Re: [PATCH] OvmfPkg/Bhyve: Remove Xen remnants

["Laszlo Ersek" <lersek@redhat.com>]

On 06/12/21 23:07, Rebecca Cran wrote:
> Several Xen remnants were left over from adapting the Ovmf code for
> Bhyve. Remove them.
> 
> Signed-off-by: Rebecca Cran <rebecca@bsdio.com>
> ---
>  OvmfPkg/Bhyve/AcpiPlatformDxe/AcpiPlatform.h |  7 -------
>  OvmfPkg/Bhyve/BhyveX64.dsc                   |  1 -
>  OvmfPkg/Bhyve/PlatformPei/Platform.h         | 17 -----------------
>  3 files changed, 25 deletions(-)
> 
> diff --git a/OvmfPkg/Bhyve/AcpiPlatformDxe/AcpiPlatform.h b/OvmfPkg/Bhyve/AcpiPlatformDxe/AcpiPlatform.h
> index 994ee2c7cd..87c9bdafba 100644
> --- a/OvmfPkg/Bhyve/AcpiPlatformDxe/AcpiPlatform.h
> +++ b/OvmfPkg/Bhyve/AcpiPlatformDxe/AcpiPlatform.h
> @@ -18,7 +18,6 @@
>  #include <Library/DebugLib.h>
>  #include <Library/PcdLib.h>
>  #include <Library/UefiBootServicesTableLib.h>
> -#include <Library/XenPlatformLib.h>
>  #include <IndustryStandard/Acpi.h>
>  
>  typedef struct {
> @@ -46,12 +45,6 @@ BhyveInstallAcpiTable(
>    OUT  UINTN                         *TableKey
>    );
>  
> -EFI_STATUS
> -EFIAPI
> -InstallXenTables (
> -  IN   EFI_ACPI_TABLE_PROTOCOL       *AcpiProtocol
> -  );
> -
>  EFI_STATUS
>  EFIAPI
>  InstallAcpiTables (
> diff --git a/OvmfPkg/Bhyve/BhyveX64.dsc b/OvmfPkg/Bhyve/BhyveX64.dsc
> index d8792812ab..25420d8261 100644
> --- a/OvmfPkg/Bhyve/BhyveX64.dsc
> +++ b/OvmfPkg/Bhyve/BhyveX64.dsc
> @@ -219,7 +219,6 @@
>    S3BootScriptLib|MdeModulePkg/Library/PiDxeS3BootScriptLib/DxeS3BootScriptLib.inf
>    SmbusLib|MdePkg/Library/BaseSmbusLibNull/BaseSmbusLibNull.inf
>    OrderedCollectionLib|MdePkg/Library/BaseOrderedCollectionRedBlackTreeLib/BaseOrderedCollectionRedBlackTreeLib.inf
> -  XenPlatformLib|OvmfPkg/Library/XenPlatformLib/XenPlatformLib.inf
>  
>  
>  !if $(TPM_ENABLE) == TRUE
> diff --git a/OvmfPkg/Bhyve/PlatformPei/Platform.h b/OvmfPkg/Bhyve/PlatformPei/Platform.h
> index 8239ca05ac..e0327202a5 100644
> --- a/OvmfPkg/Bhyve/PlatformPei/Platform.h
> +++ b/OvmfPkg/Bhyve/PlatformPei/Platform.h
> @@ -98,28 +98,11 @@ InstallClearCacheCallback (
>    VOID
>    );
>  
> -EFI_STATUS
> -InitializeXen (
> -  VOID
> -  );
> -
> -BOOLEAN
> -XenDetect (
> -  VOID
> -  );
> -
>  VOID
>  AmdSevInitialize (
>    VOID
>    );
>  
> -extern BOOLEAN mXen;
> -
> -VOID
> -XenPublishRamRegions (
> -  VOID
> -  );
> -
>  extern EFI_BOOT_MODE mBootMode;
>  
>  extern BOOLEAN mS3Supported;
> 

(1) If we go for simple "xen" matches in source code, this looks mostly
okay, although I see two comments that could be fixed up additionally, in
- PlatformPei/Platform.c
- SmbiosPlatformDxe/SmbiosPlatformDxe.c

(pathnames relative to OvmfPkg/Bhyve)


(2) I hinted at a larger possible cleanup in commit e43cca74ad02
("OvmfPkg/Bhyve: make "PcdPciDisableBusEnumeration" Fixed-at-Build",
2021-06-04).

If you locate "PcdPciDisableBusEnumeration" instances under
OvmfPkg/Bhyve, and substitute constant TRUE for them, a bunch of already
dead code in OvmfPkg/Bhyve/AcpiPlatformDxe is *shown dead* too, and you
can excise it.

That does not make this patch wrong, of course.

Thanks
Laszlo