From: Anup Patel <apatel@ventanamicro.com>
To: Will Deacon <will@kernel.org>,
julien.thierry.kdev@gmail.com, maz@kernel.org
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Atish Patra <atishp@atishpatra.org>,
Andrew Jones <ajones@ventanamicro.com>,
Anup Patel <anup@brainfault.org>,
kvm@vger.kernel.org, kvm-riscv@lists.infradead.org,
Anup Patel <apatel@ventanamicro.com>
Subject: [kvmtool PATCH v4 1/9] kvm tools: Add __DECLARE_FLEX_ARRAY() in include/linux/stddef.h
Date: Wed, 12 Jul 2023 22:04:53 +0530 [thread overview]
Message-ID: <20230712163501.1769737-2-apatel@ventanamicro.com> (raw)
In-Reply-To: <20230712163501.1769737-1-apatel@ventanamicro.com>
Latest x86 UAPI headers uses __DECLARE_FLEX_ARRAY() macro so let us take
this macro from Linux UAPI header and add it to include/linux/stddef.h.
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
---
include/linux/stddef.h | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/include/linux/stddef.h b/include/linux/stddef.h
index 39da808..d94e900 100644
--- a/include/linux/stddef.h
+++ b/include/linux/stddef.h
@@ -7,4 +7,20 @@
#undef offsetof
#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+/**
+ * __DECLARE_FLEX_ARRAY() - Declare a flexible array usable in a union
+ *
+ * @TYPE: The type of each flexible array element
+ * @NAME: The name of the flexible array member
+ *
+ * In order to have a flexible array member in a union or alone in a
+ * struct, it needs to be wrapped in an anonymous struct with at least 1
+ * named member, but that member can be empty.
+ */
+#define __DECLARE_FLEX_ARRAY(TYPE, NAME) \
+ struct { \
+ struct { } __empty_ ## NAME; \
+ TYPE NAME[]; \
+ }
+
#endif
--
2.34.1
next prev parent reply other threads:[~2023-07-12 16:35 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-12 16:34 [kvmtool PATCH v4 0/9] RISC-V SBI enable/disable, Zbb, Zicboz, and Ssaia support Anup Patel
2023-07-12 16:34 ` Anup Patel [this message]
2023-07-12 16:34 ` [kvmtool PATCH v4 2/9] Sync-up headers with Linux-6.4 Anup Patel
2023-07-12 16:34 ` [kvmtool PATCH v4 3/9] riscv: Allow setting custom mvendorid, marchid, and mimpid Anup Patel
2023-07-12 16:34 ` [kvmtool PATCH v4 4/9] riscv: Allow disabling SBI extensions for Guest Anup Patel
2023-07-12 16:34 ` [kvmtool PATCH v4 5/9] riscv: Sort the ISA extension array alphabetically Anup Patel
2023-07-12 16:34 ` [kvmtool PATCH v4 6/9] riscv: Add zbb extension support Anup Patel
2023-07-12 16:34 ` [kvmtool PATCH v4 7/9] riscv: Add Zicboz " Anup Patel
2023-07-12 16:35 ` [kvmtool PATCH v4 8/9] riscv: Add Ssaia " Anup Patel
2023-07-12 16:35 ` [kvmtool PATCH v4 9/9] riscv: Fix guest RAM alloc size computation for RV32 Anup Patel
2023-07-20 16:04 ` [kvmtool PATCH v4 0/9] RISC-V SBI enable/disable, Zbb, Zicboz, and Ssaia support Will Deacon
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