From 03a886252f6555d6b0af76b654e76459642b89da Mon Sep 17 00:00:00 2001
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From: Yunguo Wei <yunguo.wei@windriver.com>
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Date: Tue, 3 Dec 2013 18:12:50 +0800
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Subject: [PATCH] pmtools: switch to dynamic buffer for huge ACPI tables
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For servers like Canoe Pass or Thunder Ridge, there are much more
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entries in ACPI table, so original 1K buffer is insufficient.
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We switch to dynamic buffer on this situation.
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Signed-off-by: Yunguo Wei <yunguo.wei@windriver.com>
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Upstream-Status: Pending
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Signed-off-by: Kai Kang <kai.kang@windriver.com>
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---
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madt/madt.c | 18 +++++++++++++++++-
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1 file changed, 17 insertions(+), 1 deletion(-)
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diff --git a/madt/madt.c b/madt/madt.c
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index aed965c..8770cd5 100644
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--- a/madt/madt.c
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+++ b/madt/madt.c
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@@ -51,7 +51,9 @@ get_next_entry(acpi_table_entry_header * entry_header)
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return retval;
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}
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-u8 buffer[1024];
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+
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+u8 buf[1024];
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+u8 *buffer = buf;
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main()
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{
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@@ -75,6 +77,17 @@ main()
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if (verbose) printf("header.length %d\n", madt_header->header.length);
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+ /* if 1K buffer is insufficient for acpi table, switch to a larger memory buffer */
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+ if(expected_length > sizeof(buf)) {
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+ buffer = malloc(expected_length);
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+ if (!buffer) {
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+ perror("malloc");
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+ exit(1);
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+ }
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+ memset(buffer, 0, expected_length);
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+ memcpy(buffer, buf, sizeof(struct acpi_table_madt));
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+ }
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+
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acpi_table_print((void*)&(buffer[bytes_read]), 0);
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bytes_read = sizeof(struct acpi_table_madt);
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@@ -118,6 +131,9 @@ done:
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printf("Checksum 0x%x != 0; 0x%x in header ERROR\n", csum,
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madt_header->header.checksum);
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+ if(buffer != buf)
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+ free(buffer);
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+
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return 0;
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}
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--
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1.8.1.2
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