From: Xuemei Liu <liu.xuemei1@zte.com.cn>
Date: Wed, 24 Sep 2025 05:18:03 +0000 (+0800)
Subject: qemu/osdep: align memory allocations to 2M on RISC-V
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ec139c3dd00599e3e71b28c30b8207f6f15207c7;p=thirdparty%2Fqemu.git

qemu/osdep: align memory allocations to 2M on RISC-V

Similar to other architectures (e.g., x86_64, aarch64), utilizing THP on RISC-V
KVM requires 2MiB-aligned memory blocks.

Signed-off-by: Xuemei Liu <liu.xuemei1@zte.com.cn>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-ID: <20250924131803656Yqt9ZJKfevWkInaGppFdE@zte.com.cn>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---

diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h
index 1b38cb7e452..6de6c0c4e5c 100644
--- a/include/qemu/osdep.h
+++ b/include/qemu/osdep.h
@@ -561,7 +561,7 @@ int madvise(char *, size_t, int);
 
 #if defined(__linux__) && \
     (defined(__x86_64__) || defined(__arm__) || defined(__aarch64__) \
-     || defined(__powerpc64__))
+     || defined(__powerpc64__) || defined(__riscv))
    /* Use 2 MiB alignment so transparent hugepages can be used by KVM.
       Valgrind does not support alignments larger than 1 MiB,
       therefore we need special code which handles running on Valgrind. */