From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
To: Peter Zijlstra <peterz@infradead.org>,
Andy Lutomirski <luto@kernel.org>,
Dave Hansen <dave.hansen@intel.com>,
Tony Luck <tony.luck@intel.com>,
Dan Williams <dan.j.williams@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>,
Kirill Shutemov <kirill.shutemov@linux.intel.com>,
Kuppuswamy Sathyanarayanan <knsathya@kernel.org>,
Raj Ashok <ashok.raj@intel.com>,
Sean Christopherson <seanjc@google.com>,
Kuppuswamy Sathyanarayanan
<sathyanarayanan.kuppuswamy@linux.intel.com>,
linux-kernel@vger.kernel.org
Subject: [RFC v2-fix-v1 3/3] x86/tdx: Handle port I/O
Date: Wed, 26 May 2021 21:23:56 -0700 [thread overview]
Message-ID: <20210527042356.3983284-4-sathyanarayanan.kuppuswamy@linux.intel.com> (raw)
In-Reply-To: <20210527042356.3983284-1-sathyanarayanan.kuppuswamy@linux.intel.com>
From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
TDX hypervisors cannot emulate instructions directly. This
includes port IO which is normally emulated in the hypervisor.
All port IO instructions inside TDX trigger the #VE exception
in the guest and would be normally emulated there.
For the really early code in the decompressor, #VE cannot be
used because the IDT needed for handling the exception is not
set-up, and some other infrastructure needed by the handler
is missing. So to support port IO in decompressor code, add
support for paravirt based I/O port virtualization.
Also string I/O is not supported in TDX guest. So, unroll the
string I/O operation into a loop operating on one element at
a time. This method is similar to AMD SEV, so just extend the
support for TDX guest platform.
Co-developed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
---
arch/x86/boot/compressed/Makefile | 1 +
arch/x86/boot/compressed/tdcall.S | 3 ++
arch/x86/boot/compressed/tdx.c | 28 ++++++++++++++++++
arch/x86/include/asm/io.h | 7 +++--
arch/x86/include/asm/tdx.h | 47 ++++++++++++++++++++++++++++++-
arch/x86/kernel/tdx.c | 39 +++++++++++++++++++++++++
6 files changed, 122 insertions(+), 3 deletions(-)
create mode 100644 arch/x86/boot/compressed/tdcall.S
diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
index a2554621cefe..a944a2038797 100644
--- a/arch/x86/boot/compressed/Makefile
+++ b/arch/x86/boot/compressed/Makefile
@@ -97,6 +97,7 @@ endif
vmlinux-objs-$(CONFIG_ACPI) += $(obj)/acpi.o
vmlinux-objs-$(CONFIG_INTEL_TDX_GUEST) += $(obj)/tdx.o
+vmlinux-objs-$(CONFIG_INTEL_TDX_GUEST) += $(obj)/tdcall.o
vmlinux-objs-$(CONFIG_EFI_MIXED) += $(obj)/efi_thunk_$(BITS).o
efi-obj-$(CONFIG_EFI_STUB) = $(objtree)/drivers/firmware/efi/libstub/lib.a
diff --git a/arch/x86/boot/compressed/tdcall.S b/arch/x86/boot/compressed/tdcall.S
new file mode 100644
index 000000000000..aafadc136c88
--- /dev/null
+++ b/arch/x86/boot/compressed/tdcall.S
@@ -0,0 +1,3 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#include "../../kernel/tdcall.S"
diff --git a/arch/x86/boot/compressed/tdx.c b/arch/x86/boot/compressed/tdx.c
index 0a87c1775b67..cb20962c7da6 100644
--- a/arch/x86/boot/compressed/tdx.c
+++ b/arch/x86/boot/compressed/tdx.c
@@ -4,6 +4,8 @@
*/
#include <asm/tdx.h>
+#include <asm/vmx.h>
+#include <vdso/limits.h>
static int __ro_after_init tdx_guest = -1;
@@ -30,3 +32,29 @@ bool is_tdx_guest(void)
return !!tdx_guest;
}
+/*
+ * Helper function used for making hypercall for "out"
+ * instruction. It will be called from __out IO
+ * macro (in tdx.h).
+ */
+void tdg_out(int size, int port, unsigned int value)
+{
+ __tdx_hypercall(EXIT_REASON_IO_INSTRUCTION, size, 1,
+ port, value, NULL);
+}
+
+/*
+ * Helper function used for making hypercall for "in"
+ * instruction. It will be called from __in IO macro
+ * (in tdx.h). If IO is failed, it will return all 1s.
