From: "Brijesh Singh" <brijesh.singh@amd.com>
To: James Bottomley <jejb@linux.ibm.com>, Min Xu <min.m.xu@intel.com>,
Jiewen Yao <jiewen.yao@intel.com>,
Tom Lendacky <thomas.lendacky@amd.com>,
Jordan Justen <jordan.l.justen@intel.com>,
Laszlo Ersek <lersek@redhat.com>,
Erdem Aktas <erdemaktas@google.com>,
Eric Dong <eric.dong@intel.com>, Ray Ni <ray.ni@intel.com>,
Rahul Kumar <rahul1.kumar@intel.com>,
devel@edk2.groups.io
Cc: Brijesh Singh <brijesh.singh@amd.com>,
Ard Biesheuvel <ardb+tianocore@kernel.org>
Subject: [PATCH RFC v3 19/22] OvmfPkg/MemEncryptSevLib: skip page state change for Mmio address
Date: Wed, 26 May 2021 18:11:15 -0500 [thread overview]
Message-ID: <20210526231118.12946-20-brijesh.singh@amd.com> (raw)
In-Reply-To: <20210526231118.12946-1-brijesh.singh@amd.com>
The SetMemoryEncDec() is used by the higher level routines to set or clear
the page encryption mask for system RAM and Mmio address. When SEV-SNP is
active, in addition to set/clear page mask it also updates the RMP table.
The RMP table updates are required for the system RAM address and not
the Mmio address.
Add a new parameter in SetMemoryEncDec() to tell whether the specified
address is Mmio. If its Mmio then skip the page state change in the RMP
table.
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>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
---
.../X64/PeiDxeVirtualMemory.c | 20 ++++++++++++-------
1 file changed, 13 insertions(+), 7 deletions(-)
diff --git a/OvmfPkg/Library/BaseMemEncryptSevLib/X64/PeiDxeVirtualMemory.c b/OvmfPkg/Library/BaseMemEncryptSevLib/X64/PeiDxeVirtualMemory.c
index 56db1e4b6ecf..0bb86d768017 100644
--- a/OvmfPkg/Library/BaseMemEncryptSevLib/X64/PeiDxeVirtualMemory.c
+++ b/OvmfPkg/Library/BaseMemEncryptSevLib/X64/PeiDxeVirtualMemory.c
@@ -673,6 +673,7 @@ InternalMemEncryptSevCreateIdentityMap1G (
@param[in] Mode Set or Clear mode
@param[in] CacheFlush Flush the caches before applying the
encryption mask
+ @param[in] Mmio The physical address specified is Mmio
@retval RETURN_SUCCESS The attributes were cleared for the
memory region.
@@ -688,7 +689,8 @@ SetMemoryEncDec (
IN PHYSICAL_ADDRESS PhysicalAddress,
IN UINTN Length,
IN MAP_RANGE_MODE Mode,
- IN BOOLEAN CacheFlush
+ IN BOOLEAN CacheFlush,
+ IN BOOLEAN Mmio
)
{
PAGE_MAP_AND_DIRECTORY_POINTER *PageMapLevel4Entry;
@@ -711,14 +713,15 @@ SetMemoryEncDec (
DEBUG ((
DEBUG_VERBOSE,
- "%a:%a: Cr3Base=0x%Lx Physical=0x%Lx Length=0x%Lx Mode=%a CacheFlush=%u\n",
+ "%a:%a: Cr3Base=0x%Lx Physical=0x%Lx Length=0x%Lx Mode=%a CacheFlush=%u Mmio=%u\n",
gEfiCallerBaseName,
__FUNCTION__,
Cr3BaseAddress,
PhysicalAddress,
(UINT64)Length,
(Mode == SetCBit) ? "Encrypt" : "Decrypt",
- (UINT32)CacheFlush
+ (UINT32)CacheFlush,
+ (UINT32)Mmio
));
//
@@ -760,7 +763,7 @@ SetMemoryEncDec (
//
// The InternalSetPageState() is used for setting the page state in the RMP table.
