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accel/kvm: avoid using predefined PAGE_SIZE

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As per POSIX specification of limits.h [1], OS libc may define
PAGE_SIZE in limits.h.

PAGE_SIZE is used in included kernel uapi headers.

To prevent collosion of definition, we discard PAGE_SIZE from
defined by libc and take QEMU's variable.

[1]: https://pubs.opengroup.org/onlinepubs/7908799/xsh/limits.h.html

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Message-Id: <20210118063808.12471-8-jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Jiaxun Yang 2021-01-18 14:38:06 +08:00 committed by Thomas Huth
parent d2c4f3841d
commit eb8b1a797a
1 changed files with 3 additions and 0 deletions
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3
accel/kvm/kvm-all.c
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@ -58,6 +58,9 @@
/* KVM uses PAGE_SIZE in its definition of KVM_COALESCED_MMIO_MAX. We /* KVM uses PAGE_SIZE in its definition of KVM_COALESCED_MMIO_MAX. We
* need to use the real host PAGE_SIZE, as that's what KVM will use. * need to use the real host PAGE_SIZE, as that's what KVM will use.
*/ */
#ifdef PAGE_SIZE
#undef PAGE_SIZE
#endif
#define PAGE_SIZE qemu_real_host_page_size #define PAGE_SIZE qemu_real_host_page_size
//#define DEBUG_KVM //#define DEBUG_KVM