+ */
+unsigned int tdg_in(int size, int port)
+{
+ struct tdx_hypercall_output out = {0};
+ int err;
+
+ err = __tdx_hypercall(EXIT_REASON_IO_INSTRUCTION, size, 0,
+ port, 0, &out);
+
+ return err ? UINT_MAX : out.r11;
+}
diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h
index ef7a686a55a9..daa75c8eef5d 100644
--- a/arch/x86/include/asm/io.h
+++ b/arch/x86/include/asm/io.h
@@ -40,6 +40,7 @@
#include <linux/string.h>
#include <linux/compiler.h>
+#include <linux/protected_guest.h>
#include <asm/page.h>
#include <asm/early_ioremap.h>
#include <asm/pgtable_types.h>
@@ -309,7 +310,8 @@ static inline unsigned type in##bwl##_p(int port) \
\
static inline void outs##bwl(int port, const void *addr, unsigned long count) \
{ \
- if (sev_key_active()) { \
+ if (sev_key_active() || \
+ protected_guest_has(VM_UNROLL_STRING_IO)) { \
unsigned type *value = (unsigned type *)addr; \
while (count) { \
out##bwl(*value, port); \
@@ -325,7 +327,8 @@ static inline void outs##bwl(int port, const void *addr, unsigned long count) \
\
static inline void ins##bwl(int port, void *addr, unsigned long count) \
{ \
- if (sev_key_active()) { \
+ if (sev_key_active() || \
+ protected_guest_has(VM_UNROLL_STRING_IO)) { \
unsigned type *value = (unsigned type *)addr; \
while (count) { \
*value = in##bwl(port); \
diff --git a/arch/x86/include/asm/tdx.h b/arch/x86/include/asm/tdx.h
index e880a9dd40d3..6ba2dcea533f 100644
--- a/arch/x86/include/asm/tdx.h
+++ b/arch/x86/include/asm/tdx.h
@@ -5,6 +5,8 @@
#define TDX_CPUID_LEAF_ID 0x21
+#ifndef __ASSEMBLY__
+
#ifdef CONFIG_INTEL_TDX_GUEST
#include <asm/cpufeature.h>
@@ -74,6 +76,48 @@ u64 __tdx_hypercall(u64 fn, u64 r12, u64 r13, u64 r14, u64 r15,
bool tdx_protected_guest_has(unsigned long flag);
bool tdg_early_handle_ve(struct pt_regs *regs);
+void tdg_out(int size, int port, unsigned int value);
+unsigned int tdg_in(int size, int port);
+
+/* Helper function for converting {b,w,l} to byte size */
+static inline int tdx_get_iosize(char *str)
+{
+ if (str[0] == 'w')
+ return 2;
+ else if (str[0] == 'l')
+ return 4;
+
+ return 1;
+}
+
+/*
+ * To support I/O port access in decompressor or early kernel init
+ * code, since #VE exception handler cannot be used, use paravirt
+ * model to implement __in/__out macros which will in turn be used
+ * by in{b,w,l}()/out{b,w,l} I/O helper macros used in kernel. You
+ * can find the __in/__out macro usage in arch/x86/include/asm/io.h
+ */
+#ifdef BOOT_COMPRESSED_MISC_H
+#define __out(bwl, bw) \
+do { \
+ if (is_tdx_guest()) { \
+ tdg_out(tdx_get_iosize(#bwl), port, value); \
+ } else { \
+ asm volatile("out" #bwl " %" #bw "0, %w1" : : \
+ "a"(value), "Nd"(port)); \
+ } \
+} while (0)
+#define __in(bwl, bw) \
+do { \
+ if (is_tdx_guest()) { \
+ value = tdg_in(tdx_get_iosize(#bwl), port); \
+ } else { \
+ asm volatile("in" #bwl " %w1, %" #bw "0" : \
+ "=a"(value) : "Nd"(port)); \
+ } \
+} while (0)
+#endif
+
#else // !CONFIG_INTEL_TDX_GUEST
static inline bool is_tdx_guest(void)
@@ -161,6 +205,7 @@ static inline long tdx_kvm_hypercall4(unsigned int nr, unsigned long p1,
{
return -ENODEV;
}
-#endif /* CONFIG_INTEL_TDX_GUEST_KVM */
+#endif /* CONFIG_INTEL_TDX_GUEST_KVM */
+#endif /* __ASSEMBLY__ */
#endif /* _ASM_X86_TDX_H */
diff --git a/arch/x86/kernel/tdx.c b/arch/x86/kernel/tdx.c
index ca3442b7accf..4a84487ee8ff 100644
--- a/arch/x86/kernel/tdx.c
+++ b/arch/x86/kernel/tdx.c
@@ -202,6 +202,42 @@ static void tdg_handle_cpuid(struct pt_regs *regs)
