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d3529a351d
Add riscv64 support Rework klibc support patches Signed-off-by: Khem Raj <raj.khem@gmail.com> Cc: Andrea Adami <andrea.adami@gmail.com>
45 lines
1.3 KiB
Diff
45 lines
1.3 KiB
Diff
From b0792ce24c28abb88835c3e0d77cfd8d24da1131 Mon Sep 17 00:00:00 2001
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From: Khem Raj <raj.khem@gmail.com>
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Date: Sat, 13 Dec 2025 12:19:14 -0800
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Subject: [PATCH 5/5] kexec: Disable memfd_create for klibc builds
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klibc doesn't provide the syscall() wrapper function needed to
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invoke the memfd_create system call. Since klibc is typically used
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for minimal early-boot environments where memfd_create is not
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essential for kexec functionality, return ENOSYS to allow kexec
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to fall back to alternative methods.
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This fixes the build error:
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error: call to undeclared function 'syscall'
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Upstream-Status: Pending
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Signed-off-by: Khem Raj <raj.khem@gmail.com>
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---
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kexec/kexec.c | 9 +++++++--
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1 file changed, 7 insertions(+), 2 deletions(-)
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diff --git a/kexec/kexec.c b/kexec/kexec.c
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index c9e4bcb..1fd2062 100644
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--- a/kexec/kexec.c
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+++ b/kexec/kexec.c
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@@ -649,11 +649,16 @@ char *slurp_decompress_file(const char *filename, off_t *r_size)
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}
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return kernel_buf;
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}
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-
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#ifndef HAVE_MEMFD_CREATE
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static int memfd_create(const char *name, unsigned int flags)
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{
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- return syscall(SYS_memfd_create, name, flags);
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+#ifdef __KLIBC__
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+/* klibc doesn't provide syscall() or memfd_create */
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+ errno = ENOSYS;
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+ return -1;
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+#else
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+ return syscall(SYS_memfd_create, name, flags);
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+#endif
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}
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#endif
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