[S390] Remove error checking from copy_oldmem_page()
Currently it can happen that the pre-allocated ELF header contains a wrong memory map which would result in errors when copying /proc/vmcore. In order to still get a valid vmcore, we (temporarily) disable the error checking in copy_oldmem_page(). This will then produce zero pages for those memory regions. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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@ -31,7 +31,6 @@ ssize_t copy_oldmem_page(unsigned long pfn, char *buf,
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size_t csize, unsigned long offset, int userbuf)
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{
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unsigned long src;
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int rc;
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if (!csize)
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return 0;
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@ -43,11 +42,11 @@ ssize_t copy_oldmem_page(unsigned long pfn, char *buf,
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src < OLDMEM_BASE + OLDMEM_SIZE)
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src -= OLDMEM_BASE;
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if (userbuf)
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rc = copy_to_user_real((void __user *) buf, (void *) src,
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csize);
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copy_to_user_real((void __force __user *) buf, (void *) src,
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csize);
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else
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rc = memcpy_real(buf, (void *) src, csize);
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return rc < 0 ? rc : csize;
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memcpy_real(buf, (void *) src, csize);
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return csize;
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}
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/*
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