regs->dx = out.r15;
}
+void tdg_out(int size, int port, unsigned int value)
+{
+ tdx_hypercall(EXIT_REASON_IO_INSTRUCTION, size, 1, port, value);
+}
+
+unsigned int tdg_in(int size, int port)
+{
+ struct tdx_hypercall_output out = {0};
+ u64 err;
+
+ err = __tdx_hypercall(EXIT_REASON_IO_INSTRUCTION, size, 0,
+ port, 0, &out);
+
+ return err ? UINT_MAX : out.r11;
+}
+
+static void tdg_handle_io(struct pt_regs *regs, u32 exit_qual)
+{
+ bool string = exit_qual & 16;
+ int out, size, port;
+
+ /* I/O strings ops are unrolled at build time. */
+ BUG_ON(string);
+
+ out = VE_GET_IO_TYPE(exit_qual);
+ size = VE_GET_IO_SIZE(exit_qual);
+ port = VE_GET_PORT_NUM(exit_qual);
+
+ if (out) {
+ tdg_out(size, port, regs->ax);
+ } else {
+ regs->ax &= ~GENMASK(8 * size, 0);
+ regs->ax |= tdg_in(size, port) & GENMASK(8 * size, 0);
+ }
+}
+
unsigned long tdg_get_ve_info(struct ve_info *ve)
{
u64 ret;
@@ -248,6 +284,9 @@ int tdg_handle_virtualization_exception(struct pt_regs *regs,
case EXIT_REASON_CPUID:
tdg_handle_cpuid(regs);
break;
+ case EXIT_REASON_IO_INSTRUCTION:
+ tdg_handle_io(regs, ve->exit_qual);
+ break;
default:
pr_warn("Unexpected #VE: %lld\n", ve->exit_reason);
return -EFAULT;
--
2.25.1
next prev parent reply other threads:[~2021-05-27 4:24 UTC|newest]
Thread overview: 381+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-26 18:01 [RFC v2 00/32] Add TDX Guest Support Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 01/32] x86/paravirt: Introduce CONFIG_PARAVIRT_XL Kuppuswamy Sathyanarayanan
2021-04-27 17:31 ` Borislav Petkov
2021-05-06 14:59 ` Kirill A. Shutemov
2021-05-10 8:07 ` Juergen Gross
2021-05-10 15:52 ` Andi Kleen
2021-05-10 15:56 ` Juergen Gross
2021-05-12 12:07 ` Kirill A. Shutemov
2021-05-12 13:18 ` Peter Zijlstra
2021-05-12 13:24 ` Andi Kleen
2021-05-12 13:51 ` Juergen Gross
2021-05-17 23:50 ` [RFC v2-fix 1/1] x86/paravirt: Move halt paravirt calls under CONFIG_PARAVIRT Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 02/32] x86/tdx: Introduce INTEL_TDX_GUEST config option Kuppuswamy Sathyanarayanan
2021-04-26 21:09 ` Randy Dunlap
2021-04-26 22:32 ` Kuppuswamy, Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 03/32] x86/cpufeatures: Add TDX Guest CPU feature Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 04/32] x86/x86: Add is_tdx_guest() interface Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 05/32] x86/tdx: Add __tdcall() and __tdvmcall() helper functions Kuppuswamy Sathyanarayanan
2021-04-26 20:32 ` Dave Hansen
2021-04-26 22:31 ` Kuppuswamy, Sathyanarayanan
2021-04-26 23:17 ` Dave Hansen
2021-04-27 2:29 ` Kuppuswamy, Sathyanarayanan
2021-04-27 14:29 ` Dave Hansen
2021-04-27 19:18 ` Kuppuswamy, Sathyanarayanan
2021-04-27 19:20 ` Dave Hansen
2021-04-28 17:42 ` [PATCH v1 1/1] x86/tdx: Add __tdx_module_call() and __tdx_hypercall() " Kuppuswamy Sathyanarayanan
2021-05-19 5:58 ` [RFC v2-fix-v1 " Kuppuswamy Sathyanarayanan
2021-05-19 6:04 ` Kuppuswamy, Sathyanarayanan
2021-05-19 15:31 ` Dave Hansen
2021-05-19 19:09 ` [RFC v2-fix-v2 " Kuppuswamy Sathyanarayanan
2021-05-19 19:13 ` [RFC v2-fix-v1 " Kuppuswamy, Sathyanarayanan
2021-05-19 20:09 ` Sean Christopherson
2021-05-19 20:49 ` Andi Kleen
2021-05-27 0:30 ` [RFC v2-fix-v2 " Kuppuswamy Sathyanarayanan
2021-05-27 15:25 ` Luck, Tony
2021-05-27 15:52 ` Kuppuswamy, Sathyanarayanan
2021-05-27 16:25 ` Luck, Tony
