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On output, the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.Configuration() function produces a pointer to a buffer of ACPI 2.0 resource descriptors: Resources A pointer to the ACPI 2.0 resource descriptors that describe the current configuration of this PCI root bridge. The storage for the ACPI 2.0 resource descriptors is allocated by this function. The caller must treat the return buffer as read-only data, and the buffer must not be freed by the caller. PciHostBridgeDxe currently provides this buffer in a structure with static storage duration. If multiple root bridges existed in parallel, the pointers returned by their Configuration() methods would point to the same static storage. A later Configuration() call would overwrite the storage pointed out by an earlier Configuration() call (which was possibly made for a different, but still alive, root bridge.) Fix this problem by embedding the configuration buffer in PCI_ROOT_BRIDGE_INSTANCE. While we're at it, correct some typos (Desp -> Desc), spell out a missing pack(1) pragma, and improve formatting. Cc: Jordan Justen <jordan.l.justen@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Regression-tested-by: Gabriel Somlo <somlo@cmu.edu> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17960 6f19259b-4bc3-4df7-8a09-765794883524
Description
Acidanthera UEFI Development Kit based on EDK II edk2-stable202405
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