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| author | Brijesh Singh <brijesh.singh@amd.com> | 2021-05-19 13:19:49 -0500 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2021-05-29 12:15:21 +0000 |
| commit | adfa3327d4fc25d5eff5fedcdb11ecde52a995cc (patch) | |
| tree | b976c3a1a3c1dbc31c2de3eee5d3e06bde68658a /OvmfPkg/Include/Library | |
| parent | b4a8de5d27cdad6fc2dad01770d9bde372d87f7e (diff) | |
| download | edk2-adfa3327d4fc25d5eff5fedcdb11ecde52a995cc.tar.gz | |
OvmfPkg/BaseMemEncryptSevLib: remove Flush parameter
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 <jejb@linux.ibm.com>
Cc: Min Xu <min.m.xu@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Message-Id: <20210519181949.6574-14-brijesh.singh@amd.com>
Diffstat (limited to 'OvmfPkg/Include/Library')
| -rw-r--r-- | OvmfPkg/Include/Library/MemEncryptSevLib.h | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/OvmfPkg/Include/Library/MemEncryptSevLib.h b/OvmfPkg/Include/Library/MemEncryptSevLib.h index b91490d5d4..76d06c206c 100644 --- a/OvmfPkg/Include/Library/MemEncryptSevLib.h +++ b/OvmfPkg/Include/Library/MemEncryptSevLib.h @@ -100,8 +100,6 @@ MemEncryptSevIsEnabled ( address of a memory region.
@param[in] NumPages The number of pages from start memory
region.
- @param[in] Flush Flush the caches before clearing the bit
- (mostly TRUE except MMIO addresses)
@retval RETURN_SUCCESS The attributes were cleared for the
memory region.
@@ -114,8 +112,7 @@ EFIAPI MemEncryptSevClearPageEncMask (
IN PHYSICAL_ADDRESS Cr3BaseAddress,
IN PHYSICAL_ADDRESS BaseAddress,
- IN UINTN NumPages,
- IN BOOLEAN Flush
+ IN UINTN NumPages
);
/**
@@ -128,8 +125,6 @@ MemEncryptSevClearPageEncMask ( address of a memory region.
@param[in] NumPages The number of pages from start memory
region.
- @param[in] Flush Flush the caches before setting the bit
- (mostly TRUE except MMIO addresses)
@retval RETURN_SUCCESS The attributes were set for the memory
region.
@@ -142,8 +137,7 @@ EFIAPI MemEncryptSevSetPageEncMask (
IN PHYSICAL_ADDRESS Cr3BaseAddress,
IN PHYSICAL_ADDRESS BaseAddress,
- IN UINTN NumPages,
- IN BOOLEAN Flush
+ IN UINTN NumPages
);
|