2021-04-26 18:01 ` [RFC v2 06/32] x86/tdx: Get TD execution environment information via TDINFO Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 07/32] x86/traps: Add do_general_protection() helper function Kuppuswamy Sathyanarayanan
2021-05-07 21:20 ` Dave Hansen
2021-04-26 18:01 ` [RFC v2 08/32] x86/traps: Add #VE support for TDX guest Kuppuswamy Sathyanarayanan
2021-05-07 21:36 ` Dave Hansen
2021-05-13 19:47 ` Andi Kleen
2021-05-13 20:07 ` Dave Hansen
2021-05-13 22:43 ` Andi Kleen
2021-05-13 20:14 ` Dave Hansen
2021-05-18 0:09 ` [RFC v2-fix 1/1] " Kuppuswamy Sathyanarayanan
2021-05-18 15:11 ` Dave Hansen
2021-05-18 15:45 ` Andi Kleen
2021-05-18 15:56 ` Dave Hansen
2021-05-18 16:00 ` Andi Kleen
2021-05-21 19:22 ` Dan Williams
2021-05-24 14:02 ` Andi Kleen
2021-05-27 0:29 ` [RFC v2-fix-v2 " Kuppuswamy Sathyanarayanan
2021-05-27 15:11 ` Luck, Tony
2021-05-27 16:24 ` Sean Christopherson
2021-05-27 16:36 ` Dave Hansen
2021-05-21 18:45 ` [RFC v2-fix " Kuppuswamy, Sathyanarayanan
2021-05-21 19:15 ` Dave Hansen
2021-05-21 19:57 ` Kuppuswamy, Sathyanarayanan
2021-06-08 17:02 ` [RFC v2 08/32] " Dave Hansen
2021-06-08 17:48 ` Sean Christopherson
2021-06-08 17:53 ` Dave Hansen
2021-06-08 18:12 ` Andi Kleen
2021-06-08 18:15 ` Dave Hansen
2021-06-08 18:17 ` Andy Lutomirski
2021-06-08 18:18 ` Andi Kleen
2021-04-26 18:01 ` [RFC v2 09/32] x86/tdx: Add HLT " Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 10/32] x86/tdx: Wire up KVM hypercalls Kuppuswamy Sathyanarayanan
2021-05-07 21:46 ` Dave Hansen
2021-05-08 0:59 ` Kuppuswamy, Sathyanarayanan
2021-05-12 13:00 ` Kirill A. Shutemov
2021-05-12 14:10 ` Kuppuswamy, Sathyanarayanan
2021-05-12 14:29 ` Dave Hansen
2021-05-13 19:29 ` Kuppuswamy, Sathyanarayanan
2021-05-13 19:33 ` Dave Hansen
2021-05-18 0:15 ` [RFC v2-fix 1/1] " Kuppuswamy Sathyanarayanan
2021-05-18 15:51 ` Dave Hansen
2021-05-18 16:23 ` Sean Christopherson
2021-05-18 20:12 ` Kuppuswamy, Sathyanarayanan
2021-05-18 20:19 ` Dave Hansen
2021-05-18 20:57 ` Kuppuswamy, Sathyanarayanan
2021-05-18 21:19 ` [RFC v2-fix-v2 " Kuppuswamy Sathyanarayanan
2021-05-18 23:29 ` Dave Hansen
2021-05-19 1:17 ` [RFC v2-fix-v3 " Kuppuswamy Sathyanarayanan
2021-05-19 1:20 ` Sathyanarayanan Kuppuswamy Natarajan
2021-04-26 18:01 ` [RFC v2 11/32] x86/tdx: Add MSR support for TDX guest Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 12/32] x86/tdx: Handle CPUID via #VE Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 13/32] x86/io: Allow to override inX() and outX() implementation Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 14/32] x86/tdx: Handle port I/O Kuppuswamy Sathyanarayanan
2021-05-10 21:57 ` Dan Williams
2021-05-10 23:08 ` Andi Kleen
2021-05-10 23:34 ` Dan Williams
2021-05-11 0:01 ` Andi Kleen
2021-05-11 0:21 ` Dan Williams
2021-05-11 0:30 ` Kuppuswamy, Sathyanarayanan
2021-05-11 1:07 ` Dan Williams
2021-05-11 2:29 ` Kuppuswamy, Sathyanarayanan
2021-05-11 14:39 ` Dave Hansen
2021-05-11 15:08 ` Kuppuswamy, Sathyanarayanan
2021-05-11 0:56 ` Kuppuswamy, Sathyanarayanan
2021-05-11 2:19 ` Andi Kleen
2021-05-11 15:35 ` Dave Hansen
2021-05-11 15:43 ` Dan Williams
2021-05-12 6:17 ` Dan Williams
2021-05-27 4:23 ` [RFC v2-fix-v1 0/3] " Kuppuswamy Sathyanarayanan
2021-05-27 4:23 ` [RFC v2-fix-v1 1/3] tdx: Introduce generic protected_guest abstraction Kuppuswamy Sathyanarayanan
2021-06-01 21:14 ` [RFC v2-fix-v2 1/1] x86: Introduce generic protected guest abstraction Kuppuswamy Sathyanarayanan
2021-06-02 17:20 ` Sean Christopherson
