Tianocore/edk2.git/OvmfPkg/Library/BaseMemEncryptSevLib/X64/MemEncryptSevLib.c, branch master

OvmfPkg: Apply uncrustify changes

2021-12-07T17:24:28+00:00

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737 Apply uncrustify changes to .c/.h files in the OvmfPkg package Cc: Andrew Fish Cc: Leif Lindholm Cc: Michael D Kinney Signed-off-by: Michael Kubacki Reviewed-by: Andrew Fish

OvmfPkg/BaseMemEncryptSevLib: remove Flush parameter

2021-05-29T12:15:21+00:00

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3275 The Flush parameter is used to provide a hint whether the specified range is Mmio address. Now that we have a dedicated helper to clear the memory encryption mask for the Mmio address range, its safe to remove the Flush parameter from MemEncryptSev{Set,Clear}PageEncMask(). Since the address specified in the MemEncryptSev{Set,Clear}PageEncMask() points to a system RAM, thus a cache flush is required during the encryption mask update. Cc: James Bottomley Cc: Min Xu Cc: Jiewen Yao Cc: Tom Lendacky Cc: Jordan Justen Cc: Ard Biesheuvel Cc: Laszlo Ersek Cc: Erdem Aktas Reviewed-by: Laszlo Ersek Signed-off-by: Brijesh Singh Message-Id: <20210519181949.6574-14-brijesh.singh@amd.com>

OvmfPkg/BaseMemEncryptSevLib: introduce MemEncryptSevClearMmioPageEncMask()

2021-05-29T12:15:21+00:00

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3275 The MemEncryptSevClearMmioPageEncMask() helper can be used for clearing the memory encryption mask for the Mmio region. The MemEncryptSevClearMmioPageEncMask() is a simplified version of MemEncryptSevClearPageEncMask() -- it does not flush the caches after clearing the page encryption mask. Cc: James Bottomley Cc: Min Xu Cc: Jiewen Yao Cc: Tom Lendacky Cc: Jordan Justen Cc: Ard Biesheuvel Cc: Laszlo Ersek Cc: Erdem Aktas Reviewed-by: Laszlo Ersek Signed-off-by: Brijesh Singh Message-Id: <20210519181949.6574-10-brijesh.singh@amd.com>

OvmfPkg/MemEncryptSevLib: Address range encryption state interface

2021-01-07T19:34:39+00:00

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3108 Update the MemEncryptSevLib library to include an interface that can report the encryption state on a range of memory. The values will represent the range as being unencrypted, encrypted, a mix of unencrypted and encrypted, and error (e.g. ranges that aren't mapped). Cc: Jordan Justen Cc: Laszlo Ersek Cc: Ard Biesheuvel Cc: Brijesh Singh Acked-by: Laszlo Ersek Signed-off-by: Tom Lendacky Message-Id: <0d98f4d42a2b67310c29bac7bcdcf1eda6835847.1610045305.git.thomas.lendacky@amd.com>

OvmfPkg: Replace BSD License with BSD+Patent License

2019-04-09T17:58:19+00:00

https://bugzilla.tianocore.org/show_bug.cgi?id=1373 Replace BSD 2-Clause License with BSD+Patent License. This change is based on the following emails: https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html RFCs with detailed process for the license change: V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney Reviewed-by: Laszlo Ersek

OvmfPkg/MemEncryptSevLib: sort #includes, and entries in INF file sections

2018-03-06T12:30:10+00:00

Cc: Ard Biesheuvel Cc: Brijesh Singh Cc: Jordan Justen Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Laszlo Ersek Tested-by: Brijesh Singh Reviewed-by: Brijesh Singh

OvmfPkg/MemEncryptSevLib: clean up MemEncryptSevSetPageEncMask() decl

2018-03-06T12:30:03+00:00

The declaration and the definition(s) of the function should have identical leading comments and/or identical parameter lists. Replace any leftover "clear" references to the C-bit with "set" references. Also remove any excess space in the comment block, and unindent the trailing "**/" if necessary. Correct several parameter references. Cc: Ard Biesheuvel Cc: Brijesh Singh Cc: Jordan Justen Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Laszlo Ersek Tested-by: Brijesh Singh Reviewed-by: Brijesh Singh

OvmfPkg/MemEncryptSevLib: clean up MemEncryptSevClearPageEncMask() decl

2018-03-06T12:30:01+00:00

The declaration and the definition(s) of the function should have identical leading comments and/or identical parameter lists. Also remove any excess space in the comment block, and unindent the trailing "**/" if necessary. Correct several parameter references. Cc: Ard Biesheuvel Cc: Brijesh Singh Cc: Jordan Justen Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Laszlo Ersek Tested-by: Brijesh Singh Reviewed-by: Brijesh Singh

OvmfPkg/MemEncryptSevLib: rewrap to 79 characters width

2018-03-06T12:29:37+00:00

There are many overlong lines; it's hard to work with the library like this. Rewrap all files to 79 columns. Cc: Ard Biesheuvel Cc: Brijesh Singh Cc: Jordan Justen Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Laszlo Ersek Tested-by: Brijesh Singh Reviewed-by: Brijesh Singh

OvmfPkg/BaseMemcryptSevLib: Add SEV helper library

2017-07-11T04:17:27+00:00

Add Secure Encrypted Virtualization (SEV) helper library. The library provides the routines to: - set or clear memory encryption bit for a given memory region. - query whether SEV is enabled. Cc: Jordan Justen Cc: Laszlo Ersek Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Brijesh Singh Reviewed-by: Laszlo Ersek Acked-by: Jordan Justen