diff options
| author | David Daney <david.daney@cavium.com> | 2014-05-28 23:52:13 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2014-06-02 12:34:20 +0200 |
| commit | 18280edafef1b8ffc920743eddaf6cf6612b1509 (patch) | |
| tree | 42136302ac56fb113d16de3128becd1fc6aed7a6 /arch/mips/include/asm/mach-paravirt/cpu-feature-overrides.h | |
| parent | 90dfdc7ceb577c0d7b7635def3c62039a091e50d (diff) | |
MIPS: Add code for new system 'paravirt'
For para-virtualized guests running under KVM or other equivalent
hypervisor.
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Andreas Herrmann <andreas.herrmann@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Cc: James Hogan <james.hogan@imgtec.com>
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/7004/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include/asm/mach-paravirt/cpu-feature-overrides.h')
| -rw-r--r-- | arch/mips/include/asm/mach-paravirt/cpu-feature-overrides.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/mips/include/asm/mach-paravirt/cpu-feature-overrides.h b/arch/mips/include/asm/mach-paravirt/cpu-feature-overrides.h new file mode 100644 index 000000000000..725e1ed83f6a --- /dev/null +++ b/arch/mips/include/asm/mach-paravirt/cpu-feature-overrides.h @@ -0,0 +1,36 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2013 Cavium, Inc. + */ +#ifndef __ASM_MACH_PARAVIRT_CPU_FEATURE_OVERRIDES_H +#define __ASM_MACH_PARAVIRT_CPU_FEATURE_OVERRIDES_H + +#define cpu_has_4kex 1 +#define cpu_has_3k_cache 0 +#define cpu_has_tx39_cache 0 +#define cpu_has_counter 1 +#define cpu_has_llsc 1 +/* + * We Disable LL/SC on non SMP systems as it is faster to disable + * interrupts for atomic access than a LL/SC. + */ +#ifdef CONFIG_SMP +# define kernel_uses_llsc 1 +#else +# define kernel_uses_llsc 0 +#endif + +#ifdef CONFIG_CPU_CAVIUM_OCTEON +#define cpu_dcache_line_size() 128 +#define cpu_icache_line_size() 128 +#define cpu_has_octeon_cache 1 +#define cpu_has_4k_cache 0 +#else +#define cpu_has_octeon_cache 0 +#define cpu_has_4k_cache 1 +#endif + +#endif /* __ASM_MACH_PARAVIRT_CPU_FEATURE_OVERRIDES_H */ |