2021-06-02 18:15 ` Tom Lendacky
2021-06-02 18:25 ` Kuppuswamy, Sathyanarayanan
2021-06-02 18:29 ` Borislav Petkov
2021-06-02 18:32 ` Kuppuswamy, Sathyanarayanan
2021-06-02 18:39 ` Borislav Petkov
2021-06-02 18:45 ` Kuppuswamy, Sathyanarayanan
2021-06-02 18:19 ` Tom Lendacky
2021-06-02 18:29 ` Kuppuswamy, Sathyanarayanan
2021-06-02 18:30 ` Borislav Petkov
2021-06-03 18:14 ` Borislav Petkov
2021-06-03 18:15 ` [RFC v2-fix-v2 1/1] x86: Introduce generic protected guest abstractionn Borislav Petkov
2021-06-04 22:01 ` Tom Lendacky
2021-06-04 22:13 ` Kuppuswamy, Sathyanarayanan
2021-06-04 22:15 ` Borislav Petkov
2021-06-04 23:31 ` Tom Lendacky
2021-06-05 11:03 ` Borislav Petkov
2021-06-05 18:12 ` Kuppuswamy, Sathyanarayanan
2021-06-05 20:08 ` Borislav Petkov
2021-06-07 19:55 ` Kirill A. Shutemov
2021-06-07 20:14 ` Borislav Petkov
2021-06-07 22:26 ` Kuppuswamy, Sathyanarayanan
2021-06-08 21:30 ` [RFC v2-fix-v3 1/1] x86: Introduce generic protected guest abstraction Kuppuswamy Sathyanarayanan
2021-06-03 18:33 ` [RFC v2-fix-v2 " Kuppuswamy, Sathyanarayanan
2021-06-03 18:41 ` Borislav Petkov
2021-06-03 18:54 ` Kuppuswamy, Sathyanarayanan
2021-06-07 18:01 ` Kuppuswamy, Sathyanarayanan
2021-06-07 18:26 ` Borislav Petkov
2021-06-09 14:01 ` Kuppuswamy, Sathyanarayanan
2021-06-09 14:32 ` Borislav Petkov
2021-06-09 14:56 ` Kuppuswamy, Sathyanarayanan
2021-06-09 15:01 ` Borislav Petkov
2021-06-09 19:41 ` [RFC v2-fix-v4 " Kuppuswamy Sathyanarayanan
2021-06-09 22:53 ` Sathyanarayanan Kuppuswamy Natarajan
2021-05-27 4:23 ` [RFC v2-fix-v1 2/3] x86/tdx: Handle early IO operations Kuppuswamy Sathyanarayanan
2021-06-05 4:26 ` Williams, Dan J
2021-05-27 4:23 ` Kuppuswamy Sathyanarayanan [this message]
2021-06-05 18:52 ` [RFC v2-fix-v1 3/3] x86/tdx: Handle port I/O Dan Williams
2021-06-05 20:08 ` Kuppuswamy, Sathyanarayanan
2021-06-05 21:08 ` Dan Williams
2021-06-07 16:24 ` Kuppuswamy, Sathyanarayanan
2021-06-07 17:17 ` Dan Williams
2021-06-07 21:52 ` Kuppuswamy, Sathyanarayanan
2021-06-07 22:00 ` Dan Williams
2021-06-08 2:57 ` Andi Kleen
2021-06-08 15:40 ` [RFC v2-fix-v2 0/3] " Kuppuswamy Sathyanarayanan
2021-06-08 15:40 ` [RFC v2-fix-v2 1/3] x86/tdx: Handle port I/O in decompression code Kuppuswamy Sathyanarayanan
2021-06-08 23:12 ` Dan Williams
2021-06-08 15:40 ` [RFC v2-fix-v2 2/3] x86/tdx: Handle early IO operations Kuppuswamy Sathyanarayanan
2021-06-08 15:40 ` [RFC v2-fix-v2 3/3] x86/tdx: Handle port I/O Kuppuswamy Sathyanarayanan
2021-06-08 16:26 ` Dan Williams
2021-04-26 18:01 ` [RFC v2 15/32] x86/tdx: Handle in-kernel MMIO Kuppuswamy Sathyanarayanan
2021-05-07 21:52 ` Dave Hansen
2021-05-18 0:48 ` [RFC v2-fix 1/1] " Kuppuswamy Sathyanarayanan
2021-05-18 15:00 ` Dave Hansen
2021-05-18 15:56 ` Andi Kleen
2021-05-18 16:04 ` Dave Hansen
2021-05-18 16:10 ` Andi Kleen
2021-05-18 16:22 ` Dave Hansen
2021-05-18 17:05 ` Andi Kleen
2021-05-18 17:28 ` Andi Kleen
2021-05-18 17:11 ` Sean Christopherson
2021-05-18 17:21 ` Andi Kleen
2021-05-18 17:46 ` Dave Hansen
2021-05-18 18:36 ` Sean Christopherson
2021-05-18 20:20 ` Andi Kleen
2021-05-18 20:40 ` Dave Hansen
2021-05-18 21:05 ` Andi Kleen
2021-05-18 18:22 ` Sean Christopherson
2021-05-18 20:28 ` Andi Kleen
2021-05-18 20:37 ` Sean Christopherson
2021-05-18 20:56 ` Andi Kleen
2021-05-18 16:18 ` Sean Christopherson
2021-05-18 17:15 ` Andi Kleen
2021-05-18 18:17 ` Sean Christopherson
2021-05-20 22:47 ` Kirill A. Shutemov
