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

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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>
This commit is contained in:
Xuemei Liu 2025-09-24 13:18:03 +08:00 • committed by Alistair Francis
parent cebaf7434b
commit ec139c3dd0
1 changed files with 1 additions and 1 deletions
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2
include/qemu/osdep.h
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@ -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. */