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| author | Peter Maydell <peter.maydell@linaro.org> | 2013-11-22 17:17:08 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2013-12-10 13:28:29 +0000 |
| commit | 72b0cd35ad3e216a1db7f6a08a2ff65bb577c119 (patch) | |
| tree | 817aa988e4dbb4fb02bf805d605fd4d2d5a42c09 /target-arm/kvm-consts.h | |
| parent | 57e72f2a1977448959fe4a492bc48cd2988c1f3b (diff) | |
| download | qemu-72b0cd35ad3e216a1db7f6a08a2ff65bb577c119.tar.gz | |
target-arm: Provide mechanism for getting KVM constants even if not CONFIG_KVM
There are a number of places where it would be convenient for ARM
code to have working definitions of KVM constants even in code
which is compiled with CONFIG_KVM not set. In this situation we
can't simply include the kernel KVM headers (which might conflict
with host header definitions or not even compile on the compiler
we're using) so we have to redefine equivalent constants.
Provide a mechanism for doing this and checking that the values
match, and use it for the constants we're currently exposing
via an ad-hoc mechanism.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Message-id: 1385140638-10444-2-git-send-email-peter.maydell@linaro.org
Diffstat (limited to 'target-arm/kvm-consts.h')
| -rw-r--r-- | target-arm/kvm-consts.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/target-arm/kvm-consts.h b/target-arm/kvm-consts.h new file mode 100644 index 0000000000..6f56f726d3 --- /dev/null +++ b/target-arm/kvm-consts.h @@ -0,0 +1,41 @@ +/* + * KVM ARM ABI constant definitions + * + * Copyright (c) 2013 Linaro Limited + * + * Provide versions of KVM constant defines that can be used even + * when CONFIG_KVM is not set and we don't have access to the + * KVM headers. If CONFIG_KVM is set, we do a compile-time check + * that we haven't got out of sync somehow. + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ +#ifndef ARM_KVM_CONSTS_H +#define ARM_KVM_CONSTS_H + +#ifdef CONFIG_KVM +#include "qemu/compiler.h" +#include <linux/kvm.h> + +#define MISMATCH_CHECK(X, Y) QEMU_BUILD_BUG_ON(X != Y) + +#else +#define MISMATCH_CHECK(X, Y) +#endif + +#define CP_REG_SIZE_SHIFT 52 +#define CP_REG_SIZE_MASK 0x00f0000000000000ULL +#define CP_REG_SIZE_U32 0x0020000000000000ULL +#define CP_REG_SIZE_U64 0x0030000000000000ULL +#define CP_REG_ARM 0x4000000000000000ULL + +MISMATCH_CHECK(CP_REG_SIZE_SHIFT, KVM_REG_SIZE_SHIFT) +MISMATCH_CHECK(CP_REG_SIZE_MASK, KVM_REG_SIZE_MASK) +MISMATCH_CHECK(CP_REG_SIZE_U32, KVM_REG_SIZE_U32) +MISMATCH_CHECK(CP_REG_SIZE_U64, KVM_REG_SIZE_U64) +MISMATCH_CHECK(CP_REG_ARM, KVM_REG_ARM) + +#undef MISMATCH_CHECK + +#endif |