2021-06-02 19:42 ` [RFC v2-fix-v2 0/2] " Kuppuswamy Sathyanarayanan
2021-06-02 19:42 ` [RFC v2-fix-v2 1/2] x86/sev-es: Abstract out MMIO instruction decoding Kuppuswamy Sathyanarayanan
2021-06-05 21:56 ` Dan Williams
2021-06-08 15:59 ` [RFC v2-fix-v3 0/4] x86/tdx: Handle in-kernel MMIO Kuppuswamy Sathyanarayanan
2021-06-08 15:59 ` [RFC v2-fix-v3 1/4] x86/insn-eval: Introduce insn_get_modrm_reg_ptr() Kuppuswamy Sathyanarayanan
2021-06-08 15:59 ` [RFC v2-fix-v3 2/4] x86/insn-eval: Introduce insn_decode_mmio() Kuppuswamy Sathyanarayanan
2021-06-08 15:59 ` [RFC v2-fix-v3 3/4] x86/sev-es: Use insn_decode_mmio() for MMIO implementation Kuppuswamy Sathyanarayanan
2021-06-08 15:59 ` [RFC v2-fix-v3 4/4] x86/tdx: Handle in-kernel MMIO Kuppuswamy Sathyanarayanan
2021-06-02 19:42 ` [RFC v2-fix-v2 2/2] " Kuppuswamy Sathyanarayanan
2021-06-02 21:01 ` Andi Kleen
2021-06-02 22:14 ` Kuppuswamy, Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 16/32] x86/tdx: Handle MWAIT, MONITOR and WBINVD Kuppuswamy Sathyanarayanan
2021-05-11 1:23 ` Dan Williams
2021-05-11 2:17 ` Andi Kleen
2021-05-11 2:44 ` Kuppuswamy, Sathyanarayanan
2021-05-11 2:51 ` Andi Kleen
2021-05-11 15:37 ` Dan Williams
2021-05-11 15:42 ` Andi Kleen
2021-05-11 15:44 ` Dave Hansen
2021-05-11 15:50 ` Dan Williams
2021-05-11 15:52 ` Andi Kleen
2021-05-11 16:04 ` Dave Hansen
2021-05-11 17:06 ` Andi Kleen
2021-05-11 17:42 ` Dave Hansen
2021-05-11 17:48 ` Andi Kleen
2021-05-24 23:32 ` [RFC v2-fix-v2 1/2] x86/tdx: Handle MWAIT and MONITOR Kuppuswamy Sathyanarayanan
2021-05-24 23:32 ` [RFC v2-fix-v2 2/2] x86/tdx: Ignore WBINVD instruction for TDX guest Kuppuswamy Sathyanarayanan
2021-05-24 23:39 ` Dan Williams
2021-05-25 0:29 ` Kuppuswamy, Sathyanarayanan
2021-05-25 0:50 ` Dan Williams
2021-05-25 0:54 ` Sean Christopherson
2021-05-25 1:02 ` Andi Kleen
2021-05-25 1:45 ` Dan Williams
2021-05-25 2:13 ` Andi Kleen
2021-05-25 2:49 ` Dan Williams
2021-05-25 3:27 ` Andi Kleen
2021-05-25 3:40 ` Dan Williams
2021-05-26 1:09 ` Andi Kleen
2021-05-27 4:38 ` [RFC v2-fix-v3 1/1] " Kuppuswamy Sathyanarayanan
2021-06-05 3:35 ` Dan Williams
2021-06-08 21:35 ` [RFC v2-fix-v3 1/1] x86/tdx: Skip " Kuppuswamy Sathyanarayanan
2021-06-08 21:41 ` Dan Williams
2021-06-08 22:17 ` Dave Hansen
2021-06-08 22:34 ` Andi Kleen
2021-06-08 22:36 ` Kuppuswamy, Sathyanarayanan
2021-06-08 22:53 ` Dave Hansen
2021-06-08 23:04 ` Andi Kleen
2021-06-08 23:04 ` Kuppuswamy, Sathyanarayanan
2021-06-08 23:32 ` Dan Williams
2021-06-08 23:38 ` Dave Hansen
2021-06-09 0:07 ` Dan Williams
2021-06-09 0:14 ` Kuppuswamy, Sathyanarayanan
2021-06-09 1:10 ` [RFC v2-fix-v4 " Kuppuswamy Sathyanarayanan
2021-06-09 3:40 ` Dan Williams
2021-06-09 3:56 ` Kuppuswamy, Sathyanarayanan
2021-06-09 4:19 ` Dan Williams
2021-06-09 4:27 ` Andi Kleen
2021-06-09 15:09 ` Dan Williams
2021-06-09 16:12 ` Andy Lutomirski
2021-06-09 17:28 ` Kuppuswamy, Sathyanarayanan
2021-06-09 17:31 ` Dan Williams
2021-06-09 18:24 ` Kuppuswamy, Sathyanarayanan
2021-06-09 19:49 ` [RFC v2-fix-v5 1/1] x86: Skip WBINVD instruction for VM guest Kuppuswamy Sathyanarayanan
2021-06-09 19:56 ` Dan Williams
2021-06-09 21:03 ` Dave Hansen
2021-06-09 21:38 ` Dan Williams
2021-06-09 21:42 ` Kuppuswamy, Sathyanarayanan
2021-06-09 23:55 ` Dave Hansen
2021-06-09 4:02 ` [RFC v2-fix-v4 1/1] x86/tdx: Skip WBINVD instruction for TDX guest Andy Lutomirski
2021-06-09 4:21 ` Dan Williams
2021-06-09 4:25 ` Andi Kleen
2021-06-09 4:32 ` Andy Lutomirski
