From: Peter Zijlstra <peterz@infradead.org>
To: "Thomas Hellström (VMware)" <thomas_os@shipmail.org>
Cc: linux-kernel@vger.kernel.org, pv-drivers@vmware.com,
Thomas Hellstrom <thellstrom@vmware.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"H. Peter Anvin" <hpa@zytor.com>,
x86@kernel.org, Doug Covelli <dcovelli@vmware.com>
Subject: Re: [PATCH 2/4] x86/vmware: Add a header file for hypercall definitions
Date: Tue, 20 Aug 2019 13:32:03 +0200 [thread overview]
Message-ID: <20190820113203.GM2332@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20190818143316.4906-3-thomas_os@shipmail.org>
On Sun, Aug 18, 2019 at 04:33:14PM +0200, Thomas Hellström (VMware) wrote:
> +#define VMWARE_HYPERCALL \
> + ALTERNATIVE_2(".byte 0xed", \
> + ".byte 0x0f, 0x01, 0xc1", X86_FEATURE_VMW_VMCALL, \
> + ".byte 0x0f, 0x01, 0xd9", X86_FEATURE_VMW_VMMCALL)
For sanity, could we either add comments, or macros for those
instrucions?
Something like:
#define INSN_INL 0xed
#define INSN_VMCALL 0x0f,0x01,0xc1
#define INSN_VMMCALL 0x0f,0x01,0xd9
#define VMWARE_HYPERCALL \
ALTERNATIVE_2(_ASM_MK_NOP(INSN_INL),
_ASM_MK_NOP(INSN_VMCALL), X86_FEATURE_VMCALL,
_ASM_MK_NOP(INSN_VMMCALL), X86_FEATURE_VMMCALL)
With possibly a patch that does 's/_ASM_MK_NOP/_ASM_MK_INSN/' on
arch/x86/ for further sanity :-)
next prev parent reply other threads:[~2019-08-20 11:32 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-18 14:33 [PATCH 0/4] Add support for updated vmware hypercall instruction Thomas Hellström (VMware)
2019-08-18 14:33 ` [PATCH 1/4] x86/vmware: Update platform detection code for VMCALL/VMMCALL hypercalls Thomas Hellström (VMware)
2019-08-18 19:20 ` Thomas Gleixner
2019-08-18 19:46 ` Thomas Hellström (VMware)
2019-08-20 17:18 ` [Pv-drivers] " Darren Hart
2019-08-18 14:33 ` [PATCH 2/4] x86/vmware: Add a header file for hypercall definitions Thomas Hellström (VMware)
2019-08-18 20:19 ` Borislav Petkov
2019-08-18 20:39 ` Borislav Petkov
2019-08-18 22:28 ` Thomas Hellström (VMware)
2019-08-19 6:25 ` Borislav Petkov
2019-08-19 7:49 ` Thomas Hellström (VMware)
2019-08-20 11:32 ` Peter Zijlstra [this message]
2019-08-20 13:34 ` Thomas Hellström (VMware)
2019-08-20 13:42 ` Thomas Gleixner
2019-08-20 19:19 ` Thomas Hellström (VMware)
2019-08-20 19:23 ` Thomas Gleixner
2019-08-18 14:33 ` [PATCH 3/4] drm/vmwgfx: Update the backdoor call with support for new instructions Thomas Hellström (VMware)
2019-08-18 14:33 ` [PATCH 4/4] input/vmmouse: " Thomas Hellström (VMware)
2019-08-21 5:09 ` Dmitry Torokhov
2019-08-21 15:48 ` Thomas Hellström (VMware)
2019-08-21 16:03 ` Dmitry Torokhov
2019-08-18 18:09 ` [PATCH 0/4] Add support for updated vmware hypercall instruction Borislav Petkov
2019-08-18 19:02 ` Thomas Hellström (VMware)
2019-08-18 19:37 ` Borislav Petkov
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