REF:https://bugzilla.tianocore.org/show_bug.cgi?id=2665
ReportDispatcher() is called by a software module to report a status code.
The interface is generic and can be called frequently throughout the boot
under various conditions. A certain set of conditions can cause the
currently implemented algorithm for resource exhaustion to fail. A sample
scenario:
1. ReportStatusCode() is called at a TPL higher than one of the registered
status code listeners making the call to the listener deferred until
TPL is lowered.
2. Additional calls to ReportStatusCode() occur, so the data buffer
continues to expand.
3. A call to ReportStatusCode() is made from within a memory allocation
call (e.g. CoreAllocatePoolPages ()) which is protected from re-
entrancy with mPoolMemoryLock. This will cause the ReallocatePool()
call in ReportDispatcher() to fail. Because the end pointer was already
moved to account for the data size, the end pointer is now moved
beyond the buffer and invalid.
This commit saves the original end pointer value into a local variable
called "FailSafeEndPointer" which tracks a safe end pointer to revert to
in the case the allocated buffer size (CallbackEntry->EndPointer -
CallbackEntry->StatusCodeDataBuffer) is still not large enough for the
data.
Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Kun Qin <Kun.Qin@microsoft.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Dandan Bi <dandan.bi@intel.com>
REF:https://bugzilla.tianocore.org/show_bug.cgi?id=1562
The current SnpDxe implementation registers its ExitBootServices event
notification function (SnpNotifyExitBootServices ()) at TPL_NOTIFY. This
function calls PxeShutdown() which issues an UNDI shutdown operation.
Ultimately, this may invoke Shutdown() in EFI_SIMPLE_NETWORK_PROTOCOL.
The UEFI specification 2.8A Table 27 "TPL Restrictions" restricts the
TPL
for Simple Network Protocol to <= TPL_CALLBACK. In addition, it has been
observed in some 3rd party UNDI drivers to cause an issue further down
the call stack if the TPL is higher than TPL_CALLBACK on invocation.
Therefore, this commit changes the TPL of SnpNotifyExitBootServices() to
TPL_CALLBACK.
Cc: Siyuan Fu <siyuan.fu@intel.com>
Cc: Maciej Rabeda <maciej.rabeda@linux.intel.com>
Cc: Jiaxin Wu <jiaxin.wu@intel.com>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Maciej Rabeda <maciej.rabeda@linux.intel.com>
The ACPI specification, version 6.3, January 2019,
defines the Named Objects Encoding for FieldElements
in section '20.2.5.2 Named Objects Encoding'.
FieldElements can be one of the following:
NamedField | ReservedField | AccessField |
ExtendedAccessField | ConnectField
Some of these keywords are starting with an opcode,
allowing to identify their type.
E.g.: ReservedField := 0x00 PkgLength
This patch adds these FieldElement opcodes definitions to
the list of AML Opcode definitions.
Reviewed-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>
Reviewed-by: Zhiguang Liu <zhiguang.liu@intel.com>
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
NonDiscoverablePciDeviceDxe currently #defines the module-internal
PCI_MAX_BARS macro, with value 6 (and type "int").
Remove this private macro definition, and adopt PCI_MAX_BAR from
"MdePkg/Include/IndustryStandard/Pci22.h". Both the value and the type
remain unchanged (the standard PCI_MAX_BAR macro expands to 0x0006).
"NonDiscoverablePciDeviceIo.h" gets the definition of PCI_MAX_BAR via its
existent #include <IndustryStandard/Pci.h> directive.
Build-tested only.
Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Philippe Mathieu-Daudé <philmd@redhat.com>
Cc: Ray Ni <ray.ni@intel.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20200409113017.18233-1-lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@arm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=1548
For clang compiler, This change will make the generated image not include the
absolute file path. If so, the generated debug image can be reproduced in the
different root directory. Also, it will reduce the size of debug image size.
To do so, use __FILE_NAME__ macro to replace __FILE__. __FILE_NAME__ is
Clang-specific extension that functions similar to __FILE__ but only renders
the last path component (the filename) instead of an invocation dependent full
path to that file, and __FILE_NAME__ is introduced since clang 9.
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Signed-off-by: Zhiguang Liu <zhiguang.liu@intel.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2388
After remove Used parameter, below code in ResetTokens can also be
removed:
1. The RunningApCount parameter will be reset in GetFreeToken.
2. The ReleaseSpinLock should be called in ReleaseToken function,
Code in this function seems like a later fix if ReleaseToken not
Release it. We should remove code here and fix the real issue if
existed.
Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Today's GetFreeToken() runs at the algorithm complexity of O(n)
where n is the size of the token list.
The change introduces a new global variable FirstFreeToken and it
always points to the first free token. So the algorithm complexity
of GetFreeToken() decreases from O(n) to O(1).
The improvement matters when some SMI code uses StartupThisAP()
service for each of the AP such that the algorithm complexity
becomes O(n) * O(m) where m is the AP count.
As next steps,
1. PROCEDURE_TOKEN.Used field can be optimized out because
all tokens before FirstFreeToken should have "Used" set while all
after FirstFreeToken should have "Used" cleared.
2. ResetTokens() can be optimized to only reset tokens before
FirstFreeToken.
v2: add missing line in InitializeDataForMmMp.
v3: update copyright year to 2020.
Signed-off-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
Enable support for NVMe storage in ArmVirtQemu/QemVirtQemuKernel in order
to simplify booting/installing operating systems that don't support
virtio.
Signed-off-by: Leif Lindholm <leif@nuviainc.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2628
This patch reduces the size of IA32 binaries by ensuring that
no .debug_frame / .eh_frame sections are generated through forcing
SEH exception model, which is already the default in clang for X64.
EDK II does not support exceptions, and in future we should disable
them instead of switching to some other variant. Currently this
is not possible due to the following LLVM bugs:
https://bugs.llvm.org/show_bug.cgi?id=45324https://bugs.llvm.org/show_bug.cgi?id=45325
Upon applying this patch OvmfPkgIA32.dsc compilation in DEBUG mode
gets the following size decrease with clang 9.0.1.
Before: FV Space Information
SECFV [11%Full] 212992 total, 24512 used, 188480 free
PEIFV [22%Full] 917504 total, 203048 used, 714456 free
DXEFV [36%Full] 11534336 total, 4215672 used, 7318664 free
FVMAIN_COMPACT [37%Full] 3440640 total, 1287776 used, 2152864 free
After: FV Space Information
SECFV [10%Full] 212992 total, 22112 used, 190880 free
PEIFV [19%Full] 917504 total, 176392 used, 741112 free
DXEFV [31%Full] 11534336 total, 3657112 used, 7877224 free
FVMAIN_COMPACT [33%Full] 3440640 total, 1153896 used, 2286744 free
Cc: Liming Gao <liming.gao@intel.com>
Cc: Marvin H?user <mhaeuser@outlook.de>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Zhiguang Liu <zhiguang.liu@intel.com>
Signed-off-by: Vitaly Cheptsov <vit9696@protonmail.com>
REF:https://bugzilla.tianocore.org/show_bug.cgi?id=2062
This commit makes the behavior for PeiGetVariable() match the following
specification-defined behavior. It is now consistent with the DXE/SMM
variable driver implementation.
The UEFI specification v2.8 Errata A Section 8.2 "GetVariable()"
"Attributes" parameter description states:
"If not NULL, a pointer to the memory location to return the
attributes bitmask for the variable. See 'Related Definitions.'
If not NULL, then Attributes is set on output both when
EFI_SUCCESS and when EFI_BUFFER_TOO_SMALL is returned."
The attributes were previously only returned from the implementation
in Variable.c on EFI_SUCCESS. They are now returned on EFI_SUCCESS or
EFI_BUFFER_TOO_SMALL according to spec.
Cc: Bret Barkelew <Bret.Barkelew@microsoft.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
Reviewed-by: Guomin Jiang <guomin.jiang@intel.com>
REF:https://bugzilla.tianocore.org/show_bug.cgi?id=2062
The UEFI specification v2.8 Errata A Section 8.2 "GetVariable()"
"Attributes" parameter description states:
"If not NULL, a pointer to the memory location to return the
attributes bitmask for the variable. See 'Related Definitions.'
If not NULL, then Attributes is set on output both when
EFI_SUCCESS and when EFI_BUFFER_TOO_SMALL is returned."
The attributes were previously only returned from the implementation
in Variable.c on EFI_SUCCESS. They are now returned on EFI_SUCCESS or
EFI_BUFFER_TOO_SMALL according to spec.
Cc: Bret Barkelew <Bret.Barkelew@microsoft.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Guomin Jiang <guomin.jiang@intel.com>
Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
The local #define TT_ATTR_INDX_INVALID is used as a local error code
in the AArch64 implementation, but is misleadingly named to match the
definitions in ArmPkg/Include/Chipset/AArch64Mmu.h.
Rename it INVALID_ENTRY to reduce confusion and improve readability.
Signed-off-by: Leif Lindholm <leif@nuviainc.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@arm.com>