//
- if ((Mode == ClearCBit) && MemEncryptSevSnpIsEnabled ()) {
+ if (!Mmio && (Mode == ClearCBit) && MemEncryptSevSnpIsEnabled ()) {
InternalSetPageState (PhysicalAddress, EFI_SIZE_TO_PAGES (Length), SevSnpPageShared, FALSE);
}
@@ -998,7 +1001,8 @@ InternalMemEncryptSevSetMemoryDecrypted (
PhysicalAddress,
Length,
ClearCBit,
- TRUE
+ TRUE,
+ FALSE
);
}
@@ -1031,7 +1035,8 @@ InternalMemEncryptSevSetMemoryEncrypted (
PhysicalAddress,
Length,
SetCBit,
- TRUE
+ TRUE,
+ FALSE
);
}
@@ -1064,6 +1069,7 @@ InternalMemEncryptSevClearMmioPageEncMask (
PhysicalAddress,
Length,
ClearCBit,
- FALSE
+ FALSE,
+ TRUE
);
}
--
2.17.1
next prev parent reply other threads:[~2021-05-26 23:11 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-26 23:10 [RESEND PATCH RFC v3 00/22] Add AMD Secure Nested Paging (SEV-SNP) support Brijesh Singh
2021-05-26 23:10 ` [PATCH RFC v3 01/22] UefiCpuPkg: Define the SEV-SNP specific dynamic PCDs Brijesh Singh
2021-06-03 8:15 ` [edk2-devel] " Laszlo Ersek
2021-06-03 12:16 ` Brijesh Singh
2021-06-03 13:07 ` Laszlo Ersek
2021-06-03 13:38 ` Laszlo Ersek
2021-05-26 23:10 ` [PATCH RFC v3 02/22] OvmfPkg/MemEncryptSevLib: add MemEncryptSevSnpEnabled() Brijesh Singh
2021-06-04 13:43 ` Laszlo Ersek
2021-05-26 23:10 ` [PATCH RFC v3 03/22] OvmfPkg/MemEncryptSevLib: extend the workarea to include SNP enabled field Brijesh Singh
2021-06-04 14:15 ` Laszlo Ersek
2021-06-07 11:20 ` [edk2-devel] " Laszlo Ersek
2021-06-07 13:00 ` Brijesh Singh
2021-06-08 8:17 ` Laszlo Ersek
2021-06-08 13:51 ` Brijesh Singh
2021-06-08 16:42 ` Laszlo Ersek
2021-05-26 23:11 ` [PATCH RFC v3 04/22] OvmfPkg/MemEncryptSevLib: extend Es Workarea to include hv features Brijesh Singh
2021-06-07 11:54 ` [edk2-devel] " Laszlo Ersek
2021-06-07 13:37 ` Brijesh Singh
2021-06-08 8:49 ` Laszlo Ersek
2021-06-08 14:50 ` Brijesh Singh
2021-06-08 21:36 ` Lendacky, Thomas
2021-06-09 10:50 ` Laszlo Ersek
2021-05-26 23:11 ` [PATCH RFC v3 05/22] OvmfPkg: reserve Secrets page in MEMFD Brijesh Singh
2021-06-07 12:26 ` Laszlo Ersek
2021-06-07 12:48 ` Laszlo Ersek
2021-06-07 17:33 ` Brijesh Singh
2021-06-08 9:22 ` Laszlo Ersek
2021-06-07 15:58 ` Brijesh Singh
2021-06-08 9:20 ` Laszlo Ersek
2021-06-08 15:43 ` [edk2-devel] " Brijesh Singh
2021-06-08 18:01 ` Laszlo Ersek
2021-06-08 18:34 ` Brijesh Singh
2021-05-26 23:11 ` [PATCH RFC v3 06/22] OvmfPkg: reserve CPUID page for the SEV-SNP guest Brijesh Singh
2021-05-26 23:11 ` [PATCH RFC v3 07/22] OvmfPkg/ResetVector: validate the data pages used in SEC phase Brijesh Singh
2021-05-26 23:11 ` [PATCH RFC v3 08/22] OvmfPkg/ResetVector: invalidate the GHCB page Brijesh Singh
2021-05-26 23:11 ` [PATCH RFC v3 09/22] OvmfPkg: add library to support registering GHCB GPA Brijesh Singh
2021-05-26 23:11 ` [PATCH RFC v3 10/22] OvmfPkg/PlatformPei: register GHCB gpa for the SEV-SNP guest Brijesh Singh
2021-05-26 23:11 ` [PATCH RFC v3 11/22] UefiCpuPkg/MpLib: add support to register GHCB GPA when SEV-SNP is enabled Brijesh Singh
2021-05-26 23:11 ` [PATCH RFC v3 12/22] OvmfPkg/AmdSevDxe: do not use extended PCI config space Brijesh Singh
2021-05-26 23:11 ` [PATCH RFC v3 13/22] OvmfPkg/MemEncryptSevLib: add support to validate system RAM Brijesh Singh
2021-05-26 23:11 ` [PATCH RFC v3 14/22] OvmfPkg/BaseMemEncryptSevLib: skip the pre-validated " Brijesh Singh
2021-05-26 23:11 ` [PATCH RFC v3 15/22] OvmfPkg/MemEncryptSevLib: add support to validate > 4GB memory in PEI phase Brijesh Singh
2021-05-26 23:11 ` [PATCH RFC v3 16/22] OvmfPkg/SecMain: pre-validate the memory used for decompressing Fv Brijesh Singh
2021-05-26 23:11 ` [PATCH RFC v3 17/22] OvmfPkg/PlatformPei: validate the system RAM when SNP is active Brijesh Singh
2021-05-26 23:11 ` [PATCH RFC v3 18/22] OvmfPkg/MemEncryptSevLib: Change the page state in the RMP table Brijesh Singh
2021-05-26 23:11 ` Brijesh Singh [this message]
2021-05-26 23:11 ` [PATCH RFC v3 20/22] OvmfPkg/AmdSev: expose the SNP reserved pages through configuration table Brijesh Singh
2021-05-26 23:11 ` [PATCH RFC v3 21/22] UefiCpuPkg/MpInitLib: Use SEV-SNP AP Creation NAE event to launch APs Brijesh Singh
2021-05-26 23:11 ` [PATCH RFC v3 22/22] MdePkg/GHCB: increase the GHCB protocol max version Brijesh Singh
2021-06-03 13:08 ` [edk2-devel] " Laszlo Ersek
2021-06-08 1:17 ` 回复: " gaoliming
2021-05-27 9:42 ` [edk2-devel] [RESEND PATCH RFC v3 00/22] Add AMD Secure Nested Paging (SEV-SNP) support Laszlo Ersek
2021-06-02 17:09 ` Laszlo Ersek
2021-06-04 9:32 ` Laszlo Ersek
2021-06-04 11:50 ` Brijesh Singh
2021-06-04 13:09 ` Laszlo Ersek
2021-06-07 12:04 ` Laszlo Ersek
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