From: Yanan Wang <wangyanan55@huawei.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
Axel Rasmussen <axelrasmussen@google.com>,
Ben Gardon <bgardon@google.com>,
Andrew Jones <drjones@redhat.com>
Cc: <kvm@vger.kernel.org>, <linux-kselftest@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <yuzenghui@huawei.com>,
<wanghaibin.wang@huawei.com>, Yanan Wang <wangyanan55@huawei.com>
Subject: [PATCH] KVM: selftests: Fix compiling errors when initializing the static structure
Date: Thu, 10 Jun 2021 16:54:18 +0800 [thread overview]
Message-ID: <20210610085418.35544-1-wangyanan55@huawei.com> (raw)
Errors like below were produced from test_util.c when compiling the KVM
selftests on my local platform.
lib/test_util.c: In function 'vm_mem_backing_src_alias':
lib/test_util.c:177:12: error: initializer element is not constant
.flag = anon_flags,
^~~~~~~~~~
lib/test_util.c:177:12: note: (near initialization for 'aliases[0].flag')
The reason is that we are using non-const expressions to initialize the
static structure, which will probably trigger a compiling error/warning
on stricter GCC versions. Fix it by converting the two const variables
"anon_flags" and "anon_huge_flags" into more stable macros.
Fixes: b3784bc28ccc0 ("KVM: selftests: refactor vm_mem_backing_src_type flags")
Reported-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Yanan Wang <wangyanan55@huawei.com>
---
tools/testing/selftests/kvm/lib/test_util.c | 38 ++++++++++-----------
1 file changed, 19 insertions(+), 19 deletions(-)
diff --git a/tools/testing/selftests/kvm/lib/test_util.c b/tools/testing/selftests/kvm/lib/test_util.c
index 6ad6c8276b2e..af1031fed97f 100644
--- a/tools/testing/selftests/kvm/lib/test_util.c
+++ b/tools/testing/selftests/kvm/lib/test_util.c
@@ -166,75 +166,75 @@ size_t get_def_hugetlb_pagesz(void)
return 0;
}
+#define ANON_FLAGS (MAP_PRIVATE | MAP_ANONYMOUS)
+#define ANON_HUGE_FLAGS (ANON_FLAGS | MAP_HUGETLB)
+
const struct vm_mem_backing_src_alias *vm_mem_backing_src_alias(uint32_t i)
{
- static const int anon_flags = MAP_PRIVATE | MAP_ANONYMOUS;
- static const int anon_huge_flags = anon_flags | MAP_HUGETLB;
-
static const struct vm_mem_backing_src_alias aliases[] = {
[VM_MEM_SRC_ANONYMOUS] = {
.name = "anonymous",
- .flag = anon_flags,
+ .flag = ANON_FLAGS,
},
[VM_MEM_SRC_ANONYMOUS_THP] = {
.name = "anonymous_thp",
- .flag = anon_flags,
+ .flag = ANON_FLAGS,
},
[VM_MEM_SRC_ANONYMOUS_HUGETLB] = {
.name = "anonymous_hugetlb",
- .flag = anon_huge_flags,
+ .flag = ANON_HUGE_FLAGS,
},
[VM_MEM_SRC_ANONYMOUS_HUGETLB_16KB] = {
.name = "anonymous_hugetlb_16kb",
- .flag = anon_huge_flags | MAP_HUGE_16KB,
+ .flag = ANON_HUGE_FLAGS | MAP_HUGE_16KB,
},
[VM_MEM_SRC_ANONYMOUS_HUGETLB_64KB] = {
.name = "anonymous_hugetlb_64kb",
- .flag = anon_huge_flags | MAP_HUGE_64KB,
+ .flag = ANON_HUGE_FLAGS | MAP_HUGE_64KB,
},
[VM_MEM_SRC_ANONYMOUS_HUGETLB_512KB] = {
.name = "anonymous_hugetlb_512kb",
- .flag = anon_huge_flags | MAP_HUGE_512KB,
+ .flag = ANON_HUGE_FLAGS | MAP_HUGE_512KB,
},
[VM_MEM_SRC_ANONYMOUS_HUGETLB_1MB] = {
.name = "anonymous_hugetlb_1mb",
- .flag = anon_huge_flags | MAP_HUGE_1MB,
+ .flag = ANON_HUGE_FLAGS | MAP_HUGE_1MB,
},
[VM_MEM_SRC_ANONYMOUS_HUGETLB_2MB] = {
.name = "anonymous_hugetlb_2mb",
- .flag = anon_huge_flags | MAP_HUGE_2MB,
+ .flag = ANON_HUGE_FLAGS | MAP_HUGE_2MB,
},
[VM_MEM_SRC_ANONYMOUS_HUGETLB_8MB] = {
.name = "anonymous_hugetlb_8mb",
- .flag = anon_huge_flags | MAP_HUGE_8MB,
+ .flag = ANON_HUGE_FLAGS | MAP_HUGE_8MB,
},
[VM_MEM_SRC_ANONYMOUS_HUGETLB_16MB] = {
.name = "anonymous_hugetlb_16mb",
- .flag = anon_huge_flags | MAP_HUGE_16MB,
+ .flag = ANON_HUGE_FLAGS | MAP_HUGE_16MB,
},
[VM_MEM_SRC_ANONYMOUS_HUGETLB_32MB] = {
.name = "anonymous_hugetlb_32mb",
- .flag = anon_huge_flags | MAP_HUGE_32MB,
+ .flag = ANON_HUGE_FLAGS | MAP_HUGE_32MB,
},
[VM_MEM_SRC_ANONYMOUS_HUGETLB_256MB] = {
.name = "anonymous_hugetlb_256mb",
- .flag = anon_huge_flags | MAP_HUGE_256MB,
+ .flag = ANON_HUGE_FLAGS | MAP_HUGE_256MB,
},
[VM_MEM_SRC_ANONYMOUS_HUGETLB_512MB] = {
.name = "anonymous_hugetlb_512mb",
- .flag = anon_huge_flags | MAP_HUGE_512MB,
+ .flag = ANON_HUGE_FLAGS | MAP_HUGE_512MB,
},
[VM_MEM_SRC_ANONYMOUS_HUGETLB_1GB] = {
.name = "anonymous_hugetlb_1gb",
- .flag = anon_huge_flags | MAP_HUGE_1GB,
+ .flag = ANON_HUGE_FLAGS | MAP_HUGE_1GB,
},
[VM_MEM_SRC_ANONYMOUS_HUGETLB_2GB] = {
.name = "anonymous_hugetlb_2gb",
- .flag = anon_huge_flags | MAP_HUGE_2GB,
+ .flag = ANON_HUGE_FLAGS | MAP_HUGE_2GB,
},
[VM_MEM_SRC_ANONYMOUS_HUGETLB_16GB] = {
.name = "anonymous_hugetlb_16gb",
- .flag = anon_huge_flags | MAP_HUGE_16GB,
+ .flag = ANON_HUGE_FLAGS | MAP_HUGE_16GB,
},
[VM_MEM_SRC_SHMEM] = {
.name = "shmem",
--
2.23.0
next reply other threads:[~2021-06-10 8:54 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-10 8:54 Yanan Wang [this message]
2021-06-10 11:46 ` [PATCH] KVM: selftests: Fix compiling errors when initializing the static structure Paolo Bonzini
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