYSTEM_SAVE_1_2 mechanism, and thus EX_CONTEXT_1_[01] are + * SYSTEM_SAVE_K_2 mechanism, and thus EX_CONTEXT_K_[01] are * still referencing the original user code. We release the * atomic lock and rewrite pt_regs so that it appears that we * came from user-space directly, and after we finish the diff --git a/arch/tile/mm/init.c b/arch/tile/mm/init.c index d89c9eacd162..78e1982cb6c9 100644 --- a/arch/tile/mm/init.c +++ b/arch/tile/mm/init.c @@ -1060,7 +1060,7 @@ void free_initmem(void) /* * Free the pages mapped from 0xc0000000 that correspond to code - * pages from 0xfd000000 that we won't use again after init. + * pages from MEM_SV_INTRPT that we won't use again after init. */ free_init_pages("unused kernel text", (unsigned long)_sinittext - text_delta, |