2021-06-09 4:40 ` Andi Kleen
2021-06-09 4:54 ` Kuppuswamy, Sathyanarayanan
2021-06-09 14:12 ` Dave Hansen
2021-05-25 4:32 ` [RFC v2-fix-v2 2/2] x86/tdx: Ignore " Dave Hansen
2021-05-25 0:36 ` Andi Kleen
2021-05-24 23:42 ` Dave Hansen
2021-05-25 0:39 ` Andi Kleen
2021-05-25 0:53 ` Dan Williams
2021-05-25 2:26 ` [RFC v2-fix-v2 1/2] x86/tdx: Handle MWAIT and MONITOR Dan Williams
2021-05-11 14:08 ` [RFC v2 16/32] x86/tdx: Handle MWAIT, MONITOR and WBINVD Dave Hansen
2021-05-11 16:09 ` Sean Christopherson
2021-05-11 16:16 ` Dave Hansen
2021-05-11 15:53 ` Dave Hansen
2021-04-26 18:01 ` [RFC v2 17/32] ACPICA: ACPI 6.4: MADT: add Multiprocessor Wakeup Structure Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 18/32] ACPICA: ACPI 6.4: MADT: add Multiprocessor Wakeup Mailbox Structure Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 19/32] ACPI/table: Print MADT Wake table information Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 20/32] x86/acpi, x86/boot: Add multiprocessor wake-up support Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 21/32] x86/boot: Add a trampoline for APs booting in 64-bit mode Kuppuswamy Sathyanarayanan
2021-05-13 2:56 ` Dan Williams
2021-05-18 0:54 ` [RFC v2-fix 1/1] " Kuppuswamy Sathyanarayanan
2021-05-18 2:06 ` Dan Williams
2021-05-18 2:53 ` Kuppuswamy, Sathyanarayanan
2021-05-18 4:08 ` Dan Williams
2021-05-20 0:18 ` Kuppuswamy, Sathyanarayanan
2021-05-20 0:40 ` Dan Williams
2021-05-20 0:42 ` Kuppuswamy, Sathyanarayanan
2021-05-21 14:39 ` [RFC v2-fix-v2 " Kuppuswamy Sathyanarayanan
2021-05-21 18:29 ` Dan Williams
2021-04-26 18:01 ` [RFC v2 22/32] x86/boot: Avoid #VE during compressed boot for TDX platforms Kuppuswamy Sathyanarayanan
2021-05-13 3:03 ` Dan Williams
2021-04-26 18:01 ` [RFC v2 23/32] x86/boot: Avoid unnecessary #VE during boot process Kuppuswamy Sathyanarayanan
2021-05-13 3:23 ` Dan Williams
2021-05-18 0:59 ` [WARNING: UNSCANNABLE EXTRACTION FAILED][WARNING: UNSCANNABLE EXTRACTION FAILED][RFC v2-fix 1/1] x86/boot: Avoid #VE during boot for TDX platforms Kuppuswamy Sathyanarayanan
2021-05-19 16:53 ` [RFC " Dave Hansen
2021-05-21 14:35 ` [RFC v2-fix-v2 " Kuppuswamy Sathyanarayanan
2021-05-21 16:11 ` Dave Hansen
2021-05-21 18:18 ` Sean Christopherson
2021-05-21 18:30 ` Dave Hansen
2021-05-21 18:32 ` Kuppuswamy, Sathyanarayanan
2021-05-24 23:27 ` [RFC v2-fix-v3 " Kuppuswamy Sathyanarayanan
2021-05-27 21:25 ` [RFC v2-fix-v4 " Kuppuswamy Sathyanarayanan
2021-06-08 23:14 ` Dan Williams
2021-05-21 18:31 ` [RFC v2-fix-v2 " Kuppuswamy, Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 24/32] x86/topology: Disable CPU online/offline control for TDX guest Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 25/32] x86/tdx: Forcefully disable legacy PIC for TDX guests Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 26/32] x86/mm: Move force_dma_unencrypted() to common code Kuppuswamy Sathyanarayanan
2021-05-07 21:54 ` Dave Hansen
2021-05-10 22:19 ` Kuppuswamy, Sathyanarayanan
2021-05-10 22:23 ` Dave Hansen
2021-05-12 13:08 ` Kirill A. Shutemov
2021-05-12 15:44 ` Dave Hansen
2021-05-12 15:53 ` Sean Christopherson
2021-05-13 16:40 ` Kuppuswamy, Sathyanarayanan
2021-05-13 17:49 ` Dave Hansen
2021-05-13 18:17 ` Kuppuswamy, Sathyanarayanan
2021-05-13 19:38 ` Andi Kleen
2021-05-13 19:42 ` Dave Hansen
2021-05-17 18:16 ` Sean Christopherson
2021-05-17 18:27 ` Kuppuswamy, Sathyanarayanan
2021-05-17 18:33 ` Dave Hansen
