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| author | Kai Huang <kai.huang@intel.com> | 2023-08-15 23:02:03 +1200 |
|---|---|---|
| committer | Dave Hansen <dave.hansen@linux.intel.com> | 2023-09-12 16:30:14 -0700 |
| commit | 8a8544bde858e5d62d79df6baaa387e0b6587dc7 (patch) | |
| tree | 5d92a4096a19646c64cfd323f991f597c08a970b /arch/x86/hyperv | |
| parent | 90f5ecd37faed9a59eb2788a56dac8deeee0a508 (diff) | |
| download | linux-stable-8a8544bde858e5d62d79df6baaa387e0b6587dc7.tar.gz linux-stable-8a8544bde858e5d62d79df6baaa387e0b6587dc7.tar.bz2 linux-stable-8a8544bde858e5d62d79df6baaa387e0b6587dc7.zip | |
x86/tdx: Remove 'struct tdx_hypercall_args'
Now 'struct tdx_hypercall_args' is basically 'struct tdx_module_args'
minus RCX. Although from __tdx_hypercall()'s perspective RCX isn't
used as shared register thus not part of input/output registers, it's
not worth to have a separate structure just due to one register.
Remove the 'struct tdx_hypercall_args' and use 'struct tdx_module_args'
instead in __tdx_hypercall() related code. This also saves the memory
copy between the two structures within __tdx_hypercall().
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Kai Huang <kai.huang@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/all/798dad5ce24e9d745cf0e16825b75ccc433ad065.1692096753.git.kai.huang%40intel.com
Diffstat (limited to 'arch/x86/hyperv')
| -rw-r--r-- | arch/x86/hyperv/ivm.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/hyperv/ivm.c b/arch/x86/hyperv/ivm.c index e48983550743..c1088d3661d5 100644 --- a/arch/x86/hyperv/ivm.c +++ b/arch/x86/hyperv/ivm.c @@ -384,7 +384,7 @@ static inline void hv_ghcb_msr_read(u64 msr, u64 *value) {} #ifdef CONFIG_INTEL_TDX_GUEST static void hv_tdx_msr_write(u64 msr, u64 val) { - struct tdx_hypercall_args args = { + struct tdx_module_args args = { .r10 = TDX_HYPERCALL_STANDARD, .r11 = EXIT_REASON_MSR_WRITE, .r12 = msr, @@ -398,7 +398,7 @@ static void hv_tdx_msr_write(u64 msr, u64 val) static void hv_tdx_msr_read(u64 msr, u64 *val) { - struct tdx_hypercall_args args = { + struct tdx_module_args args = { .r10 = TDX_HYPERCALL_STANDARD, .r11 = EXIT_REASON_MSR_READ, .r12 = msr, @@ -414,7 +414,7 @@ static void hv_tdx_msr_read(u64 msr, u64 *val) u64 hv_tdx_hypercall(u64 control, u64 param1, u64 param2) { - struct tdx_hypercall_args args = { }; + struct tdx_module_args args = { }; args.r10 = control; args.rdx = param1; |