diff options
| author | Chris Metcalf <cmetcalf@tilera.com> | 2010-10-15 00:23:03 +0400 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@tilera.com> | 2010-10-15 23:38:09 +0400 |
| commit | a78c942df64ef4cf495fd4d8715e48501bd7f8a4 (patch) | |
| tree | fe44212d36e6ca23dbe9f2c633824389216a3d1d /arch/tile/include/asm/processor.h | |
| parent | bf65e440e8248f22b2eacf8d47961bb9d52260f7 (diff) | |
| download | linux-a78c942df64ef4cf495fd4d8715e48501bd7f8a4.tar.xz | |
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/include/asm/processor.h')
| -rw-r--r-- | arch/tile/include/asm/processor.h | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/arch/tile/include/asm/processor.h b/arch/tile/include/asm/processor.h index ccd5f8425688..1747ff3946b2 100644 --- a/arch/tile/include/asm/processor.h +++ b/arch/tile/include/asm/processor.h @@ -328,18 +328,21 @@ extern int kdata_huge; * Note that assembly code assumes that USER_PL is zero. */ #define USER_PL 0 -#define KERNEL_PL 1 +#if CONFIG_KERNEL_PL == 2 +#define GUEST_PL 1 +#endif +#define KERNEL_PL CONFIG_KERNEL_PL -/* SYSTEM_SAVE_1_0 holds the current cpu number ORed with ksp0. */ +/* SYSTEM_SAVE_K_0 holds the current cpu number ORed with ksp0. */ #define CPU_LOG_MASK_VALUE 12 #define CPU_MASK_VALUE ((1 << CPU_LOG_MASK_VALUE) - 1) #if CONFIG_NR_CPUS > CPU_MASK_VALUE # error Too many cpus! #endif #define raw_smp_processor_id() \ - ((int)__insn_mfspr(SPR_SYSTEM_SAVE_1_0) & CPU_MASK_VALUE) + ((int)__insn_mfspr(SPR_SYSTEM_SAVE_K_0) & CPU_MASK_VALUE) #define get_current_ksp0() \ - (__insn_mfspr(SPR_SYSTEM_SAVE_1_0) & ~CPU_MASK_VALUE) + (__insn_mfspr(SPR_SYSTEM_SAVE_K_0) & ~CPU_MASK_VALUE) #define next_current_ksp0(task) ({ \ unsigned long __ksp0 = task_ksp0(task); \ int __cpu = raw_smp_processor_id(); \ |