[qemu-xen staging] ACPI: Assert that we don't run out of the preallocated memory

[patchbot@xxxxxxx]

commit 4bf7c0cb09a59314aca261291e3a20a24c7dd3b3
Author:     Dongjiu Geng <gengdongjiu@xxxxxxxxxx>
AuthorDate: Mon Jul 27 16:12:10 2020 +0100
Commit:     Peter Maydell <peter.maydell@xxxxxxxxxx>
CommitDate: Mon Jul 27 16:12:10 2020 +0100

    ACPI: Assert that we don't run out of the preallocated memory
    
    data_length is a constant value, so we use assert instead of
    condition check.
    
    Signed-off-by: Dongjiu Geng <gengdongjiu@xxxxxxxxxx>
    Message-id: 20200622113146.33421-1-gengdongjiu@xxxxxxxxxx
    Reviewed-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
    Signed-off-by: Peter Maydell <peter.maydell@xxxxxxxxxx>
---
 hw/acpi/ghes.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/hw/acpi/ghes.c b/hw/acpi/ghes.c
index b363bc331d..f0ee9f51ca 100644
--- a/hw/acpi/ghes.c
+++ b/hw/acpi/ghes.c
@@ -204,16 +204,12 @@ static int acpi_ghes_record_mem_error(uint64_t 
error_block_address,
 
     /* This is the length if adding a new generic error data entry*/
     data_length = ACPI_GHES_DATA_LENGTH + ACPI_GHES_MEM_CPER_LENGTH;
-
     /*
-     * Check whether it will run out of the preallocated memory if adding a new
-     * generic error data entry
+     * It should not run out of the preallocated memory if adding a new generic
+     * error data entry
      */
-    if ((data_length + ACPI_GHES_GESB_SIZE) > ACPI_GHES_MAX_RAW_DATA_LENGTH) {
-        error_report("Not enough memory to record new CPER!!!");
-        g_array_free(block, true);
-        return -1;
-    }
+    assert((data_length + ACPI_GHES_GESB_SIZE) <=
+            ACPI_GHES_MAX_RAW_DATA_LENGTH);
 
     /* Build the new generic error status block header */
     acpi_ghes_generic_error_status(block, ACPI_GEBS_UNCORRECTABLE,
--
generated by git-patchbot for /home/xen/git/qemu-xen.git#staging