2021-05-17 18:37 ` Sean Christopherson
2021-05-17 22:32 ` Kuppuswamy, Sathyanarayanan
2021-05-17 23:11 ` Andi Kleen
2021-05-18 1:28 ` Kuppuswamy, Sathyanarayanan
2021-05-27 4:46 ` Kuppuswamy, Sathyanarayanan
2021-05-27 4:47 ` [RFC v2-fix-v1 1/1] " Kuppuswamy Sathyanarayanan
2021-06-01 2:10 ` [RFC v2-fix-v2 " Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 27/32] x86/tdx: Exclude Shared bit from __PHYSICAL_MASK Kuppuswamy Sathyanarayanan
2021-05-19 5:00 ` Kuppuswamy, Sathyanarayanan
2021-05-19 16:14 ` Dave Hansen
2021-05-20 18:48 ` Kuppuswamy, Sathyanarayanan
2021-05-20 18:56 ` Kuppuswamy, Sathyanarayanan
2021-05-20 19:33 ` Sean Christopherson
2021-05-20 19:42 ` Kuppuswamy, Sathyanarayanan
2021-05-20 20:16 ` Sean Christopherson
2021-05-20 20:31 ` Andi Kleen
2021-05-20 21:18 ` Sean Christopherson
2021-05-20 21:23 ` Dave Hansen
2021-05-20 21:28 ` Kuppuswamy, Sathyanarayanan
2021-05-20 23:25 ` Andi Kleen
2021-05-20 20:56 ` Dave Hansen
2021-05-31 21:46 ` Kirill A. Shutemov
2021-06-01 2:08 ` [RFC v2-fix-v1 1/1] x86/tdx: Exclude Shared bit from physical_mask Kuppuswamy Sathyanarayanan
2021-05-20 20:30 ` [RFC v2 27/32] x86/tdx: Exclude Shared bit from __PHYSICAL_MASK Dave Hansen
2021-04-26 18:01 ` [RFC v2 28/32] x86/tdx: Make pages shared in ioremap() Kuppuswamy Sathyanarayanan
2021-05-07 21:55 ` Dave Hansen
2021-05-07 22:38 ` Andi Kleen
2021-05-10 22:23 ` Kuppuswamy, Sathyanarayanan
2021-05-10 22:30 ` Dave Hansen
2021-05-10 22:52 ` Sean Christopherson
2021-05-11 9:35 ` Borislav Petkov
2021-05-20 20:12 ` Kuppuswamy, Sathyanarayanan
2021-05-21 15:18 ` Borislav Petkov
2021-05-21 16:19 ` Tom Lendacky
2021-05-21 18:49 ` Borislav Petkov
2021-05-21 21:14 ` Tom Lendacky
2021-05-25 18:21 ` Kuppuswamy, Sathyanarayanan
2021-05-31 15:13 ` Borislav Petkov
2021-05-31 17:32 ` Kuppuswamy, Sathyanarayanan
2021-05-31 17:55 ` Borislav Petkov
2021-05-31 18:45 ` Kuppuswamy, Sathyanarayanan
2021-05-31 19:14 ` Borislav Petkov
2021-06-01 2:07 ` [RFC v2-fix-v1 1/1] " Kuppuswamy Sathyanarayanan
2021-06-01 21:16 ` [RFC v2 28/32] " Kuppuswamy, Sathyanarayanan
2021-05-26 21:37 ` Kuppuswamy, Sathyanarayanan
2021-05-26 22:02 ` Tom Lendacky
2021-05-26 22:14 ` Tom Lendacky
2021-05-26 22:20 ` Kuppuswamy, Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 29/32] x86/tdx: Add helper to do MapGPA TDVMALL Kuppuswamy Sathyanarayanan
2021-05-19 15:59 ` Dave Hansen
2021-05-20 23:14 ` Kuppuswamy, Sathyanarayanan
2021-05-27 4:56 ` [RFC v2-fix-v1 1/1] x86/tdx: Add helper to do MapGPA hypercall Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 30/32] x86/tdx: Make DMA pages shared Kuppuswamy Sathyanarayanan
2021-05-18 1:19 ` [RFC v2-fix 1/1] " Kuppuswamy Sathyanarayanan
2021-05-18 19:55 ` Sean Christopherson
2021-05-18 22:12 ` Kuppuswamy, Sathyanarayanan
2021-05-18 22:31 ` Dave Hansen
2021-06-01 2:06 ` [RFC v2-fix-v2 " Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 31/32] x86/kvm: Use bounce buffers for TD guest Kuppuswamy Sathyanarayanan
2021-06-01 2:03 ` [RFC v2-fix-v1 1/1] " Kuppuswamy Sathyanarayanan
2021-04-26 18:01 ` [RFC v2 32/32] x86/tdx: ioapic: Add shared bit for IOAPIC base address Kuppuswamy Sathyanarayanan
2021-05-07 23:06 ` Dave Hansen
2021-05-24 23:29 ` [RFC v2-fix-v2 1/1] " Kuppuswamy Sathyanarayanan
2021-06-01 1:28 ` [RFC v2-fix-v3 " Kuppuswamy Sathyanarayanan
2021-05-03 23:21 ` [RFC v2 00/32] Add TDX Guest Support Kuppuswamy, Sathyanarayanan
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